School of Electronic and Communications Engineering

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Journal and Conference Publications:



Journal Publications

    2012
  1. Wang, P., Murugan, G.S., Lee, T., Ding, M., Brambilla, G., Semenova, Y., Wu, Q., Koizumi, F. and Farrell, G.: "High-Q bismuth silicate nonlinear glass microsphere resonators", Accepted for publication, IEEE Photonics Journal, May 2012
  2. Rajan, G., Ramakrishnan, M., Lesiak, P., Semenova, Y., Domanski, A., Wolinski, T., Boczkowska, A. and Farrell, G.: "Composite materials with embedded photonic crystal fiber interferometric sensors", Accepted for publication, Sensors & Actuators: A. Physical, May 2012
  3. Wang, P., Murugan, G.S., Brambilla, G., Ding, M., Semenova, Y., Wu, Q. and Farrell, G.: "Chalcogenide microsphere fabricated from fibre tapers using contact with a high temperature ceramic surface", Accepted for publication, Photonics Technology Letters, March 2012
  4. Wang, P., Ding, M., Brambilla, G., Semenova, Y., Wu, Q. and Farrell, G.: "High temperature performance of an optical microfibre coupler and its potential use as a sensor", Accepted for publication, Electronics Letter, February 2012
  5. Wu, Y., Ma, Y., Yuan, J., Semenova, Y., Wang, P., Yu, C. and Farrell, G.: "Evanescent field coupling between two parallel close contact SMS fiber structures", Accepted for publication, Optics Express, January 2012
  6. Wang, P., Lee, T., Ding, M., Dhar, A., Hawkins, T., Foy, P., Semenova, Y., Wu, Q., Sahu, J., Farrell, G., Ballato, J., and Brambilla. G.: "A germanium microsphere high-Q resonator", Accepted for publication, Optics Letters, January 2012
  7. Rajan, G., Callaghan, D., Semenova, Y., and Farrell, G.: "Photonic Crystal Fiber Sensors for Minimally Invasive Surgical Devices", IEEE Transactions on Biomedical Engineering, Vol. 59, No. 2, February 2012, pp 332-338
  8. Mathew, J., Semenova, Y. and Farrell, G.: "A fiber bend based humidity sensor with a wide linear range and fast measurement speed", Sensors & Actuators: A. Physical, Vol. 174, February 2012, pp 47-51

    2011
  9. Wu, Q., Semenova, Y., Ma, Y., Wang, P., Guo, T., Jin, L. and Farrell, G.: "Light Coupling Between a Singlemode-Multimode-Singlemode (SMS) Fiber Structure and a Long Period Fiber Grating", Journal of Lightwave Technology, Vol. 29, No. 24, 15th December 2011, pp 3683-3688
  10. Mathew, J., Semenova, Y. and Farrell, G.: "Relative humidity sensor based on an Agarose infiltrated photonic crystal fiber interferometer", Journal of Selected Topics in Quantum Electronics, Accepted December 2011, preprint online
  11. Wu, Q., Semenova, Y., Wang, P. and Farrell, G.: "Numerical investigation on a laser based localised joining with a glass frit intermediate layer", Accepted for publication in the Journal of Microsystem Technologies, November 2011
  12. Wu, Q., Semenova, Y., Wang, P. and Farrell, G: "A comprehensive analysis verified by experiment of a refractometer based on an SMF28- Small-Core Singlemode fiber (SCSMF) -SMF28 fiber structure", Journal of Optics, Vol. 13, No. 12, November 2011
  13. Rajan, G., Ramakrishnan, M., Semenova, Y., Domanski, A., Boczkowska, A., Wolinski, T. and Farrell, G.: "Analysis of Vibration Measurements in a Composite Material Using an Embedded PM-PCF Polarimetric Sensor and an FBG Sensor", IEEE Sensors Journal, Accepted October 2011, preprint online
  14. Ramakrishnan, M., Rajan, G., Semenova, Y., Lesiak, P., Domanski, A., Wolinski, T., Boczkowska, A. and Farrell, G.: "The influence of thermal expansion of a composite material on embedded polarimetric sensors", Smart Materials and Structures, Vol 20, No. 12, 4th November 2011
  15. Wang, P., Brambilla, G., Ding, M., Semenova, Y., Wu, Q. and Farrell, G.: "The use of a fibre comb filter fabricated by a CO2 laser irradiation to improve the resolution of a ratiometric wavelength measurement system", IEEE Journal of Lightwave Technology, Accepted September 2011, preprint online
  16. Mathew, J., Semenova, Y. and Farrell, G.: "Photonic crystal fiber interferometer for dew detection", IEEE Journal of Lightwave Technology, Accepted September 2011, preprint online
  17. Callaghan, D. Rajan, G., McGrath, M., Coyle, E., Semenova, Y. and Farrell, G.: "Investigation and experimental measurement of scissor blade cutting forces using fiber Bragg grating sensors" Smart Materials and Structures, Vol 20, No. 10, 23rd Aug 2011
  18. Mathews, S., Farrell, G. and Semenova, Y.: "Experimental study on the frequency dependence of the liquid crystal infiltrated photonic crystal fibers", IEEE Sensors Journal, Accepted July 2011, preprint online
  19. Belkin, M.E., Loparev, A.V., Semenova, Y., Farrell, G. and Sigov, A.S.: "A Tunable RF-Band Optoelectronic Oscillator and OE-CAD Model for its Simulation", Microwave and Optical Technology Letters, Vol. 53, No. 11, November 2011, pp 24742477
  20. Wang, P., Ding, M., Semenova, Y., Wu, Q., Brambilla, G. and Farrell, G.: "A high sensitivity, evanescent field refractometric sensor based on tapered multimode fiber interference", Optics Letters, Vol. 36, No. 12, 2011, pp 2233-2235
  21. Wu, Q., Semenova, Y., Wang, P. and Farrell, G.: "Fiber heterostructure for simultaneous strain and temperature measurement", Electronics Letters, Vol. 47, No. 12, 9th June 2011
  22. Wu, Q., Semenova, Y., Yan, B., Ma, Y., Wang, P. Yu, C.and Farrell, G.: "Fiber refractometer based on an FBG and SMS fiber structure", Optics Letters, Vol. 36, No. 12, June 15th, 2011, pp 2197-2199
  23. Wu, Q., Semenova, Y., Hatta, A., Wang, P. and Farrell, G.: "Singlemode-Multimode-Singlemode fiber structures for simultaneous measurement of strain and temperature", Microwave and Optical Technology Letters, Vol. 53, No. 11, November 2011, pp 24742477
  24. Wang, P., Murugan, G.S., Lee, T., Feng, X., Semenova, Y., Wu, Q., Loh, W., Brambilla, G., Wilkinson, J.S. and Farrell, G.: Lead silicate glass microsphere resonators with absorption-limited Q", Applied Physics Letters, Vol. 98, No. 18, May 2011
  25. Wu, Q., Semenova, Y., Mathew, J., Wang, P. and Farrell, G.: "Humidity sensor based on a singlemode hetero-core fiber structure", Optics Letters, Vol. 36, No 10, 2011, pp 1752-1754
  26. Wang, P., Brambilla, G., Semenova, Y., Wu, Q. and Farrell, G.: "A simple ultrasensitive displacement sensor based on a high bend loss singlemode fibre and a ratiometric measurement system" Journal of Optics, Vol. 13, No. 7, March 2011
  27. Mathew, J., Semenova, Y., Rajan, G., Wang, P. and Farrell, G.: "Improving the sensitivity of a humidity sensor based on fiber bend coated with a hygroscopic coating" Journal of Optics and Laser Technology, Vol. 43, No. 7, October 2011, pp 1301-1305
  28. Mathews, S., Farrell, G. and Semenova, Y.: "Liquid crystal infiltrated photonic crystal fibers for electric field intensity measurements", Applied Optics, Vol. 50, No 17, 2011, pp 2628-2635
  29. Wu, Q., Semenova, Y., Wang, P. and Farrell, G.: "High sensitivity SMS fiber structure based refractometer - analysis and experiment", Optics Express, Vol. 19, No. 9, 2011, pp7937-7944
  30. Wang, P., Brambilla, G., Ding, M., Semenova, Y., Wu, Q. and Farrell, G.: "Investigation of singlemode-multimode-singlemode and singlemode-tapered multimode-singlemode fibre structures and their application for refractive index sensing", Journal of the Optical Society of America B (JOSA B), Vol. 28 No.5, 2011, pp 1180-1186
  31. Rajan, G., Ramakrishnan, M., Semenova, Y., Milenko, K., Lesiak, P., Domanski, A., Wolinski, T. and Farrell, G.: "A Photonic Crystal Fiber and Fiber Bragg Grating Based Hybrid Fiber Optic Sensor System", IEEE Sensors Journal, Vol. 12, No. 1, January 2012
  32. Mathews, S., Farrell, G. and Semenova, Y.: "Directional electric field sensitivity of a liquid crystal infiltrated photonic crystal fiber", Photonics Technology Letters, Vol. 23, No. 7, April 1st 2011, pp 408-410
  33. Mathews, S., Farrell, G. and Semenova, Y.: "All-fiber polarimetric electric field sensing using liquid crystal infiltrated photonic crystal fibers", Sensors & Actuators: A. Physical, Volume 167, No. 1, May 2011, pp 5459

    2010
  34. Wang, P., Semenova, Y., Zheng, J., Wu. Q., Hatta, A. and Farrell, G.: "Numerical study of an ion-exchanged glass waveguide using both two-dimensional and three-dimensional models", Optics and Laser Technology, Vol. 43, No. 4, pp 882-888
  35. Rajan, G., Mathews, S., Farrell, G. and Semenova, Y.: "A Liquid Crystal Coated Tapered Photonic Crystal Fiber Interferometer", Journal of Optics A, Vol 13, No. 21, December 2010, 7 pp
  36. Wu, Q., Hatta, A., Wang, P., Semenova, Y. and Farrell, G.: "Use of a bent single SMS fiber structure for simultaneous measurement of displacement and temperature sensing", Photonics Technology Letters, Vol. 23, No. 2, pp 130-132
  37. Mathews, S., Farrell, G. and Semenova, Y.: "Experimental Demonstration of an All-Fiber Variable Optical Attenuator based on Liquid Crystal Infiltrated Photonic Crystal Fiber", Microwave and Optical Technology Letters, Vol. 53, No. 3, pp 539-543
  38. Wang, P., Semenova, Y., Zheng, J., Wu, Q., Hatta, A. and Farrell, G.: "Proposal for a Simple Integrated Optical Ion Exchange Waveguide Polarizer with a Liquid Crystal Overlay", Optics Communications, Vol. 284, No. 4, pp 979-984
  39. Lesiak, P., Rajan, G., Semenova, Y., Farrell, G., Boczkowska, A., Domanski, A. and Wolinski, T.: "A hybrid highly birefringent fiber optic sensing system for simultaneous strain and temperature measurement", Photonics Letters of Poland, Vol. 2, No. 3, Oct 2010, pp. 140-142
  40. Sun, A., Semenova, Y., Wu., Q., Hatta, A. and Farrell, G.:"A Novel High Sensitive Optical Fiber Microphone Based on a Singlemode-Multimode-Singlemode Structure", Microwave and Optical Technology Letters, Vol. 53, No. 2, pp 442-445
  41. Wu, Q., Semenova, Y., Ginu, R., Wang, P. and Farrell, G.: "A study of the effect of source signal bandwidth on ratiometric wavelength measurement", Applied Optics, Vol. 49, Issue 29, pp 5626-5631
  42. Mathew, J., Semenova, Y., Rajan, G. and Farrell, G.: "Humidity Sensor Based on a Photonic Crystal Fiber Interferometer", Electronics Letters, Vol. 46, No. 19, September 2010, pp 1341-1343
  43. Rajan, G., Semenova, Y., Mathew, J. and Farrell, G.: "Experimental analysis and demonstration of a low cost fibre optic temperature sensor system for engineering applications", Sensors & Actuators: A. Physical, No. 163, 2010, pp 88-95
  44. Wu, Q., Semenova, Y., Hatta, A., Wang, P. and Farrell, G.: "Bent SMS fiber structure for temperature measurement", Electronics Letters, Vol. 46, No. 16, August 2010, pp 1129-1130
  45. Sun, A., Semenova, Y., Wu., Q. and Farrell, G.: "Simple optic fibre microphone based on hetero-core spliced fibre structure", Electronics Letters, Vol. 46, No. 12, June 2010, pp. 853-854
  46. Wang, P., Semenova, Y., Li, Y., Wu, Q. and Farrell, G.: "A macrobending singlemode fiber refractive index sensor for low refractive index liquids", Photonics Letters of Poland, Vol. 2, No. 2, June 2010, pp. 67-69
  47. Wang, P., Semenova, Y., Wu, Q. and Farrell, G.: "A bend loss based singlemode fiber micro-displacement sensor", Microwave and Optical Technology Letters, Vol. 52, No. 10, October 2010, pp. 2231-2235
  48. Rajan, G., Callaghan, D., Semenova, Y., McGrath, M., Coyle, E. and Farrell, G.: "A fiber Bragg grating based all-fiber sensing system for telerobotic cutting applications", IEEE Sensors Journal, Vol. 10, No. 12, December 2010, pp. 1913-1920
  49. Wu, Q., Wang, P., Semenova, A. and Farrell, G.: "A study of the effect of the position of an edge filter within a ratiometric wavelength measurement system", Measurement Science and Technology, No. 21, No. 9, 28th July 2010, 5 pp
  50. Rajan, G., Milenko, K., Lesiak, P., Semenova, Y., Boczkowska, A., Ramakrishnan, M., Jedrzejewski, K., Domanski, A., Wolinski, T. and Farrell, G.: "A hybrid fiber optic sensing system for simultaneous strain and temperature measurement and its applications", Photonics Letters of Poland, Vol. 2, No. 1, March 2010, pp. 46-48
  51. Hatta, A., Semenova, Y., Rajan, G. and Farrell, G.: "A voltage sensor based on a Singlemode-Multimode-Singlemode fiber structure", Microwave and Optical Technology Letters, Vol. 52, No. 8, August 2010, pp 1887-1890
  52. Sun, A., Semenova, Y., Farrell, G., Chen, B., Li, G. and Lin, Z.: "BOTDR integrated with a FBG sensing system for distributed strain measurement", Electronics Letters, Vol. 46, No. 1, 7th January 2010, pp 66-68
  53. Sun, A., Semenova, Y., Farrell, G., Byrne, R. and Finlay, H.: "Low cost disposable reflective optical fiber microphone", Microwave and Optical Technology Letters, Vol. 52, No. 7, July 2010, pp 1504-1507
  54. Wang, P., Semenova, Y., Wu, Q., Zheng, J. and Farrell, G.: "Temperature performance of a macrobending singlemode fiber based refractometer", Applied Optics, Vol. 49, No. 10, 1st April 2010, pp 1744-1749
  55. Hatta, A., Semenova, Y., Rajan, G. and Farrell, G.: "Polarization dependence of an edge filter based on singlemode-multimode-singlemode fibre", Optics and Laser Technology, Vol. 42, No. 6, pp 1044-1048
  56. Wu, Q., Rajan, G., Wang, P., Semenova, A. and Farrell, G.: "Optimum design for maximum wavelength resolution for an edge filter based ratiometric system", Optics and Laser Technology, Vol.42, No. 6, pp 1032-1037

    2009
  57. Hatta, A., Semenova, Y., Wu, Q. and Farrell, G.: "A strain sensor based on a pair of SMS fiber structures in a ratiometric power measurement scheme", Applied Optics, Vol. 49, No. 3, pp 536-541
  58. Wu, Q., Semenova, A., Sun, A., Wang, P. and Farrell, G.: "High resolution temperature insensitive interrogation technique for FBG sensors", Optics and Laser Technology, Vol 42, No. 4, pp 653-656
  59. Hatta, A., Semenova, Y., Rajan, G., Wang, P., Zheng, J. and Farrell, G.: "Analysis of temperature dependence for a ratiometric wavelength measurement system using SMS fiber structure based edge filters", Optics Communications, Vol. 283, No. 7, pp 1291-1295
  60. Wang, P., Semenova, Y., Wu, Q., Farrell, G., Ti, Y. and Zheng, J.: "A macrobending singlemode fiber based refractometer", Applied Optics, Vol. 48, No. 31, 1st November 2009, pp 6044-6049
  61. Wu, Q., Hatta, A., Semenova, A. and Farrell, G.: "Use of a SMS fiber filter for interrogating FBG strain sensors with dynamic temperature compensation", Applied Optics, Vol. 48, 2009, pp. 5451-5458
  62. Hatta, A., Rajan, G., Semenova, Y. and Farrell, G.: "A SMS fiber structure for temperature measurement using a simple intensity based interrogation system", Electronics Letters, Vol. 45, No. 21, pp 1069-1071
  63. Mathews, S., Semenova, Y. and Farrell, G.: "Electronic Tunability of Ferroelectric Liquid Crystal Infiltrated Photonic Crystal Fiber", Electronics Letters, Vol. 45, No. 12, pp 617-618
  64. Wang, P., Farrell, G. and Semenova, Y.: "A generalized design process for fiber bend loss based edge filters for a wavelength measurement system", Applied Optics, Vol. 48, No. 18, pp. 3055-3061, 2009.
  65. Wang, P., Farrell, G., Semenova, Y. and Rajan, G.: "Investigation of Polarization Dependent Loss for a Macrobending Loss Sensitive Singlemode Fiber", Microwave and Optical Technology Letters, Vol 51, No. 6, June 2009, pp 1460-1464
  66. Wang, P., Semenova, Y., Rajan, G., Freir, T. and Farrell, G.: "The temperature dependence of polarization dependent loss for a macrobending singlemode fiber based edge filter", IEEE Photonics Technology Letters, Vol 21, No. 8, April 15th 2009, pp 516-518
  67. Rajan, G., Semenova, Y., Wang, P. and Farrell, G.: "Temperature Induced Instabilities in Macro-Bend Fiber Based Wavelength Measurement Systems", IEEE Journal of Lightwave Technology, Vol 27, No. 10, 15th May 2009, pp 1355-1361
  68. Rajan, G., Semenova, Y. and Farrell, G.: "Analysis and performance evaluation of an all-fiber wide range interrogation system for a Bragg grating sensor array", Journal of Optics A: Pure and Applied Optics, 11, 2009
  69. Hatta, A., Farrell, G., Wang, P., Rajan, G. and Semenova, Y.: "Misalignment Limits for a Singlemode-Multimode-Singlemode Fiber Based Edge Filter", IEEE Journal of Lightwave Technology, Vol 27, No. 13, 1st July 2009, pp 2482-2488

    2008 and earlier
  70. Hatta, A., Farrell, G., Wang, P., Rajan, G. and Semenova, Y.: "Misalignment Limits for a Singlemode-Multimode-Singlemode Fiber Based Edge Filter", IEEE Journal of Lightwave Technology, Vol 27, No. 13, 1st July 2009, pp 2482-2488
  71. Yunqiang Ti, Feng Qiu, Yinghui Cao, Linghua Jia, Weiping Qin, Jie Zheng and Farrell. G.: "Photoluminescence of copper ion exchange BK7 glass planar waveguides", Journal of Materials Science, 2008, Vol 43, No. 22, pp 7073-7078
  72. Wang, P., Rajan, G., Semenova, Y. and Farrell, G.: "Temperature dependence of a macrobending edge filter based on a high-bend loss fiber", Optics Letters, Vol. 33, No. 21, 1st November 2008, pp 2470-2472
  73. Rajan, G., Semenova, Y. and Farrell, G.: "An all-fiber temperature sensor based on a macro-bend singlemode fiber loop", Electronics Letters, Vol. 44, No. 19, 11th September 2008
  74. Hatta, A., Farrell, G., Wang, Q., Rajan, G., Wang, P. and Semenova, Y.: "Ratiometric wavelength monitor based on singlemode-multimode-singlemode fiber structure", Microwave and Optical Technology Letters, Vol. 50, No. 20, December 2008, pp 3036-3039
  75. Rajan, G., Semenova, Y., Freir, T., Wang, P. and Farrell, G.: "Modelling and Analysis of the Effect of Noise on an Edge Filter Based Ratiometric Wavelength Measurement System", IEEE Journal of Lightwave Technology, Vol. 26, No. 20, October 15, 2008, pp 3434-3442
  76. Rajan, G., Semenova, Y., Farrell, G., Wang, Q. and Wang, P.: "A Low Polarization Sensitivity All-Fiber Wavelength Measurement System", IEEE Photonics Technology Letters, Vol. 20, No. 17, September 1, 2008, pp 1464-1466
  77. Wang, P., Farrell, G., Semenova, Y. and Rajan, G.: "Influence of fiber manufacturing tolerances on the spectral response of a bend loss based all-fiber edge filter", Applied Optics, Vol. 47, No. 16, June 1, 2008, pp 2921-2925
  78. Wang, P., Semenova, Y. and Farrell, G.: "Temperature dependence of macrobending loss in all-fiber bend loss edge filter", Optics Communications, Volume 281, Issue 17, 1 September 2008, pp 4312-4316
  79. Wang, Q., Farrell, G. and Yan, W.: "Investigation on singlemode-multimode-singlemode fiber structure", IEEE Journal of Lightwave Technology, Vol. 26, No. 5, March 1, 2008, pp 512-519
  80. Rajan, G., Semenova, Y., Farrell, G. and Wang, P.: "Effect of polarization dependent loss on the performance accuracy of a ratiometric wavelength measurement system", IET Optoelectronics, 2008, Vol. 2, No. 2, pp. 63-68
  81. Wang, Q., Rajan, G., Wang, P. and Farrell, G.: "Resolution investigation of ratiometric wavelength measurement system", Applied Optics, Vol. 46, Issue 25, 2007, pp. 6362-6367
  82. Wang, Q. and Farrell, G.: "Integrated Liquid Crystal Switch for both TE and TM modes: Proposal and Design", Journal of the Optical Society of America A, Vol. 24, No. 10, October 2007 pp 3303-3307
  83. Rajan, G., Semenova, Y., Wang, Q., Farrell, G., and Wang, P.: "A method to measure reference strain in FBG strain sensor interrogation system involving actuators", Microwave and Optical Technology Letters, Volume 49, Issue 11, November 2007, pp 2658-2661
  84. Wang, P., Farrell, G., Wang, Q. and Rajan. G.: "An optimized macrobending fiber based edge filter", Photonics Technology Letters, August 2007, Vol. 19, Issue 15, pp. 1136-1138
  85. Wang, P., Wang, Q., Farrell, G., Rajan, G, Freir, T. and Cassidy, J.: "Investigation of macrobending losses of standard single mode fiber with small bend radii", Microwave and Optical Technology Letters, Vol. 49, Issue 9, September 2007, pp. 2133-2138
  86. Wang, Q., Rajan. G., Wang, P. and Farrell, G.: "Polarization dependence of bend loss for a standard singlemode fiber", Optics Express, Vol. 15, Issue. 8, April 2007, pp. 4909-4920
  87. Wang, Q., Rajan. G., Farrell, G., Wang, P., Semenova, Y. and Freir, T.: "Macrobending fiber loss filter, ratiometric wavelength measurement and application", Measurement Science and Technology, Vol. 18 No. 10, October 2007, pp 3082-3088
  88. Rajan, G., Wang, Q., Farrell, G., Semenova, Y. and Wang, P.: "Effect of SNR of an input signal on the accuracy of a ratiometric wavelength measurement system", Microwave and Optical Technology Letters, Vol. 49, Issue 5, May 2007, pp. 1022-1024
  89. Wang, Q., Farrell, G. and Semenova, Y.: "Design of Integrated polarization beam splitter with liquid crystal covering layer and its design", IEEE Journal of Selected Topics in Quantum Electronics, Special issue devoted to Silicon Photonics, Vol 12, No. 6, November /December 2006, pp. 1349-1353
  90. Wang, Q., Farrell, G., Wang, P., Rajan. G. and Freir, T.: "Design of Integrated Wavelength Monitor based on a Y-branch with an S-bend Waveguide" Sensors and Actuators A: Physical, Vol.134, No.2, 2007, pp.405-409
  91. Wang, Q., Farrell, G., and Semenova, Y.: "Optimal Design of Birefringent Filter with a Flattop Passband", Journal of Optics. A: Pure Appl. Opt, 8 (2006) 652-656.
  92. Wang, Q., Farrell, G., Freir, T., Rajan. G., and Wang, P.: "Low-cost Wavelength Measurement based on a Macrobending Singlemode Fiber", Optics Letters, June 2006, Vol. 31, Issue 12, pp. 1785-1787
  93. Wang, Q.,Farrell, G., Multimode Fiber based Edge Filter for Optical Wavelength Measurement Application, Microwave and Optical Technology Letters, Vol. 48, No. 5, May 2006, pp. 900-902
  94. Wang, Q.,Farrell, G., "All-fiber Multimode-interference Based Refractometer Sensor: Proposal and Design", Optics Letters, Vol. 31, No.3, 2006, pp. 317-319
  95. Wang, Q.,Farrell, G., Semenova, Y.:"Modeling Liquid-crystal Devices with Three-dimensional Full-vector Beam Propagation Method", Journal of the Optical Society of America A, Vol 23, No.8, August 2006, pp 2014-2019.
  96. Wang, Q., Farrell, G., Freir, T.: "Effective Index Method for Planar Lightwave Circuits Containing Directional Couplers", Optics Communications, 259, pp.133-136, 2006, pp 133-136
  97. Wang, Q.,Farrell, G., Freir, T.: "Study of Transmission Response of Edge filters Employed in Wavelength Measurements", Applied Optics, Vol. 44, No.36, pp. 7789-7792, 2005
  98. Wang, Q., Farrell, G., Freir, T.: "Theoretical and Experimental Investigations of Macro-bend Losses for Standard Single Mode Fibers", Optics Express, Vol 13, No. 12. June 2005
  99. Wang, Q., Freir, T. and Farrell, G.: "Optimal Design of Broadband Linear Polarization Converters/Switches", Journal of Optics A: Pure and Applied Optics, 7, (2005) pp 47-50.
  100. Gao, C. and Farrell, G.: "Power Coupling between two Step-index Multimode Fibers of Different Numerical Apertures with an Angular Misalignment", Microwave and Optical Technology Letters, Vol. 43, No. 3, pp. 231-234, November 2004.
  101. Semenova Y., Dovgalets S., Panarin Y. and Farrell G.: "Liquid Crystal based optical switches", Journal of Molecular Crystals and Liquid Crystals, Vol. 413, pp. 385-398, 2004.
  102. Semenova Y., Panarin Y. and Farrell G, "Optical Switches using electro-optical effects in Liquid Crystals", Proc. SPIE Vol 4876, pp 249-259, 2003
  103. Egan, A, Rees P, O'Gorman J, Harley-Stead M,Farrell G, Hegarty J, Phelan P.: "Theoretical investigations of electro-optical synchronisation of self-pulsating laser diodes". IEE Proceedings in Optoelectronics, Vol. 143, No. 1, Feb. 1996, pp 31-36.
  104. Egan, A. O'Gorman, G., Rees, P.,Farrell, G., Hegarty, J., Phelan, P.: "Frequency Dependence of phase difference between synchronised self-pulsating laser emission and injected periodic signals", Electronics. Letters., May 1995, Vol 31, No. 10.
  105. Hyland, J. and Farrell, G. "Instability in Self-pulsation and its effects on All-optical synchronisation", Dec. 1994, Optical Engineering Journal, SPIE.
  106. Phelan, P., McDonald, D., Egan, A., Hegarty, J., O'Dowd, R.,Farrell, G., Lindgren, S., "Comparison of self-pulsation in multisection lasers with distributed feedback and intracavity satuarable absorbers", IEE Proceedings in Optoelectronics, Vol. 141, No. 2, Apr. 1994, pp 114-118.
  107. Farrell, G., Phelan, P., Hegarty, J., and Shields, J.A.: "All-optical Timing Extraction with Frequency Division using a Twin Section Laser Diode", Photonics Technology Letters, Vol 5 June 1993
  108. Farrell, G., Phelan, P., and Hegarty, J.: "The Influence of the Unlocked Characteristics of a Self-Pulsating Laser Diode on Synchronisation", Photonics Technology Letters, Vol 5 May 1993
  109. Phelan, P., Farrell, G., and Hegarty, J.: "New Optical Signal Processing Functions in Laser Diodes; Frequency Division and Multiplication", Optics and Photonics News, Special issue on "Optics in 1992", December 1992
  110. Phelan, P., Farrell, G., and Hegarty, J.: "All-optical Synchronisation and Multiplication of the Frequency of Mode-locked Signals", Photonics Technology Letters, Vol 4, No. 12, pp 1332-1335, December 1992
  111. Farrell, G., Phelan, P. and Hegarty, J.: "All optical clock distribution with synchronous frequency division and multiplication", Electronic Letters., 1992, Vol 28, No. 15, pp. 1387-1388
  112. Phelan, P., Farrell, G., and Hegarty, J.: "All-optical synchronisation and Frequency Division of Mode-Locked Pulses", Photonics Technology Letters, August 1992, Vol 4, No. 8, pp. 930-932
  113. Farrell, G., Phelan, P. and Hegarty, J.: "All-optical synchronisation with Frequency division using a self-pulsating laser diode", Electronic Letters., 1992, Vol 28, No. 8, pp. 738-739
  114. Farrell, G., Phelan, P. and Hegarty, J.: "Self-Pulsation operating regime for the Absorber of a twin section laser diode", Electronic Letters., 1991, Vol 27, No. 16, pp. 1403-1404

Conference Publications



    2012
  1. Mathews, S., Semenova, Y., Callaghan, D., Rajan, D. and Farrell, G.: "Photonic Crystal Fiber Strain Sensors for Laparoscopic Surgical Staplers", Accepted for the Photonics Global Conference (PGC) 2012, Singapore, 13th-16th December 2012102.
  2. Mathews, S., Semenova, Y., Callaghan, D., Rajan, D. and Farrell, G.: "Temperature Insensitive Miniature Photonic Crystal Fiber Strain Sensors", Accepted for the International Conference on Fiber Optics and Photonics, Madras, India, December 9th-12th, 2012
  3. Ramkrishnan, M., Rajan, G., Semenova, Y., and Farrell, G.: "Characterization of polarimetric sensors embedded in carbon and glass reinforced composite materials for strain/temperature measurement", Accepted for the International Conference on Fiber Optics and Photonics, Madras, India, December 9th-12th, 2012
  4. Ma. Y., Farrell, G., Semenova, Y., Chan, H.P. and Wu, Q.: "High sensitivity refractive index sensor based on multimode fiber coated with an axisymmetric metal grating layer", Asia Communications and Photonics Conference, ACP 2012, Guangzhou, China, 7th-10th November 2012
  5. Semenova, Y., Bo, L., Mathews, S., Wang, P., Wu, Q. and Farrell, G.: "Spectral tuning of a microfiber coupler with a liquid crystal overlay", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  6. Wang, P., Brambilla, G., Ding, M., Bo, L., Semenova, Y., Wu, Q. and Farrell, G.: "Refractive index sensing measurement based on periodically tapered small core singlemode fibre", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  7. Wu, Q., Ma. Y., Semenova, Y., Wang, P., Chan, H.P. and Farrell, G.: "Enhanced RI sensitivity sensor withusing a combination of a long period fiber grating and a small core singlemode fiber (SCSMF) structure", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  8. Bo, L., Wang, P., Semenova, Y., Brambilla, G. and Farrell, G.: "An investigation of the polarization dependence of a temperature sensor based on an optical microfiber coupler", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  9. Ramkrishnan, M., Rajan, G., Semenova, Y., Wolinski, T. and Farrell, G.: "Comparison of vibration measurements in composite materials using different types of polarimetric sensors", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  10. Ma. Y., Farrell, G., Semenova, Y., Chan, H.P. and Wu, Q.: "A Novel Biosensor based on a Coupled Surface Plasmon Nanostructure", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  11. Mathew. J., Semenova, Y. and Farrell, G.: "A high sensitivity humidity sensor based on an Agarose coated photonic crystal fiber interferometer", International Conference on Optical Fiber Sensors - OFS-22, Beijing, 15 - 19 October 2012
  12. Semenova, Y., Mathews. S., Rajan, G. and Farrell, G.: "Control of light propagation in optical fibers using liquid crystals for applications in optical communications and sensing", International Conference on Photonics, ICP 2012, Malaysia, 1st-3rd October 2012
  13. Ma. Y., Farrell, G., Semenova, Y., Wu, Q.: "Novel nano-plasmonic splitter based on T-shaped Bragg grating waveguide", SPIE Photonics Europe 2012, Brussels, 16 - 19 April 2012
  14. Ramkrishnan, M., Rajan, G., Semenova, Y., Wolinski, T. and Farrell, G.: "Design of a demodulation scheme for a hybrid fiber sensor system for composite materials", SPIE Photonics Europe 2012, Brussels, 16 - 19 April 2012
  15. Wang, P., Brambilla, G., Ding, M., Semenova, Y., Farrell, G.: "An SMS fiber structure based on chalcogenide multimode fiber", SPIE Photonics Europe 2012, Brussels, 16 - 19 April 2012

    2011
  16. Ramkrishnan, M., Rajan, G., Lesiak, P., Semenova, Y., Domanski, A.W., Wolinski, T., Boczkowska, A. and Farrell, G.: "Detection of thermal expansion of carbon and glass reinforced fiber composite materials using polarimetric and fiber Bragg grating sensors", International Conference on Trends in Optics and Photonics, Calcutta, India, 7th-9th December 2011
  17. Mathew, J. Semenova, Y. and Farrell, G.: "Polymer Coated Photonic Crystal Fiber Interferometer for Relative Humidity Sensing ", International Conference on Trends in Optics and Photonics, Calcutta, India, 7th-9th December 2011
  18. Rajan, G., Ramkrishnan, M., Semenova, Y., Farrell, G., Domanski, A.W., Boczkowska, A. and Wolinski, T.: "Performance analysis and comparison of composite materials, embedded with different optical fiber sensor types", IEEE Sensors Conference 2011, Limerick, 28-31 October 2011
  19. Mathews. J., Semenova, Y. and Farrell, G.: "A miniature optical humidity sensor", IEEE Sensors Conference 2011, Limerick, 28-31 October 2011
  20. Ma. Y., Wu. Q., Semenova, Y. and Farrell, G.: "The influence of the structure of a sub-wavelength grating on its transmission efficiency", Photonics Ireland 2011 Conference, Dublin, 7- 10 September 2011
  21. Wolinski, T., Lesiak, P., Plaga, R., Szelag, M., Budaszewski, D., Domanski, A.W., Boczkowska, A., Rajan, G., Semenova, T. and Farrell, G.: "Stress induced in optical fiber sensors embedded in composite materials by the lamination process". Metrologica 2011, Brazil, 27-30 September 2011
  22. Wang, P., Brambilla, G., Semenova, Y., Wu, Q., Zheng, J. and Farrell, G.: "The use of 2D and 3D WA-BPM models to analyze total-internal-reflection based integrated optical switches", International Symposium On Photoelectronic Detection and Imaging 2011, Beijing, China, 24-26 May 2011.
  23. Mathew, J., Rajan, G., Semenova, Y. and Farrell, G.: "Agarose coated single mode optical fiber bend for monitoring humidity", SPIE Optics & Optoelectronics International Symposium, Prague, 18 - 21 April 2011
  24. Wang, P., Brambilla, G., Semenova, Y., Wu, Q. and Farrell, G.: "Optimization of an Integrated Wavelength Monitor Device", SPIE Optics & Optoelectronics International Symposium, Prague, 18 - 21 April 2011
  25. Lesiak, P., Rajan, G., Semenova, Y., Farrell, G., Boczkowska, A., Budaszewski, D., Domanski, A. and Wolinski. T.: "Influence of the lamination process on the strain sensitivity of the fiber sensors embedded in composite materials", International Conference on Optical Fiber Sensors - OFS-21, Ottawa, Canada, 15 - 19 May 2011
  26. Wu, Q., Semenova, Y., Wang, P. and Farrell, G.: "The use of a bent singlemode-multimode-singlemode (SMS) fiber structure for vibration sensing", International Conference on Optical Fiber Sensors - OFS-21, Ottawa, Canada, 15 - 19 May 2011
  27. Wang, P., Brambilla, G., Ding, M., Wang, Y., Semenova, Y., Wu, Q. and Farrell, G.: "An improved ratiometric wavelength measurement system incorporating fibre comb filters fabricated by CO2 laser irradiation", International Conference on Optical Fiber Sensors - OFS-21, Ottawa, Canada, 15 - 19 May 2011
  28. Rajan. G, Callaghan. D., Semenova. Y. and Farrell. G.: "Miniature temperature insensitive fiber optic sensors for minimally invasive surgical devices", International Conference on Optical Fiber Sensors - OFS-21, Ottawa, Canada, 15 - 19 May 2011
  29. Mathew, J., Rajan, G., Semenova, Y. and Farrell, G.: "Photonic crystal fiber interferometer for dew detection", International Conference on Optical Fiber Sensors - OFS-21, Ottawa, Canada, 15 - 19 May 2011
  30. Budaszewski, D., Lesiak, P., Plaga, R., Rajan, G., Semenova, Y., Farrell, G., Boczkowska, A., Domanski. A. and Wolinski. T.: "Influence of angular orientation of the embedded HB fiber on PMD changes under axial stress", IOS-2011, Integrated Optics - Sensors, Sensing Structures and Methods, Poland, 28 Feb - 5 Mar 2011
  31. Ramakrishnan, M., Rajan, G., Semenova, Y., Lesiak, P., Domanski, A., Wolinski, T. and Farrell, G.: "Design of a flexible electro-optic polymer phase modulator for demodulation of polarimetric sensors", IOS-2011, Integrated Optics - Sensors, Sensing Structures and Methods, Poland, 28 Feb - 5 Mar 2011

    2010
  32. Wu, Q., Semenova, Y., Wang, P., Hatta, A.M. and Farrell, G.: "Simultaneous measurement of displacement and temperature with a single SMS fiber structure", Asia Communications and Photonics Conference and Exhibition (ACP 2010), Shanghai, China, 9 - 11 December 2010
  33. Wang, P., Brambilla, G., Semenova, Y., Wu, Q., Zheng, J. and Farrell, G.: "Proposal for a Simple Polarization Converter based on Integrated Optical Ion Exchanged Waveguide", 9th International Conference on Optical Communications and Networks, Nanjing, China, 24 - 27 October 2010
  34. Ramakrishnan, M., Rajan, G., Semenova, Y. and Farrell, G.: "Composite materials with embedded optical fiber sensors for in-situ structural health monitoring", Workshop & International Conference on Smart Materials (WICSM) 2010, Dublin, 22 - 24 September 2010
  35. Ramakrishnan, M., Rajan, G., Semenova, Y. and Farrell, G.: "Design of a surface attachable hybrid fiber sensor packaged in a polyimide film for engineering applications", Fourth European Workshop on Optical Fibre Sensors, EWOFS2010, Portugal, 7 - 10 September 2010
  36. Wang, P., Semenova. Y., Wu, Q. and Farrell, G.: "A macrobending fiber based micro-displacement sensor", SOPO2010, The 2nd International Symposium on Photonics and Optoelectronics, Chengdu, China, 19 - 21 June 2010
  37. Mathews, S., Semenova, Y. and Farrell, G.: "Liquid Crystal filled Photonic Crystal Fibers for Voltage Sensing Applications", SPIE Photonics Europe, Brussels, 12 - 16 April 2010
  38. Rajan, G., Matthews, S., Farrell, G. and Semenova, Y.: "Characterization of Liquid Crystal Coated Photonic Crystal Fiber Interferometers", SPIE Photonics Europe, Brussels, 12 - 16 April 2010
  39. Madhav, K., Semenova. Y. and Farrell, G.: "Macro-bend Optical Fiber Linear Displacement Sensor", SPIE Photonics Europe, Brussels, 12 - 16 April 2010
  40. Wang, P., Semenova. Y., Wu, Q., Sun, A. and Farrell, G.: "A macrobending fiber based vibration sensor using a bend fibre half-loop", SPIE Photonics Europe, Brussels, 12 - 16 April 2010
  41. Wu, Q., Semenova. Y. Hatta, A, Wang, P. and Farrell, G.: "Use of Single-Multiple-Single mode fiber filters for simultaneously measuring strain and temperature", SPIE Photonics Europe, Brussels, 12 - 16 April 2010
  42. Wang, P., Semenova. Y. and Farrell, G.: "Implementation of Fiber Filters Based on a Macrobending High-Bend Loss Fiber Utilizing the Whispering Gallery Mode Effects", SPIE Conference of Defense, Security and Sensors, Orlando, Florida, 5 - 9 April 2010
  43. Wolinski, T., Domanski, A,W., Lesiak, P., Szekag, M., Milenko, K., Jedrzejewski, K., Boczkowska, A., Kurzydlowski, K.J., Rajan, G., Semenova, Y. and Farrell, G.: "Fiber-Optic Smart Structures with Embedded Sensors", 4th Integrated Optics - Sensors, Sensing Structures and Methods Conference, Poland, 1 - 5 March 2010

    2009
  44. Ti, Y., Hea, X., Zhang, J., Cao, Y., Zheng, J., Wang, P. and Farrell, G.: "Cu-Na Ion Exch Soda-Lime Glass Planar Waveguides and their Photoluminescence", SPIE-OSA-IEE Asia Communications and Photonics, 2 - 6 November 2009, Shanghai, China, Proc SPIE 7630-48
  45. Mathew, J., Wang, P., Rajan, G., Semenova. Y. and Farrell, G.: "Polyethylene oxide coated singlemode fiber bend for monitoring humidity change", SENNET 2009, India, 7 - 10 December 2009
  46. Wu, Q., Farrell, G. and Semenova. Y.: "Influence of system configuration on a ratiometric wavelength measurement system", Optical Fiber Sensors Conference 20, Edinburgh, 5 - 9 October 2009
  47. Mathew, J., Rajan, G., Semenova. Y. and Farrell, G.: "All Fiber tunable loss filter", Optical Fiber Sensors Conference 20, Edinburgh, 5 - 9 October 2009
  48. Wang, P., Semenova. Y., Wu, Q. and Farrell, G.: "A macrobending fiber based micro-displacement sensor utilizing whispering-gallery modes", Optical Fiber Sensors Conference 20, Edinburgh, 5 - 9 October 2009
  49. Bakhvalova, T., Rajan, G., Semenova. Y. and Farrell, G.: "A tunable high resolution FBG demodulation system using photonic crystal fiber loop mirrors", Optical Fiber Sensors Conference 20, Edinburgh, 5 - 9 October 2009
  50. Wu, Q., Farrell, G. and Semenova. Y.: "A simple, high sensitivity interrogation system for FBG temperature sensing", Photonics Ireland 2009, Kinsale, 14 - 16 September 2009
  51. Mathew, J., Wang, P., Rajan, G., Semenova. Y. and Farrell, G.: "A humidity sensor based on a bend singlemode fiber", Photonics Ireland 2009, Kinsale, 14 - 16 September 2009
  52. Wang, P., Farrell, G. and Semenova. Y.: "A high sensitivity temperature sensor based on a macrobending fiber", Photonics Ireland 2009, Kinsale, 14 - 16 September 2009
  53. Callaghan, D., McGrath, M., Rajan, G., Coyle, E., Semenova, Y and Farrell, G.: "Analysis of Strain Transfer to FBGs for Sensorized Telerobotic End-Effector Applications", German Workshop on Robotics, 2009, 9 - 10 June 2009
  54. Wu, Q., Rajan, G., Wang, P., Semenova. Y. and Farrell, G.: "Optimum design for maximum resolution for an edge filter based ratiometric wavelength measurement system", SPIE ISPDI Symposium, Beijing, 17 - 18 June 2009
  55. Hatta, A. and Farrell, G.: "Ratiometric wavelength monitor using a pair of symmetrical multimode interference structures based on silicon-on-insulator (SOI)." SPIE Symposium on Microtechnologies, Dresden, 4 - 6 May 2009
  56. Matthews, S., Semenova, Y., Rajan, G. and Farrell, G.: "Experimental demonstration of a Ferroelectric LC Tunable Filter for Fast Demodulation of FBG Sensors", SPIE Europe International Congress on Optics and Optoelectronics, Prague, 20 - 24 April 2009
  57. Hatta, A., Rajan, G., Farrell, G. and Semenova, Y.: "Ratiometric wavelength monitor based on X-type spectral response using two edge filters", SPIE Europe International Congress on Optics and Optoelectronics, Prague, 20 - 24 April 2009
  58. Matthews, S., Semenova, Y. and Farrell, G.: "Tunable properties of liquid crystal-filled photonic crystal fibers", SPIE Defense, Security, and Sensing, Florida, 13 - 17 April 2009.
  59. Rajan, G., Mathews, J., Semenova, Y. and Farrell, G.: "Evaluation of the performance of a novel low-cost macro-bend fiber based temperature sensor", SPIE Defense, Security, and Sensing, Florida, 13 - 17 April 2009

    2008 and earlier
  60. Matthews, S., Semenova, Y. and Farrell, G.: "Theoretical modeling of the tunable properties of Ferroelectric Liquid Crystal filled Photonic Crystal Fibers", Photonics 2008, Hyderabad, India, 14 - 17 December 2008
  61. Rajan, G., Semenova, Y. and Farrell, G.: "Applications of macro-band loss in singlemode fibers: FBG interrogator and temperature sensor", Photonics 2008, Hyderabad, India, 14 - 17 December 2008
  62. Qiu, F., Ti, Y., Zhang, J., Cao, Y., Zheng, J., Wang, P. and Farrell, G.: "Photoluminescence of copper ion-exchanged planar waveguides in commercial soda-lime glass", Asia-Pacific Optical Communications 2008 conference, Hangzhou, China, 26 - 30 October 2008
  63. Rajan, G., Semenova, Y. and Farrell, G.: "An all-fiber interrogation system for a Bragg grating array", Optics and Photonics 2008 Conference, Edinburgh, 26 - 29 August 2008
  64. Wang, P., Semenova, Y. and Farrell, G.: "A Macrobending Singlemode Fiber Based Refractometer: Proposal and Design", Optics and Photonics 2008 Conference, Edinburgh, 26 - 29 August 2008
  65. Hatta, A., Farrell, G. and Wang, Q.: "A simple integrated ratiometric wavelength monitor based on multimode interference structure", SPIE Optical System Design Conference Glasgow UK, 2 - 5 September 2008
  66. Hatta, A., Farrell, G., Wang, Q., and Zheng, J.: "Design of the optical core of an integrated ratiometric wavelength monitor", European Conference on Integrated Optics (ECIO 08), Eindhoven, 11-13 June 2008
  67. Farrell, G., and Gao, C.: "Enhanced Resolution of a POF based Refractometer Sensor using a novel hybrid silica-fiber POF directional coupler", SPIE Photonics Europe, Strasbourg, 7-11 April 2008
  68. Rajan, G., Semenova, Y. and Farrell, G., Wang, Q. and Wang, P: "Investigation of the influence of 3 dB coupler on ratiometric wavelength measurements", SPIE Photonics Europe, Strasbourg, 7-11 April 2008
  69. Matthews, S., Semenova, Y. and Farrell, G.: "Discretely Tunable Ferroelectric Liquid Crystal Filter for Demodulation of Multiple FBG sensors", SPIE Photonics Europe, Strasbourg, 7-11 April 2008
  70. Wang, P., Farrell, G., Semenova, Y., Wang, Q., Hatta, A. and Rajan, Q.: "Accurate theoretical prediction on singlemode fiber macrobending loss and bending induced polarization dependent loss", SPIE Photonics Europe, Strasbourg, 7-11 April 2008
  71. Hatta, A., Wang, Q., Farrell, G., and Zheng, J.: "A design method for a ratiometric wavelength monitor using a pair of directional couplers acting as edge filters", SPIE Photonics Europe, Strasbourg, 7-11 April 2008
  72. Hatta, A., Farrell, G. and Semenova, Y: "Design of a Multiple MMI Structure for (BIO-) Chemical Sensor Applications", Europtrode Conference IX, Dublin, 30 March-2 April 2008
  73. Chuckravanen, D., Moloney, A. and Farrell, G.: "Depth Measurement using a Time-Of-Flight Method based on Time-Correlated Single Photon Counting", IET Irish Signals and Systems Conference, Londonderry, N. Ireland, 13-14 September, 2007
  74. Wang, Q., Farrell, G. and Hatta, A.: "Optimization of multimode interference structure for ratiometric wavelength measurement", Third European Workshop on Optical fibre Sensors, Naples, Italy, 4-6 July, 2007
  75. Semenova, Y., Farrell, G., Rajan, P.: "Fabry-Perot liquid crystal tunable filter for interrogation of multiple Fibre Bragg Grating sensors", SPIE International Congress on Optics and Optoelectronics, Prague, 16-19 April 2007, Ref: 6587-39
  76. Wang, Q., Farrell, G., Wang, P.: "Resolution of a ratiometric system for wavelength measurement", SPIE International Congress on Optics and Optoelectronics, Prague, 16-19 April 2007, Ref: 6585-08
  77. Rajan, G., Semenova, Y., Wang, Q., Farrell, G and Wang, P.: "Fibre bend loss ratiometric wavelength demodulation system for an FBG strain sensor", Photonics 2006, Hyderabad, India, 9-11 December 2006
  78. Semenova, Y., Farrell, G., Wang, Q. and Rajan, G.: "Demodulation of Multiple Fibre Bragg Grating Sensors using a Ferroelectric Liquid Crystal Tunable Filter", OSA Optical Fiber Sensing Conference, Mexico, 23-27 October 2006
  79. Wang, Q., Farrell, G., Wang, P., Rajan, G., Semenova, Y. and Freir, T.: "Macrobending Standard Singlemode Fiber and its Novel Application in Optical Sensing", OSA Optical Fiber Sensing Conference, Mexico, 23-27 October 2006
  80. Bent, S., Moloney, A. and Farrell, G.: "LEDs as both Optical Sources and Detectors in Bi-directional Plastic Optical Fibre Links", IET Irish Signals and Systems Conference, Dublin, June 2006.
  81. Farrell, G. and Gao, C.: "Sources and levels of crosstalk in a bi-directional Plastic Optical Fibre data transmission link", SPIE Photonics Europe, Strasbourg, 3rd-7th April 2006
  82. Wang, Q. and Farrell, G.: "Numerical Investigation of Multimode Interference in a Multimode Fiber and its Applications in Optical Sensing", SPIE Photonics Europe, Strasbourg, 3rd-7th April 2006
  83. Semenova, Y., Panarin, Y. and Farrell, G.: "Fast Free-Space Photonic Switch Based on a Ferroelectric Liquid Crystal", SPIE Photonics Europe, Strasbourg, 3rd-7th April 2006
  84. McMillan, N.D., Egan, J.J., Denieffe, D., Farrell, G.: "Optical telecommuncations system design using data-entropy and data-scatter methods". SPIE Photonics North conference, Toronto, 12-14 September 2005, Paper Ref. 5970-65
  85. McMillan, N.D., Egan, J.J., Denieffe, D., Farrell, G., McGowan, G., Riedel, S., Tiernan, K., McMillan, D.G.E ., Kennedy, D., Doyle, G., Augousti, A.: "A new data diffraction method for digital signal analysis and optoelectronic-fibre system-digital design", SPIE Opto-Ireland Conference, Dublin, April 2005, Paper Ref. 5825-90
  86. Freir, T.M. and Farrell, G.: "Temperature dependence of a multiple turn bend loss component based on SMF28", SPIE Opto-Ireland Conference, Dublin, April 2005, Paper Ref. 5825-82
  87. Wang, Q. and Farrell, G.: "Modelling and analysis of fibre bending loss", SPIE Opto-Ireland Conference, Dublin, April 2005, Paper Ref. 5825-80
  88. Semenova, Y., Panarin, Y. and Farrell, G.: "High-speed switch for all-optical networks based on a ferroelectric liquid crystal", SPIE Opto-Ireland Conference, Dublin, April 2005, Paper Ref. 5825-92
  89. Gao, C. and Farrell, G.: "Downlink coupling of a novel POF directional coupler", SPIE Opto-Ireland Conference, Dublin, April 2005, Paper Ref. 5825-84
  90. Semenova, Y., Lee, S., Panarin, Y. and Farrell, G.: "Total reflection optical switch using a nematic Liquid Crystal", 15th International Conference on Liquid Crystals, Zakopane, Poland, 13-17 Oct. 2003.
  91. McMillan, N.D., Denieffe, D., Riedel, S., Tiernan, K., McMillan, D.G.E.,Farrell, G., Kennedy, D., Egan, J., Doyle, G., Augousti, A., and Mason, J.: "Theoretical enquiry into the use of data entropy methods for optoelectronic-fibre system-digital design", IT & T conference, Letterkenny, Oct. 2003.
  92. Gao, C. and Farrell, G.: "Modelling of Rayleigh backscattering in plastic optical fibre", IEEE High Frequency Postgraduate student colloquium, Belfast, Sept. 2003.
  93. Freir, T. and Farrell, G.: "Suitability of SMF28 fibre as a wavelength filter using the bend loss technique", IEE/IEEE Telecommunications Systems Research Symposium, Dublin, May 2003
  94. Quinn, D. and Farrell, G.: "Responsivity of RCLEDs for use in bi-directional fibre communications systems", IEE/IEEE Telecommunications Systems Research Symposium, Dublin, May 2003.
  95. Farrell, G. and Quinn, D.: "Enhancing student learning in physical layer design for optical communications networks", SPIE Opto-Ireland Conference, Galway, September 2002
  96. Gao, C. and Farrell, G.: "Numerical aperture characteristics of angle-ended plastic optical fibre", SPIE Opto-Ireland Conference, Galway, September 2002
  97. Semenova, Y., Panarin, Y. and Farrell, G.: "Optical switches using electro-optical effects in Liquid Crystals", SPIE Opto-Ireland Conference, Galway, September 2002
  98. Chang, M., Panarin, Y. and Farrell, G.: "Real grey-scale in electrooptic response in a novel liquid crystal phase", SPIE Opto-Ireland Conference, Galway, September 2002
  99. Semenova, Y., Panarin Y., Dovgalets, S., and Farrell, G.: "Liquid crystal based optical matrix switches", Abstracts of the 19th International Liquid Crystal Conference, Edinburgh, UK, 2002, P667.
  100. Molony, C. and Farrell, G.: "Synchronisation detection for Self-Pulsating Laser diodes", International Postgraduate Research Student Conference, D.I.T. Aungier St., November 1998
  101. O'Leary, P and Farrell, G.: "Low bit rate communications over the ISDN and the low voltage network, Irish Signals and Systems Conference, D.I.T. Kevin St., June 1998
  102. Gobbett, B., Downing, C.P., Farrell, G. and Foley, B.: "Factors Limiting the Range of the Basic Rate ISDN U-Interface", Irish Signals and Systems Conference, University of Ulster, June 1997
  103. Molony, C. and Farrell, G.: "Synchronisation Detection for Self-Pulsating Laser Diodes", Lasers and Optical Engineering Conference, Galway, June 1997
  104. Fingleton, M. and Farrell, G.: "Performance Analysis of the Fibre Distributed Data Interface", Optoelectronics and Photonics Europe Conference, Dublin, May 1996.
  105. Hyland, J. and Farrell, G.: "Active Temperature Control of a Self-pulsating Laser Diode", Irish Optoelectronics Group conference, Limerick, May 1994.
  106. Fingleton, M. and Farrell, G.: "Computer Based Training in Optical Communications Systems", Irish Optoelectronics Group conference, Limerick, May 1994.
  107. Houston, S. and Farrell, G.: "RF Spectral Analysis of Self-pulsating Frequency Shift Keying", Irish Optoelectronics Group conference, Limerick, May 1994.
  108. Hyland, J. and Farrell, G.: "The Effect of Temperature on the Self-Pulsation Frequency of Twin Section Laser Diodes", Irish Optoelectronics Group conference, Limerick, May 1993.
  109. Farrell, G., Phelan, P., and Hegarty, J.: "Optoelectronic Variable Frequency Pulse Generation", European Conference on Optical Communication, Switzerland, Sept., 1993.
  110. Phelan, P., Egan, A., Farrell, G. and Hegarty, J.: "Self-pulsation and relaxation Oscillation Frequencies in Laser diodes", Semiconductor and Integrated Optoelectronics Conference, Cardiff, March, 1993.
  111. Farrell, G., Phelan, P., and Hegarty, J.: "Optoelectronic Variable Frequency Pulse Synthesis", Semiconductor and Integrated Optoelectronics Conference, Cardiff, March, 1993.
  112. Phelan, P., Farrell, G. and Hegarty, J.: "Injection Locking Properties of Multisection self-pulsating laser diodes", Semiconductor and Integrated Optoelectronics Conference, Cardiff, April, 1992.
  113. Farrell, G., Phelan, P. and Hegarty, J.: "All optical clock distribution with synchronous frequency division and multiplication", European Conference on Optical Communication, TuP-1.24, Berlin, September, 1992