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About

Discover the routes into studying at WIT for school leavers, adult learners, further education students, graduates and people who have already started studies elsewhere as well as options for those interested in online courses.

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News & Events

Dr. Kieran  O'Mahoney

Title:

Senior Research Engineer

School/ Department:

Engineering - Engineering Technology

Telephone:

+353 0 51302657

Room Name/ Num:

C15 1969 - Main Building

Campus:

Main Campus

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My Biography

K. O'Mahoney and D. Murphy, "A Static Fiber Fourier Transform Spectrometer," in Frontiers in Optics, OSA Technical Digest (Optical Society of America, 2011), paper FThU3.

 

D. F. Murphy, N. Healy, K. T. O'Mahoney, and C. D. Hussey, "Adiabatically Expanded Single-mode Optical Fibers for Reduced Optical Power Density and Enhanced Reliability," in Optical Fiber Communication Conference, OSA Technical Digest (Optical Society of America, 2012), paper OTh4I.3.

 

Coherence and anticoherence resonance in high-concentration erbium-doped fiber laser.

Sergeyev S, O'Mahoney K, Popov S, and Friberg AT

Optics letters 35(22):3736-8, 2010.

 

Sergey Sergeyev, Kieran O’Mahoney, “Polarisation Instabilities as a source of deterministic coherence and anticoherence resonance in Erbium doped fibre laser”, Europhoton 2010, Hamburg, Germany.

 

Sergey Sergeyev, Kieran O’Mahoney. “Coherence and Anticoherence Resonance in Erbium Doped Fiber Laser”, Laser Optics 2010, St. Petersburg, Russia.
 

S. Sergeyev and K. O'Mahoney, "Polarization Instabilities Assisted Coherence and Anticoherence Resonance in Erbium Doped Fiber Laser," in Nonlinear Photonics, OSA Technical Digest (CD) (Optical Society of America, 2010), paper NTuC27.

 

Short-scan fiber interferometer for high-resolution Bragg grating array interrogation

Kieran O’Mahoney1, R.P. O’Byrne1, Sergey V. Sergeyev1, L. Zhang2, and I. Bennion2

1Waterford Inst. of Technology, Ireland

2Aston University, Birmingham, U.K.

IEEE Sensors Journal, Vol. 9, No. 10, p1277-1281, Oct. 2009.

 

S. V. Sergeyev, K. O'Mahoney, S. Popov, and A. T. Friberg, "Upconversion Assisted Auto-Oscillations in Erbium Doped Fiber Laser," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper JWA55.

 

S. Sergeyev, K. O’Mahoney, S. Popov, and A.T. Friberg, ”Pump-to-signal intensity noise transfer as the mechanism of self-pulsing in Erbium doped fiber laser”, Optical Fiber Com­munication Conference and National Fiber Optic Engineers Confer­ence (OFC/NFOEC), San Diego, CA, USA, 22-26 March 2009, paper OWT4.

 

Upconversion assisted self-pulsing in a high-concentration erbium doped fiber laser

Sergey V. Sergeyev1, Kieran O'Mahoney1, Sergei Popov2, Ari T. Friberg2,3,4; 1Waterford Inst. of Technology, Ireland, 2Royal Inst. of Technology, Sweden, 3Helsinki Univ. of Technology, Finland, 4Univ. of Joensuu, Finland.

Central European J. Physics, Vol. 8, No. 2, p159-163, 2010.

 

Implications of high-power losses in IR femtosecond laser inscribed fiber Bragg gratings.

K. T. O’Mahoney1, A. S. Main2, D. J. Webb2, A. Martinez2, and D. A. Flavin1.

1Waterford Inst. of Technology, Ireland

2Aston University, Birmingham, U.K.

Proceedings of S.P.I.E. Reliability of Optical Fiber Components, Devices, Systems,

and Networks III, vol. 6193 (H. G. Limberger and M. J. Matthewson, eds.), Strasbourg, (France),May 2006.

 

Demodulation of serial fibre Bragg grating arrays by Fourier transform spectroscopy using an over-moded laser reference

K. T. O’Mahoney1, D. A. Flavin1, L. Zhang2, and I. Bennion2

1Waterford Inst. of Technology, Ireland

2Aston University, Birmingham, U.K.

Proceedings of S.P.I.E. 17th International Conference on Optical Fibre Sensors, vol. 5855 (M. Voet, R.Willsch,W. Ecke, J. Jones, and B. Culshaw, eds.), (Brugges, Belgium), pp. 651–654,May 2005.

 

High-resolution interferometric spectroscopy for analysis of fibre Bragg grating sensor arrays

K. T. O’Mahoney1, D. A. Flavin1, L. Zhang2, and I. Bennion2

1Waterford Inst. of Technology, Ireland

2Aston University, Birmingham, U.K.

Opto-Ireland, Optical Sensing and Spectroscopy, Oral Presentation, April 2005.

 

Fourier transform-based spectral measurements on multiplexed fibre Bragg grating arrays

K. T. O’Mahoney1, D. A. Flavin1, L. Zhang2, and I. Bennion2

1Waterford Inst. of Technology, Ireland

2Aston University, Birmingham, U.K.

Proceedings of S.P.I.E. Second European Workshop on Optical Fibre Sensors, vol. 5502 (B. Culshaw, ed.), (Santander, Spain), pp. 423–426, 2004.