Low noise semiconductor laser for optical fiber sensing

M. Poulin; S. Ayotte; A. Babin; M. Aubé; C. Latrasse; J.-F. Cliche

doi:10.1117/12.835426

5 October 2009 Low noise semiconductor laser for optical fiber sensing

M. Poulin, S. Ayotte, A. Babin, M. Aubé, C. Latrasse, J.-F. Cliche

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75037M (2009) https://doi.org/10.1117/12.835426
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Semiconductor lasers are of great interest in high performance optical fiber sensing systems because of their high reliability, lifetime, low cost and size. However, their linewidth and phase noise are often a limitation. Using frequency discrimination based on a specially designed fiber Bragg grating, we decrease the linewidth of a semiconductor laser to the kHz level, with phase noise reduction up to 1 MHz. Using a phase modulator in a second feedback loop to correct fast phase fluctuations, we demonstrate that the bandwidth can be pushed above 10 MHz.

Citation Download Citation

M. Poulin, S. Ayotte, A. Babin, M. Aubé, C. Latrasse, and J.-F. Cliche "Low noise semiconductor laser for optical fiber sensing", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75037M (5 October 2009); https://doi.org/10.1117/12.835426

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