Sub-picostrain sensing by laser frequency locking to a passive fiber Bragg resonator

Jong H. Chow; Ian C. M. Littler; David E. McClelland; Malcolm B. Gray

doi:10.1117/12.639997

23 May 2005 Sub-picostrain sensing by laser frequency locking to a passive fiber Bragg resonator

Jong H. Chow, Ian C. M. Littler, David E. McClelland, Malcolm B. Gray

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.639997
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

We demonstrate, for the first time, a sensing architecture capable of detecting broadband dynamic strain beyond picostrain resolution, with signal frequencies extending from 100 Hz to beyond 100 kHz. The system uses a pre-stabilized external cavity diode laser to interrogate a passive fiber Bragg resonator, using the Pound-Drever-Hall frequency locking technique. The low-loss resonator comprises of a Bragg grating pair written in standard SMF-28 fiber.

Citation Download Citation

Jong H. Chow, Ian C. M. Littler, David E. McClelland, and Malcolm B. Gray "Sub-picostrain sensing by laser frequency locking to a passive fiber Bragg resonator", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.639997

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