High birefringence fibre interrogating interferometer for optical sensing applications

D. C. C. Norman; Y. Lai; D. J. Webb

doi:10.1117/12.623270

23 May 2005 High birefringence fibre interrogating interferometer for optical sensing applications

D. C. C. Norman, Y. Lai, D. J. Webb

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623270
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

We describe the use of high birefringence fibre forming a differential path interferometer for heterodyne fibre optic sensing applications. We firstly recover a low frequency strain amplitude of 1με at 1Hz applied to a fibre Bragg grating sensor demonstrating a noise limited resolution of around 100nε/√Hz. Secondly we interrogate a Mach-Zehnder interferometer sensor using the dual wavelength technique to detect a change in the Mach-Zehnder OPD of 200μm.

Citation Download Citation

D. C. C. Norman, Y. Lai, and D. J. Webb "High birefringence fibre interrogating interferometer for optical sensing applications", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623270

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