Stress-location measurement along an optical fiber by synthesis of optical coherence function

Kazuo Hotate; Xueliang Song; Zuyuan He

doi:10.1117/12.372971

9 December 1999 Stress-location measurement along an optical fiber by synthesis of optical coherence function

Kazuo Hotate, Xueliang Song, Zuyuan He

Proceedings Volume 3860, Fiber Optic Sensor Technology and Applications; (1999) https://doi.org/10.1117/12.372971
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

A triangle-shape optical coherence function is synthesized, and is applied to construct a system for real-time stress- location measurement along an optical fiber. We utilize a polarization maintaining fiber (PMF) for the sensing element, and the coupling from one eigen polarization mode to the other by the stress is used as the sensing mechanism. The delay difference between the two eigen polarization modes linearly corresponds to the stress-position on PMF, which is measured as the degree of coherence linearly changing from 1 to 0, like a triangle. By extracting the coherence value, the stress point is figured out in real time.

Citation Download Citation

Kazuo Hotate, Xueliang Song, and Zuyuan He "Stress-location measurement along an optical fiber by synthesis of optical coherence function", Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); https://doi.org/10.1117/12.372971

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