Long-distance fiber optic white-light sensing system with synthetic sources

Yun-Jiang Rao; David A. Jackson

doi:10.1117/12.255341

25 October 1996 Long-distance fiber optic white-light sensing system with synthetic sources

Yun-Jiang Rao, David A. Jackson

Proceedings Volume 2839, Fiber Optic and Laser Sensors XIV; (1996) https://doi.org/10.1117/12.255341
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A long-distance fiber-optic white-light displacement sensing system, using a synthesized source generated by combining the outputs from two low coherence sources, is demonstrated. As the wavelengths of both sources are compatible with standard 1.3 micrometer single-mode telecommunication fiber, allowing the peak of the central fringe in interferogram to be determined precisely, a measurement range to resolution of better than 10⁴:1 over a remote distance of 3.3 km has been achieved. Optimum synthetic source is also proposed to further reduce the SNR requirement for identification of the peak of the central fringe. It is expected that such a system could find applications in long-distance, remote, and absolute measurements for quasi-static parameters.

Citation Download Citation

Yun-Jiang Rao and David A. Jackson "Long-distance fiber optic white-light sensing system with synthetic sources", Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, (25 October 1996); https://doi.org/10.1117/12.255341

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