Compensation of phase error in optical frequency-domain reflectometry using delay-matched sampling

Qian Zhou; Weilin Xie; Zongyang Xia; Hongxiao Shi; Yi Dong; Weisheng Hu

doi:10.1117/1.OE.53.7.074103

11 July 2014 Compensation of phase error in optical frequency-domain reflectometry using delay-matched sampling

Qian Zhou, Weilin Xie, Zongyang Xia, Hongxiao Shi, Yi Dong, Weisheng Hu

Author Affiliations +

Optical Engineering, Vol. 53, Issue 7, 074103 (July 2014). https://doi.org/10.1117/1.OE.53.7.074103

Abstract

We proposed and experimentally demonstrated a delay-match sampling method to measure and compensate the laser phase error in optical frequency-domain reflectometry system. By using the error signal extracted from a simple auxiliary Mach-Zehnder interferometer with only a 10-ns delay, the laser phase error is effectively compensated. Considerable improvement is achieved in spatial resolution from 200 m to 7 cm at a measurement distance over 10 times the round-trip laser coherence length.

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Qian Zhou, Weilin Xie, Zongyang Xia, Hongxiao Shi, Yi Dong, and Weisheng Hu "Compensation of phase error in optical frequency-domain reflectometry using delay-matched sampling," Optical Engineering 53(7), 074103 (11 July 2014). https://doi.org/10.1117/1.OE.53.7.074103

Published: 11 July 2014

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