Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

SNR dependence of measurement stability of heterodyne phase-sensitive optical time-domain reflectometry

Not Accessible

Your library or personal account may give you access

Abstract

Phase-sensitive optical time-domain reflectometry ($\Phi$-OTDR) implements distributed vibration measurements by demodulation of vibration-induced phase of Rayleigh backscattered light waves (RBLs), and suffers from measurement instability. The weak intensities of RBLs and the resulting low signal-to-noise ratios (SNRs) of intensity measurements are the dominating factors that cause the instability of vibration measurements. In this paper, dependence of the measurement stability of heterodyne $\Phi$-OTDR on the SNR of the intensity measurement is investigated analytically and experimentally. An analytical solution of the probability density function of the demodulated phase as a function of SNR is obtained through rigorous derivation, and the dependence of the measurement stability on the SNR is investigated by analyzing the probability density function distribution of the demodulated phase. Both the theoretical predictions and experimental results reveal the impact of SNR on the measurement stability of heterodyne $\Phi$-OTDR. This study fulfills the $\Phi$-OTDR theory and would lead to an effective approach to stabilizing vibration quantization.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Low-noise and high-sensitivity Φ-OTDR based on an optimized dual-pulse heterodyne detection scheme

Zewu Ju, Zhijie Yu, Qingkai Hou, Kang Lou, Mo Chen, Yang Lu, and Zhou Meng
Appl. Opt. 59(7) 1864-1870 (2020)

Integrated principal component analysis denoising technique for phase-sensitive optical time domain reflectometry vibration detection

Atubga David Atia Ibrahim, Shengtao Lin, Ji Xiong, Jialin Jiang, Yun Fu, and Zinan Wang
Appl. Opt. 59(3) 669-675 (2020)

Image-matching assisted dual-frequency phase-sensitive optical time domain reflectometry

Ba Dexin, Lamessa A. Ayana, Wang Ying, Wang Long, Chu Qi, and Dong Yong kang
Appl. Opt. 60(34) 10632-10637 (2021)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (30)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Metrics

Select as filters


Select Topics Cancel
© Copyright 2022 | Optica Publishing Group. All Rights Reserved