Fast Phase Demodulation Method for Heterodyne Phase-Sensitive OTDR

Shuaiqi Liu1; Feihong Yu1; Liyang Shao1; Mang I Vai2

10.1109/ACP55869.2022.10088917

2022

Asia Communications and Photonics Conference (ACP) / International Conference on Information Photonics and Optical Communications (IPOC)

2162-108X

978-1-6654-8156-4

2022 Asia Communications and Photonics Conference (ACP)

157-159

5-8 Nov. 2022

Shenzhen, China

345 E 47TH ST, NEW YORK, NY 10017 USA

IEEE

We propose a fast and effective phase demodulation method based on the spatial phase shifting technique for heterodyne phase-sensitive OTDR. An orthogonal signal can be directly obtained using the spatially shifted original signal, without the need for digital I/Q demodulation or Hilbert transform. The proposed method has experimentally demonstrated at least 30% phase demodulation speed improvement with no deterioration in the demodulation results compared to the conventional methods. This technique may prove useful for practical distributed acoustic sensing applications, because of its simpler computation process and faster computation speed.

distributed acoustic sensing distributed optical fiber sensors heterodyne detection phase demodulation phase-sensitive optical time-domain reflectometry

第一

英语

CPCI-S

Department of Natural Resources of Guangdong Province[22]

Engineering ; Optics ; Telecommunications

Engineering, Electrical & Electronic ; Optics ; Telecommunications

WOS:001000552100044

IEEE

1.Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China
2.State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau S.A.R., China

Shuaiqi Liu,Feihong Yu,Liyang Shao,et al. Fast Phase Demodulation Method for Heterodyne Phase-Sensitive OTDR[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2022:157-159.