Ultra-low sampling resolution technique for heterodyne phase-OTDR based distributed acoustic sensing

Yu, Fei-Hong1; Liu, Shuaiqi1,2; Shao, Liyang1,3; Xu, Weijie1; Xiao, Dongrui1; Zhao, Fang1; Hu, Jie1; Lin, Weihao1,2; Wang, Guoqing4; Wang, Weizhi3; Wang, Feng5; Liu, Huanhuan1; Shum, Perry Ping1

2022-07-15

10.1364/OL.456925

OPTICS LETTERS   影响因子和分区

0146-9592

1539-4794

Phase-sensitive optical time-domain reflectometry (Phi-OTDR) based on heterodyne detection is widely used for its simple structure and high signal-to-noise ratio (SNR). However, the large amount of raw data of Phi-OTDR places a heavy burden on the storage device and also limits the transferability of the data. In this Letter, we propose an ultra-low sampling resolution technique to solve the data storage problem in heterodyne Phi-OTDR. Experimental results show that the optical phase variations induced by external vibrations can be successfully demodulated from the 1-bit-resolution raw data, and a vibration SNR of 58.03 dB is achieved. In addition, this work also reveals that a data acquisition device with extremely low sampling resolution is sufficient for heterodyne Phi-OTDR, signifying that the cost of the system can be further decreased. (C) 2022 Optica Publishing Group

SCI ; EI

英语

第一 ; 通讯

Department of Natural Resources of Guangdong Province[22] ; Guangdong Science and Technology Department[2021A0505080002]

Optics

Optics

WOS:000826474100001

Optica Publishing Group

20222912385364

Data acquisition ; Optical heterodyning ; Signal to noise ratio ; Time domain analysis ; Virtual storage

Information Theory and Signal Processing:716.1 ; Data Storage, Equipment and Techniques:722.1 ; Data Processing and Image Processing:723.2 ; Mathematics:921

PHYSICS

Web of Science

1.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
2.Univ Macau, State Key Lab Analog & Mixed Signal VLSI, Taipa 999078, Macau, Peoples R China
3.Peng Cheng Lab, Shenzhen 518005, Peoples R China
4.Shenzhen Inst Informat Technol, Dept Microelect, Shenzhen 518172, Peoples R China
5.Nanjing Univ, Coll Engn & Appl Sci, Nanjing 210023, Peoples R China

Yu, Fei-Hong,Liu, Shuaiqi,Shao, Liyang,et al. Ultra-low sampling resolution technique for heterodyne phase-OTDR based distributed acoustic sensing[J]. OPTICS LETTERS,2022,47(14):3379-3382.

Yu, Fei-Hong.,Liu, Shuaiqi.,Shao, Liyang.,Xu, Weijie.,Xiao, Dongrui.,...&Shum, Perry Ping.(2022).Ultra-low sampling resolution technique for heterodyne phase-OTDR based distributed acoustic sensing.OPTICS LETTERS,47(14),3379-3382.

Yu, Fei-Hong,et al."Ultra-low sampling resolution technique for heterodyne phase-OTDR based distributed acoustic sensing".OPTICS LETTERS 47.14(2022):3379-3382.