@inproceedings{8f406f6568f74de48c3fe5eaca2e066e,
title = "Coherent-detection-assisted BOTDA system without averaging using single-sideband modulated local oscillator signal",
abstract = "A novel setup for coherent-detection-assisted Brillouin optical time domain analysis (BOTDA) is proposed and demonstrated. Performance enhancement is enabled by a power-controllable local oscillator (LO) generated using single-side-band (SSB) modulation. Through employing a commercial coherent receiver and polarization diversity scheme, the Brillouin gain traces carried on a stable intermediate frequency (IF) are obtained in real time without any averaging and processed by digital signal processing (DSP) without the need of ultra-narrow optical band pass filter. A spatial resolution of 4 m and frequency uncertainty of 1.473 MHz are achieved over 40 km sensing range using a single scan.",
keywords = "BOTDA, Coherent detection, Digital signal processing, Distributed fiber sensor, Stimulated Brillouin scattering",
author = "Nan Guo and Liang Wang and Chao Jin and Tao Gui and Kangping Zhong and Xian Zhou and Jinhui Yuan and Changyuan Yu and Tam, {Hwa Yaw} and Chao Lu",
note = "Publisher Copyright: {\textcopyright} 2017 SPIE.; 25th International Conference on Optical Fiber Sensors, OFS 2017 ; Conference date: 24-04-2017 Through 28-04-2017",
year = "2017",
month = apr,
doi = "10.1117/12.2265293",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Libo Yuan and Youngjoo Chung and Wei Jin and Byoungho Lee and John Canning and Kentaro Nakamura",
booktitle = "25th International Conference on Optical Fiber Sensors",
address = "United States",
}