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Title: Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry

We demonstrate that multiple-site sensing along an optical fiber can be done with incoherent continuous-wave light. Here, using a broadband low-coherence noise source, a slow detector, and an optical modulator, we construct a single-arm frequency-shifted interferometer (SA-FSI) capable of simultaneously sensing multiple weak-reflection sites distributed either in parallel or in series along fiber links. By scanning the driving frequency of an electro-optic amplitude modulator in the range of 2.7–3.2 GHz at steps of 41.7 KHz, we demonstrate a spatial resolution of 0.3 m and a measurement range of over 1 km.
Authors:
 [1] ;  [1] ; ORCiD logo [1] ;  [1]
  1. Univ. of Toronto, ON (Canada). Dept. of Electrical and Computer Engineering
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 55; Journal Issue: 21; Journal ID: ISSN 0003-6935
Publisher:
Optical Society of America (OSA)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE; Natural Sciences and Engineering Research Council of Canada (NSERC)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; Fiber optics sensors; Fiber optics; Multiplexing
OSTI Identifier:
1408610

Zhang, Yiwei, Ye, Fei, Qi, Bing, and Qian, Li. Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry. United States: N. p., Web. doi:10.1364/AO.55.005526.
Zhang, Yiwei, Ye, Fei, Qi, Bing, & Qian, Li. Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry. United States. doi:10.1364/AO.55.005526.
Zhang, Yiwei, Ye, Fei, Qi, Bing, and Qian, Li. 2016. "Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry". United States. doi:10.1364/AO.55.005526. https://www.osti.gov/servlets/purl/1408610.
@article{osti_1408610,
title = {Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry},
author = {Zhang, Yiwei and Ye, Fei and Qi, Bing and Qian, Li},
abstractNote = {We demonstrate that multiple-site sensing along an optical fiber can be done with incoherent continuous-wave light. Here, using a broadband low-coherence noise source, a slow detector, and an optical modulator, we construct a single-arm frequency-shifted interferometer (SA-FSI) capable of simultaneously sensing multiple weak-reflection sites distributed either in parallel or in series along fiber links. By scanning the driving frequency of an electro-optic amplitude modulator in the range of 2.7–3.2 GHz at steps of 41.7 KHz, we demonstrate a spatial resolution of 0.3 m and a measurement range of over 1 km.},
doi = {10.1364/AO.55.005526},
journal = {Applied Optics},
number = 21,
volume = 55,
place = {United States},
year = {2016},
month = {7}
}