Multipoint sensing with a low-coherence source using single-arm frequency-shifted interferometry [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 5,526-5,530 : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory
United States. Department of Energy
Natural Sciences and Engineering Research Council Canada
United States. Department of Energy. Office of Scientific and Technical Information
- 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.
- Published through SciTech Connect.
Applied Optics 55 21 ISSN 0003-6935; APOPAI AM
Yiwei Zhang; Fei Ye; Bing Qi; Li Qian.
- Funding Information:
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