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http://hdl.handle.net/10397/70760
| Title: | Single-measurement digital optical frequency comb based phase-detection Brillouin optical time domain analyzer | Authors: | Jin, C Wang, L Chen, YL Guo, N Chung, WH Au, HYY Li, ZH Tam, HY Lu, C |
Issue Date: | 17-Apr-2017 | Source: | Optics express, 17 Apr. 2017, v. 25, no. 8, p. 9213-9224 | Abstract: | A single-measurement sweep-free distributed Brillouin optical time domain analyzer (BOTDA) sensor based on phase detection is proposed and experimentally demonstrated employing digital optical frequency comb (DOFC) probe signal. Brillouin Phase Spectrum (BPS) of DOFC probe induced by Brillouin interaction is measured using coherent detection in a single acquisition, without any frequency scanning and data averaging. Single-measurement BOTDA sensor based on BPS in 10km long fiber is demonstrated with a response time of 100 mu s, which is limited only by the fiber length. The spatial resolution is 51.2m, determined by the duration of DOFC. And the Brillouin frequency shift (BFS) uncertainty is estimated to be similar to 1.5 MHz at the end of fiber under test (FUT). Benefiting from the fast response time, dynamic measurement up to 1 kHz vibration frequency has been demonstrated. | Publisher: | Optical Society of America | Journal: | Optics express | ISSN: | 1094-4087 | DOI: | 10.1364/OE.25.009213 | Rights: | © 2017 Optical Society of America © 2017 Optica Publishing Group. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. The following publication Chao Jin, Liang Wang, Yuli Chen, Nan Guo, Wenghong Chung, Hoyin Au, Zhaohui Li, Hwa-Yaw Tam, and Chao Lu, "Single-measurement digital optical frequency comb based phase-detection Brillouin optical time domain analyzer," Opt. Express 25, 9213-9224 (2017) is available at https://doi.org/10.1364/OE.25.009213. |
| Appears in Collections: | Journal/Magazine Article |
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| Guo_Single-Measurement_Digital_Optical.pdf | 2.42 MB | Adobe PDF | View/Open |
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