Scanning-free BOTDA based on ultra-fine digital optical frequency comb

Chao Jin; Nan Guo; Yuanhua Feng; Liang Wang; Hao Liang; Jianping Li; Zhaohui Li; Changyuan Yu; Chao Lu

doi:10.1364/OE.23.005277

Scanning-free BOTDA based on ultra-fine digital optical frequency comb

Chao Jin, Nan Guo, Yuanhua Feng, Liang Wang, Hao Liang, Jianping Li, Zhaohui Li, Changyuan Yu, Chao Lu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

67 Citations (Scopus)

Abstract

We realize a scanning-free Brillouin optical time domain analyzer (BOTDA) based on an ultra-fine digital optical frequency comb (DOFC) with 1.95MHz frequency spacing and 2GHz bandwidth. The DOFC can be used to reconstruct the Brillouin gain spectrum (BGS) and locate the Brillouin frequency shift (BFS) without frequency scanning and thus can improve the measurement speed about 100 times compared with the conventional BOTDA. This scanning-free BOTDA scheme has also been demonstrated experimentally with 51.2m spatial resolution over 10km standard single mode fiber (SSMF) and with resolution of 1.5°C for temperature and 43.3με for strain measurement respectively.

Original language	English
Pages (from-to)	5277-5284
Number of pages	8
Journal	Optics Express
Volume	23
Issue number	4
DOIs	https://doi.org/10.1364/OE.23.005277
Publication status	Published - 1 Jan 2015

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.23.005277

http://hdl.handle.net/10397/24940

Cite this

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abstract = "We realize a scanning-free Brillouin optical time domain analyzer (BOTDA) based on an ultra-fine digital optical frequency comb (DOFC) with 1.95MHz frequency spacing and 2GHz bandwidth. The DOFC can be used to reconstruct the Brillouin gain spectrum (BGS) and locate the Brillouin frequency shift (BFS) without frequency scanning and thus can improve the measurement speed about 100 times compared with the conventional BOTDA. This scanning-free BOTDA scheme has also been demonstrated experimentally with 51.2m spatial resolution over 10km standard single mode fiber (SSMF) and with resolution of 1.5°C for temperature and 43.3με for strain measurement respectively.",

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AU - Jin, Chao

AU - Guo, Nan

AU - Feng, Yuanhua

AU - Wang, Liang

AU - Liang, Hao

AU - Li, Jianping

AU - Li, Zhaohui

AU - Yu, Changyuan

AU - Lu, Chao

PY - 2015/1/1

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AB - We realize a scanning-free Brillouin optical time domain analyzer (BOTDA) based on an ultra-fine digital optical frequency comb (DOFC) with 1.95MHz frequency spacing and 2GHz bandwidth. The DOFC can be used to reconstruct the Brillouin gain spectrum (BGS) and locate the Brillouin frequency shift (BFS) without frequency scanning and thus can improve the measurement speed about 100 times compared with the conventional BOTDA. This scanning-free BOTDA scheme has also been demonstrated experimentally with 51.2m spatial resolution over 10km standard single mode fiber (SSMF) and with resolution of 1.5°C for temperature and 43.3με for strain measurement respectively.

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Scanning-free BOTDA based on ultra-fine digital optical frequency comb

Abstract

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