150 km fast BOTDA based on the optical chirp chain probe wave and Brillouin loss scheme

Yongkang Dong; Benzhang Wang; Chao Pang; Dengwang Zhou; Dexin Ba; Hongying Zhang; Xiaoyi Bao

doi:10.1364/ol.43.004679

150 km fast BOTDA based on the optical chirp chain probe wave and Brillouin loss scheme

Yongkang Dong, Benzhang Wang, Chao Pang, Dengwang Zhou, Dexin Ba, Hongying Zhang, Xiaoyi Bao

Research output: Contribution to journal › Article › peer-review

60 Scopus citations

Abstract

Distributed long-range Brillouin optical time domain analysis (BOTDA) is an extremely time-consuming sensing scheme, which requires frequency mapping of the Brillouin spectrum and a large number of average times. Here, we propose a fast long-range BOTDA based on the optical chirp chain (OCC) probe wave and Brillouin loss scheme. The OCC-modulated probe wave is enabled by cascading fast-frequency-changing microwave chirp segments head-to-tail, which covers a large frequency range around the anti-Stokes frequency relative to the pump wave. The combination of the OCC technique and Brillouin loss scheme provides several advantages, i.e., fast measurement, a high Brillouin threshold, no additional amplification scheme, and freedom from the nonlocal effect. In the experiment, 6 m spatial resolution, 3.2 s measurement time, and 3 MHz measurement precision were achieved over a 150 km single-mode fiber.

Original language	English
Pages (from-to)	4679-4682
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	19
DOIs	https://doi.org/10.1364/ol.43.004679
State	Published - 1 Oct 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Optical Society of America.

Funding

Funding. National Key Scientific Instrument and Equipment Development Project of China (2017YFF0108700); National Natural Science Foundation of China (NSFC) (61575052); Natural Science Foundation of Heilongjiang Province (QC2015087).

Funders	Funder number
National Natural Science Foundation of China	61575052
Natural Science Foundation of Heilongjiang Province	QC2015087
National Key Scientific Instrument and Equipment Development Projects of China	2017YFF0108700

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title = "150 km fast BOTDA based on the optical chirp chain probe wave and Brillouin loss scheme",

abstract = "Distributed long-range Brillouin optical time domain analysis (BOTDA) is an extremely time-consuming sensing scheme, which requires frequency mapping of the Brillouin spectrum and a large number of average times. Here, we propose a fast long-range BOTDA based on the optical chirp chain (OCC) probe wave and Brillouin loss scheme. The OCC-modulated probe wave is enabled by cascading fast-frequency-changing microwave chirp segments head-to-tail, which covers a large frequency range around the anti-Stokes frequency relative to the pump wave. The combination of the OCC technique and Brillouin loss scheme provides several advantages, i.e., fast measurement, a high Brillouin threshold, no additional amplification scheme, and freedom from the nonlocal effect. In the experiment, 6 m spatial resolution, 3.2 s measurement time, and 3 MHz measurement precision were achieved over a 150 km single-mode fiber.",

author = "Yongkang Dong and Benzhang Wang and Chao Pang and Dengwang Zhou and Dexin Ba and Hongying Zhang and Xiaoyi Bao",

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AU - Dong, Yongkang

AU - Wang, Benzhang

AU - Pang, Chao

AU - Zhou, Dengwang

AU - Ba, Dexin

AU - Zhang, Hongying

AU - Bao, Xiaoyi

PY - 2018/10/1

Y1 - 2018/10/1

N2 - Distributed long-range Brillouin optical time domain analysis (BOTDA) is an extremely time-consuming sensing scheme, which requires frequency mapping of the Brillouin spectrum and a large number of average times. Here, we propose a fast long-range BOTDA based on the optical chirp chain (OCC) probe wave and Brillouin loss scheme. The OCC-modulated probe wave is enabled by cascading fast-frequency-changing microwave chirp segments head-to-tail, which covers a large frequency range around the anti-Stokes frequency relative to the pump wave. The combination of the OCC technique and Brillouin loss scheme provides several advantages, i.e., fast measurement, a high Brillouin threshold, no additional amplification scheme, and freedom from the nonlocal effect. In the experiment, 6 m spatial resolution, 3.2 s measurement time, and 3 MHz measurement precision were achieved over a 150 km single-mode fiber.

AB - Distributed long-range Brillouin optical time domain analysis (BOTDA) is an extremely time-consuming sensing scheme, which requires frequency mapping of the Brillouin spectrum and a large number of average times. Here, we propose a fast long-range BOTDA based on the optical chirp chain (OCC) probe wave and Brillouin loss scheme. The OCC-modulated probe wave is enabled by cascading fast-frequency-changing microwave chirp segments head-to-tail, which covers a large frequency range around the anti-Stokes frequency relative to the pump wave. The combination of the OCC technique and Brillouin loss scheme provides several advantages, i.e., fast measurement, a high Brillouin threshold, no additional amplification scheme, and freedom from the nonlocal effect. In the experiment, 6 m spatial resolution, 3.2 s measurement time, and 3 MHz measurement precision were achieved over a 150 km single-mode fiber.

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150 km fast BOTDA based on the optical chirp chain probe wave and Brillouin loss scheme

Abstract

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