Phase-coded Brillouin optical correlation domain analysis with 2-mm resolution based on phase-shift keying

Dexin Ba; Yue Li; Jialiang Yan; Xiaopei Zhang; Yongkang Dong

doi:10.1364/OE.27.036197

Phase-coded Brillouin optical correlation domain analysis with 2-mm resolution based on phase-shift keying

Dexin Ba, Yue Li, Jialiang Yan, Xiaopei Zhang, Yongkang Dong

Harbin Institute of Technology

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

29 Scopus citations

Abstract

We report a phase-coded Brillouin optical correlation-domain analysis (BOCDA) based on phase-shift keying (PSK), in which the pseudo-random binary sequence (PRBS) phase coding is realized using a Mach-Zehnder modulator (MZM). Unlike the conventional phase-coded BOCDA using a phase modulator, which suffers from the non-rectangular transition in the encoded phase, the PSK can realize perfect phase switches between 0 and π with zero-width edges. It is not sensitive to the bandwidth of the modulator and the power of the radio-frequency modulation signal. Numerical simulations and experimental results prove that it can effectively suppress the Brillouin amplification in the off-peak positions. In experiment, a 2-mm spatial resolution sensing is realized using only a 20-GHz bandwidth MZM.

Original language	English
Pages (from-to)	36197-36205
Number of pages	9
Journal	Optics Express
Volume	27
Issue number	25
DOIs	https://doi.org/10.1364/OE.27.036197
State	Published - 9 Dec 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Funding

National Natural Science Foundation of China (61975045, 61605034, 61575052); China Postdoctoral Science Foundation (2016M591531); National Key Scientific Instrument and Equipment Development Projects of China (2017YFF0108700).

Funders	Funder number
National Natural Science Foundation of China	61975045, 61605034, 61575052
China Postdoctoral Science Foundation	2016M591531
National Key Scientific Instrument and Equipment Development Projects of China	2017YFF0108700

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10.1364/OE.27.036197

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abstract = "We report a phase-coded Brillouin optical correlation-domain analysis (BOCDA) based on phase-shift keying (PSK), in which the pseudo-random binary sequence (PRBS) phase coding is realized using a Mach-Zehnder modulator (MZM). Unlike the conventional phase-coded BOCDA using a phase modulator, which suffers from the non-rectangular transition in the encoded phase, the PSK can realize perfect phase switches between 0 and π with zero-width edges. It is not sensitive to the bandwidth of the modulator and the power of the radio-frequency modulation signal. Numerical simulations and experimental results prove that it can effectively suppress the Brillouin amplification in the off-peak positions. In experiment, a 2-mm spatial resolution sensing is realized using only a 20-GHz bandwidth MZM.",

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Phase-coded Brillouin optical correlation domain analysis with 2-mm resolution based on phase-shift keying

Abstract

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