Overcoming EDFA slow transient effects in a combined Golay coding and coherent detection BOTDA sensor | Zendy

Can Liu | Zendy; Lianshan Yan | Zendy; Zonglei Li | Zendy; Yin Zhou | Zendy; Xinpu Zhang | Zendy; Wei Pan | Zendy; Bin Luo | Zendy

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Overcoming EDFA slow transient effects in a combined Golay coding and coherent detection BOTDA sensor

Author(s) -

Can Liu,

Lianshan Yan,

Zonglei Li,

Yin Zhou,

Xinpu Zhang,

Wei Pan,

Bin Luo

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.382276

Subject(s) - brillouin zone , optical amplifier , optics , brillouin scattering , amplifier , optical fiber , binary golay code , fiber optic sensor , erbium , time domain , optical circulator , materials science , physics , optoelectronics , laser , computer science , cmos , algorithm , computer vision

Firstly, Erbium-doped fiber amplifier (EDFA) served as pre-amplifier may distort Brillouin gain spectrum (BGS) in coded Brillouin optical time domain analysis sensor. Here, we found that the EDFA has negligible impact on the shape of Brillouin phase spectrum (BPS). Experimental results show that a ∼5.4 MHz Brillouin frequency shift error caused by EDFA has been avoided by using BPS instead of BGS. Secondly, after eliminating phase fluctuation caused by optical fiber, the combination of Golay coding and coherent detection has been realized.

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