Optimization of Brillouin optical time-domain analysis based on optical differential parametric amplification

QIN Zujun; LIANG Guoling; ZHANG Wentao; YE Song; XIONG Xianming

doi:10.7510/jgjs.issn.1001-3806.2016.02.017

In order to optimize pump pulse formats of Brillouin optical time-domain analysis based on optical differential parametric amplification (ODPA-BOTDA) and pulse-width difference between Stokes pulse and anti-Stokes pulse, by using perturbation method and small signal approximation, pulse response of probe light with Stokes and anti-Stokes pulses in the small region was obtained. After theoretical analysis and numerical verification of the performances, the results show that Stokes pulse with -phase can effectively compress Brillouin gain spectrum width and increase Brillouin signal-to-noise ratio. Meanwhile, the maximum Brillouin gain is achieved when an optimized pulse-width is 8ns. The study would be helpful for the investigation of ODPA-BOTDA in the subsequent research.

Optimization of Brillouin optical time-domain analysis based on optical differential parametric amplification

1. School of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China;

2. Guangxi Experiment Center of Information Science, Guilin University of Electronic Technology, Guilin 541004, China;

3. Guangxi Key Laboratory of Automatic Detecting Technology and Instruments, Guilin University of Electronic Technology, Guilin 541004, China

Received Date: 2015-02-02

Accepted Date: 2015-03-23

Available Online: 2016-03-25

Abstract: In order to optimize pump pulse formats of Brillouin optical time-domain analysis based on optical differential parametric amplification (ODPA-BOTDA) and pulse-width difference between Stokes pulse and anti-Stokes pulse, by using perturbation method and small signal approximation, pulse response of probe light with Stokes and anti-Stokes pulses in the small region was obtained. After theoretical analysis and numerical verification of the performances, the results show that Stokes pulse with -phase can effectively compress Brillouin gain spectrum width and increase Brillouin signal-to-noise ratio. Meanwhile, the maximum Brillouin gain is achieved when an optimized pulse-width is 8ns. The study would be helpful for the investigation of ODPA-BOTDA in the subsequent research.

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Reference (15)

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Optimization of Brillouin optical time-domain analysis based on optical differential parametric amplification

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