Design and experimental verification of phase demodulation algorithm in VBOTDA system

Li Yongqian; Li Pan; An Qi; Li Xiaojuan

doi:10.13756/j.gtxyj.2015.05.002

您当前的位置：

首页 >

文章列表页 >

Design and experimental verification of phase demodulation algorithm in VBOTDA system

- Design and experimental verification of phase demodulation algorithm in VBOTDA system
- Study on Optical communication Issue 5, Pages: 4-7(2015)
- 作者机构：
  
  华北电力大学电子与通信工程系
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.05.002
  CLC： TN911.3
- Published：2015，
扫描看全文
[1]李永倩,李攀,安琪,李晓娟.VBOTDA系统相位解调算法设计与实验验证[J].光通信研究,2015(05):4-7.

Li Yongqian, Li Pan, An Qi, et al. Design and experimental verification of phase demodulation algorithm in VBOTDA system. [J]. (5):4-7(2015)
[1]李永倩,李攀,安琪,李晓娟.VBOTDA系统相位解调算法设计与实验验证[J].光通信研究,2015(05):4-7. DOI： 10.13756/j.gtxyj.2015.05.002.

Li Yongqian, Li Pan, An Qi, et al. Design and experimental verification of phase demodulation algorithm in VBOTDA system. [J]. (5):4-7(2015) DOI： 10.13756/j.gtxyj.2015.05.002.

摘要

深入研究了VBOTDA（矢量布里渊光时域分析）系统的原理

该系统在传统BOTDA（布里渊光时域分析）系统的基础上采用外差方案

可提高系统信噪比并获得布里渊相移信息。文章提出了一种将叠加平均去噪算法与FFT（快速傅里叶变换）分析法相结合的相位解调方法——频谱算法

进行了理论分析并搭建实验平台验证了该算法的可行性和有效性。结果表明

该算法对不同信噪比下的信号均有较好的解调效果;对幅值为0.3V且噪声标准偏差为0.5V的信号

采用1 000次叠加平均的频谱算法

相位相对测量误差可降至0.71%。

Abstract

This paper studies in-depth the principle of the Vector Brillouin Optical Time Domain Analysis（VBOTDA）system.This system adopts a heterodyne detection scheme on the basis of the conventional BOTDA system

thereby enhancing the system Signal-to-Noise Ratio（SNR）and acquiring Brillouin phase-shift information.Then

it proposes a phase demodulation method

i.e.the spectrum algorithm that combines the superimposed average denoising algorithm with the FFT analysis.Theoretical analysis and experimental demonstration verify its feasibility and effectiveness in that it is effective in demodulating signals with different SNR and for signals with 0.3 Vamplitude and noise standard deviation of 0.5 V

and the phase relative measuring error can be lowered to 0.71% when the spectrum algorithm superimposed 1 000 times is used.

关键词

受激布里渊散射VBOTDA系统相位解调频谱算法

Keywords

stimulated Brillouin scatteringVBOTDA systemphase demodulationspectrum algorithm

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research Trend of Polarization Effects in BOTDA System

The Simulation in Wavelength Characteristics Improvement of Microwave Photonic Filter

Related Author

No data

Related Institution

Department of Electronic and Communication Engineer,North China Electric Power University

School of Electronic Engineering, Xi’an University of Posts and Telecommunications

⁰