Study on 16-channel optical fiber Bragg grating demodulation systems

Zhang Yongjun; Zhao Zhengang; Yang Jie; Li Yingna; Xu Junfei; Wang Yuan; Li Chuan

doi:10.13756/j.gtxyj.2015.06.006

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Study on 16-channel optical fiber Bragg grating demodulation systems

- Study on 16-channel optical fiber Bragg grating demodulation systems
- Study on Optical communication Issue 6, Pages: 30-33(2015)
- 作者机构：
  
  1. 昆明理工大学信息工程与自动化学院
  2. 西南交通大学希望学院机械与电气工程系
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2015.06.006
  CLC： TP212
- Published：2015，
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[1]张勇军,赵振刚,杨洁,李英娜,许俊飞,王渊,李川.16通道光纤布拉格光栅解调系统的研究[J].光通信研究,2015(06):30-33+68.

Zhang Yongjun, Zhao Zhengang, Yang Jie, et al. Study on 16-channel optical fiber Bragg grating demodulation systems. [J]. (6):30-33(2015)
[1]张勇军,赵振刚,杨洁,李英娜,许俊飞,王渊,李川.16通道光纤布拉格光栅解调系统的研究[J].光通信研究,2015(06):30-33+68. DOI： 10.13756/j.gtxyj.2015.06.006.

Zhang Yongjun, Zhao Zhengang, Yang Jie, et al. Study on 16-channel optical fiber Bragg grating demodulation systems. [J]. (6):30-33(2015) DOI： 10.13756/j.gtxyj.2015.06.006.

摘要

鉴于单通道解调系统一次可检测的光栅波长数目有限

同时为兼顾FBG（光纤布拉格光栅）解调系统与上位机通信的稳定性与高速性

结合波分复用与空分复用技术

研制了多通道、多通信端口的FBG解调系统。通过控制16路光开关的光路切换

可实现对16通道FBG传感网的空分复用

对各通道传感器中心波长进行解调。测试结果表明

解调系统中心波长分辨率为1pm

一次采集光栅波长信息的时间为620ms

16个光通道的FBG传感信息更新最短时间不大于10s

可对约200只光纤光栅传感器进行有效监测。

Abstract

As a single-channel demodulation system can detect only a limited number（up to a dozen）of grating wavelengths a time and it is necessary to take into account the stability and high speed of both the Fiber Bragg Grating（FBG）demodulation system and host computer communications

a multi-channel

multi-communication-port FBG demodulation system is developed using the Wavelength Division Multiplexing（WDM）and Spatial Division Multiplexing（SDM）technologies.By controlling the lightpath switching of a 16-channel optical switch

the SDM of the 16-channel FBG sensing network and the demodulating of the center wavelength in each channel sensor can be realized.Test results show that the center wavelength resolution of the demodulation system is 1pm and the time for collecting the granting wavelength information once is 620 ms

the minimum time for updating 16-channel FBG sensor information is not longer than 10 s.In addition

it is possible to effectively monitor about200 fiber grating sensors.

关键词

光纤布拉格光栅解调系统16通道光开关波分复用空分复用

Keywords

FBGdemodulation system16channelsoptical switchWDMSDM

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