面向光接入网的光纤光栅传感数据数字化系统  

Optical Access Network Oriented Fiber Grating Sensing Data Digitalization System

作　　者：王玉宝[1] 管超[1] 

机构地区：[1]燕山大学信息科学与工程学院河北省特种光纤与光纤传感重点实验室,河北秦皇岛066004

出　　处：《激光与光电子学进展》2012年第9期156-161,共6页Laser & Optoelectronics Progress

基　　金：河北省自然科学基金(F2011203067)资助课题

摘　　要：利用现有的光纤通信网实现对光纤光栅传感网络的远程监控,既可以避免重新铺设传感信道,节约成本,又可以增加传感网组网的灵活性。提出了一种基于阵列波导光栅(AWG)的面向光接入网的光纤布拉格光栅(FBG)传感网传感数据数字化系统,系统能够快速实现对携带传感信息的FBG反射波长的数字化。分析了系统的工作原理及主要误差来源,并设计了传感数据成帧模块的结构及适于在光接入网中传输的传感数据帧结构。采用OptiSystem/Matlab协同仿真的方法对一个3×3光纤光栅传感网络进行了仿真实验,实现了在-50℃～100℃范围内精度为1℃的温度监测,能够满足日常温度监控需要。实验结果表明了该方案的可行性。Remote monitoring for optical fiber grating sensing network making use of existing optical fiber communication network can not only avoid relaying sensing channel,thereby saving the cost,but also increase the sensing network flexibility.A new sensing data digitalization system is proposed based on arrayed waveguide grating（AWG）.Quick digitalization of fiber Bragg grating（FBG） reflecting wavelengths which carry sensing information can be achieved.The operating principle and the main error source are analyzed.The sensing data framing module as well as the frame structure is designed.The simulation of a 3×3 fiber grating sensor network is carried out with OptiSystem/Matlab co-simulation approach.The accuracy of 1 ℃ in the range of-50 ℃~100 ℃ is realized,which can satisfy normal temperature monitoring requirement.The simulation results show the feasibility of the scheme.

关 键 词：光学设计 光纤传感 传感数据数字化 传感数据帧 光纤布拉格光栅 阵列波导光栅 

分 类 号：TN247[电子电信—物理电子学]