非对称3×3干涉型传感器解调系统设计  

Design of demodulation system based on asymmetry 3×3 interferometric sensor

作　　者：张诚[1] 王金海[1,2] 陈才和[2] 张波[1] 岳泉[1] 

机构地区：[1]天津工业大学信息与通信工程学院 [2]天津大学精密仪器与光电子工程学院,光电信息技术科学教育部重点实验室,天津300072

出　　处：《光电工程》2007年第11期135-140,共6页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(40274047)

摘　　要：针对3×3耦合器输出信号的非对称特性,研究并推导了改进型的3×3耦合器解调算法。根据该算法,使用Labview设计了信号处理软件。实现了对非对称3×3耦合器输出信号的软件解调和频谱分析。通过实验,系统的频率测量范围可达10～1000Hz,相位测量范围为-10～10rad,相位灵敏度为0.5V/rad。Based on the asymmetry characteristic of 3×3 coupler output signal, the improved demodulation arithmetic of 3×3 coupler was studied and deduced. The signal processing software was designed by Labview, and it could achieve software demodulation of asymmetric 3×3 coupler output signal and spectrum analysis. Testing result shows that the frequency measured range is 10-1000Hz and the phase measured range is -10 - 10 rad. The phase sensitivity of the system is 0.5V/rad. This system has high precision, large measured range and convenience to observe waveform and spectrum.

关 键 词：非对称3×3耦合器 相位解调 LABVIEW 软件解调 干涉型传感器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]