一种新的基于光纤光栅测电磁场的解调系统  

A new demodulation system based on fiber grating of measuring electromagnetic field

作　　者：李慧博[1] 葛海波[1] 赵彦彦[1] 王松[2] 

机构地区：[1]西安邮电学院电子工程学院,西安710121 [2]西安邮电学院通信与信息工程学院,西安710121

出　　处：《光通信技术》2012年第1期49-52,共4页Optical Communication Technology

基　　金：陕西省自然科学基金资助(2011JM8038)

摘　　要：提出了一种新的使用光纤光栅测电磁场的方法,依据磁场与光纤光栅偏振相关损耗(PDL)成正比的原理,运用1/4波片转化左、右旋圆偏振光为线偏振光,根据所检测出的两偏振光光强推算出磁场强度,并论证了其可行性。This paper puts forward a new method of measuring magnetic field by using fiber grating, Based on the magnetic field proportional to the polarization dependent loss （ PDL ） of optical fiber grating, Using a 1/4 wave plate, transformation left-hand and fight-hand circularly polarized light into linearly polarized light, According to the detected two polarized light intensity calculate the magnetic field strength, and proves its feasibility.

关 键 词：偏振相关损耗(PDL) 光纤光栅 1/4波片 磁场 

分 类 号：TN919[电子电信—通信与信息系统]