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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
【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。
【Abstract】 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 right-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;
【Key words】 polarization dependent loss; fiber Bragg grating; 1/4 wave plate; magnetic field;
【Key words】 polarization dependent loss; fiber Bragg grating; 1/4 wave plate; magnetic field;
【基金】 陕西省自然科学基金资助(2011JM8038)
- 【文献出处】 光通信技术 ,Optical Communication Technology , 编辑部邮箱 ,2012年01期
- 【分类号】TN253
- 【下载频次】84