窄带Faraday反常色散光学滤波器

Narrow Bandwidth Faraday Anomalous Dispersion Optical Filter

研究Faraday反常色散光学滤波器,给出其理论计算过程和模拟结果.结果表明,Faraday反常色散光学滤波器有线翼和线芯透过两种工作方式,其中线翼透过单峰谱线线宽约为600MHz,透过率约为25%,线芯透过谱线线宽约为700MHz,透过率约为100%.实验结果与理论结果相符.

To obtain the weak signal light from the high background light, a narrow bandwidth Faraday anomalous dispersion optical filter （FADOF） was studied. The theoretical model for the filter was reported. The Faraday anomalous dispersion optical filters have two working modes, two side peak transmission and center peak transmission. The former work mode can get single peak transmission of 25% with a bandwidth of about 600 MHz. The other work mode can get a spectra with a transmission rate of almost 100% and a bandwith of about 700 MHz. The experimental measurements are consistent with theoretical results.