宽带源系统中反射相移对BGOCS影响的理论分析

提出了适用于采用具有一定谱宽光源的BGOCT的理论分析方法,对不同光源谱宽通过反射相移的色散对系统输出的影响进行了理论研究.结果表明,光源谱宽在60 nm范围内,宽带系统输出相对单色系统输出变化小于万分之二.在理论研究中若不考虑光源线宽对其他光学参量的影响时,用单色光模型处理宽带系统的做法是合理的与可行的.

Theoretical Analysis of the Effect of Reflection-induced Retardance Upon an Optical Current Sensor Employed Broad-band Optical Source

The effects of different spectrum width of optical sources upon an optical current sensor via the reflection-induced retardance dispersion of the sensing head are theoretically analyzed.The results show that the variations of the output of the systems with certain spectrum width from which of the monochromatic system are less than 0.02% in the wavelength range from 6 nm to 60 nm.Therefore,the treatment of using monochromatic model to describe broad-band systems is reasonable and feasible,if the influences of source spectrum width via other optical parameters of the sensing head are not considered.