摘要
分析了光纤FabryPerot谐振腔的工作原理及其工作点的选择问题,推导了谐振腔的光学相位灵敏度与精细度的关系,给出了理论公式及曲线,并与光纤MathZehnder干涉进行了对比,指出了在相位灵敏度上两者的巨大差距,证明了光纤FabryPerot干涉的独特优点介绍了光纤FabryPerot干涉的实验系统,提出了检测及计算FabryPerot谐振腔有效精细度的方法。
The operational principle for resonant cavity of fiber optic Farby-Perot is analyzed, in addition to the selection for its operating point. The relationship of optical phase sensitivity of resonant cavity and its fineness was deduced. The theoretical formula and curve are presented. The above system is compared with the interference system of fiber optic Math-Zehnder, the great difference of the two interference system is pointed out as phase sensitivity considered. The unique advantages of fiber optic Fabry-Perot interference system are demonstrated. The transmittance curve of fiber optic Fabry-Perot interference and fiber optic Math-Zehnder interference were calculated and plotted with Mathcad software. The experimental system of fiber optic Fabry-Perot interference as well as the transmittance curve pictures taken in experiment is introduced. A method was given, with which the effective fineness calculation can be achieved. The experimental pictures was well in accordance with theoretical cures.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2005年第3期428-430,共3页
Acta Photonica Sinica
关键词
光学干涉
光纤传感器
精细度
灵敏度
Optical interference
Fiber optic sensor
Fineness
Sensitivity
