摘要
通过对镀膜长周期光纤光栅折射率特性的分析,发现镀膜可以有效提高长周期光纤光栅的折射率灵敏度。并且耦合的包层模式次数越高,镀膜后的折射率灵敏度比没有镀膜前增加越多,对应的谐振波长的漂移也越多。基于镀膜长周期光纤光栅折射率特性的这一特点,提出应用较短周期镀膜长周期光纤光栅对乳化液浓度进行检测的方案,对这一方案进行了数值分析。
The refractive index characteristics of coated long period fiber grating were studied, and found that coated can effectively increase grating refractive index sensitivity. And the higher order of coupling, the more refractive sensitivity increases after being coated, and thus more drift of corresponding resonance wavelength would be. A scheme is put forward based on refractive properties of coated long period fiber grating, and in scheme coated long period fiber grating with relatively short period is applied to detecting concentration of emulsion.
出处
《煤矿机械》
北大核心
2013年第2期51-53,共3页
Coal Mine Machinery
关键词
长周期光纤光栅
乳化液
谐振波长
折射率灵敏度
long period fiber grating
emulsion
resonance wavelength
refractive index sensitivity
