基于压力槽可调谐长周期光纤光栅模块的设计

Design of multi-channel tunable long period fiber grating module

提出一种基于机械微弯变形法的能够同时生成不同谐振波长的多个长周期光纤光栅的制作方案。仿真分析了该方案中各参数(如光栅有效长度、倾斜角度以及外界应力)变化对长周期光纤光栅损耗峰深度和谐振波长的影响。结果显示,长周期光纤光栅的损耗峰深度主要受光栅有效长度和压力影响,而倾斜角度大幅度改变谐振波长位置。

A multi-channel tunable mechanically induced long-period fiber gratings （LPFGs） scheme is present, which can induce several LPFGs with different resonance wavelength simultaneously. LPFGs spectra characteristics are simulated to find the influence of these parameters, such as grating length, tilt angle and the pressure on the plate. The simulation results show that the transmission loss peak mainly depends on both the grating length and the pressure, while tilt angle factor dominates the resonant wavelength.