基于压电陶瓷与光纤光栅的快速激光波长锁定系统

Chinese Journal of Lasers(2020)

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Abstract
窄线宽、大调谐带宽的本振激光种子源是空间相干光通信系统中的核心组件之一,通过窄线宽种子源结合外电光调制和窄带光栅滤波的方案,可以实现窄线宽和大调谐带宽,但通过温度控制的光纤光栅难以适应空间动平台间存在的高速多普勒频移.采用压电陶瓷控制的光纤光栅,结合梯度下降算法的闭环系统,实现了光纤光栅和注入激光波长的相对锁定.所提方案可适应40 MHz/s以上的空间多普勒频移.
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Key words
optical communications, spatial coherent optical communication, piezoelectric ceramics, fiber Bragg grating
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