Utilizing polarization maintaining photonic crystal fiber (PM-PCF) with the low temperature coefficient of birefringence, a two-dimensional tunable and temperature-insensitive Lyot filter aiming to compensate the frequency modulation to amplitude modulation (FM-to-AM) conversion in high power laser facility is demonstrated. The Jones matrix is applied to analyze the relationship between optical characteristics of the filter and physical parameters (including amplitude ratio, phase delay, and susceptibility of the birefringence to temperature) of the polarization optical field. Both the transmission peak wavelength and extinction ratio of the spectral transmission are able to be changed simultaneously, hence, it shows more efficient FM-to-AM compensation ability. Besides, the transmission peak shift is about 18pm/°C with the PM-PCF configuration, which is about two orders of magnitude less than the normal polarization maintaining fiber (PMF) configuration. The demonstrated filter presents a practical application potential in large scale laser driven facility.

利用具有低双折射温度系数的保偏光子晶体光纤（PM-PCF），一种二维可调且对温度不敏感的Lyot滤波器，旨在补偿高功率下的调频至调幅（FM-AM）转换演示了激光设备。琼斯矩阵用于分析滤光器的光学特性与偏振光场的物理参数（包括振幅比，相位延迟和双折射对温度的敏感性）之间的关系。传输峰值波长和光谱传输的消光比都可以同时改变，因此显示出更有效的FM-AM补偿能力。此外，采用PM-PCF配置时，传输峰位移约为18pm/°C，它比正常的保偏光纤（PMF）配置小两个数量级。演示的滤波器在大规模激光驱动设备中具有实际应用潜力。