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Analysis of modal characteristics and thermal effects on photonic crystal fiber laser

机译：光子晶体光纤激光器的模态特性和热效应分析

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摘要

In this paper, thermo-optics effects on fiber lasers based on index-guiding photonic crystal fibers (PCFs) are studied. The modal characteristics of the PCF lasers are discussed in terms of the thermal effects. Modal analysis of PCF has been done with help of plane wave expansion and supercell lattice methods. The thermal analysis is performed by obtaining the effective index of fundamental mode and core confinement factor (CCF) when the fiber laser was pumped. The results show that PCF laser structure has negligible modal sensitivity to thermal load in comparison to conventional fiber laser. Analyzing the mode performance of the fiber laser under thermal load shows that the assumed PCF laser at 80 W/m pump power show ～500° rise in temperature and 0.34% propagation constant variation in fundamental mode index and 0.04% CCF variation in fundamental mode.
机译：本文研究了基于折射率导引光子晶体光纤（PCF）的光纤激光器的热光效应。根据热效应讨论了PCF激光器的模态特性。 PCF的模态分析已经借助平面波扩展和超晶格方法进行了。通过获得泵浦光纤激光器时的基本模式和纤芯限制因子（CCF）的有效指标来执行热分析。结果表明，与传统的光纤激光器相比，PCF激光器结构对热负荷的模态灵敏度可忽略不计。分析光纤激光器在热负荷下的模式性能，可以发现假设的PCF激光器在80 W / m的泵浦功率下，温度升高约500°，基本模式指数的传播常数变化为0.34％，基本模式的CCF变化为0.04％。

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