cascaded FWM in fiber cavity

余弦高斯光束图像，可以看到不同传输距离的光强，并且采用分数傅里叶讨论方法！(Cosine Gauss beam image)

可以仿真倾斜光纤光栅的透射光谱和反射光谱(The transmission spectrum and reflection spectrum of tilted fiber grating can be simulated.)

布拉格光纤光栅解调代码，用于布拉格光纤光栅的光频域反射技术的传感解调(Grating demodulation)

Matlab链接Comsol程序，计算光纤模式，保存数据，优化参数(Matlab link Comsol program, calculating the modes of optical fiber, save data, optimize parameters)

光学领域的菲涅耳反射及透射，发射率，透射率等详细程序(Fresnel reflection and transmission in the field of optical, emissivity, transmittance and detailed procedure)

说明：  利用LP01模式来对单模光纤模场直径与归一化频率的关系进行简单计算(Calculating the relationship between mode field diameter and normalized frequency of single mode fiber)

说明：  该算法是最原始的GS算法，可实现利用频域已知振幅，空域已知振幅对空域相位的复原，另包含GS算法原始文献。(The algorithm is the original GS algorithm, which can be used to recover the spatial phase with the known amplitude in the frequency domain and the spatial domain, and include the original literature of the GS algorithm.)

说明：  搞死光束的基本性质及其通过博透镜的变换和高斯光束的聚焦(The basic properties of dead beam and gaussian beams through the lens of bo's transformation and focus)

说明：  光纤参量放大器增益特性的仿真研究 包括增益带宽 峰值增益饱和增益等(FOPA The simulation study of gain characteristics of optical fiber parametric amplifier includes peak gain saturation gain of gain bandwidth, etc.)

利用LP01模式来对单模光纤模场直径与归一化频率的关系进行简单计算(Calculating the relationship between mode field diameter and normalized frequency of single mode fiber)