Image Simulation Program for Mode-Related Fiber Bragg Grating Reflection and Transmission in Optical Waveguides

This article presents a general image simulation program for studying mode-related fiber Bragg grating reflection and transmission in optical waveguides. The simulation program employs numerical methods such as coupled-mode theory and transfer matrix algorithms to model light propagation through waveguide structures. Key functions include mode profile calculation, grating period implementation, and reflectance/transmittance spectrum generation. Through this simulation program, researchers can investigate transmission characteristics of different waveguide modes and analyze the reflection/transmission effects of fiber Bragg gratings. The program helps in better understanding mode behavior in optical waveguides and can be utilized for designing and optimizing the performance of optical waveguides and fiber Bragg gratings. Typical implementation involves MATLAB or Python coding with specialized photonics toolboxes for solving waveguide equations and grating responses. Therefore, this image simulation program holds significant application value in optical waveguide and fiber Bragg grating research.