Measuring the linewidth enhancement factor and optical feedback level factor of semiconductor lasers based on optical feedback self-mixing interferometry

本项目旨在开发一种高性能解决方案，用于测量半导体激光器（SLs）的线宽增强因子（LEF）和光反馈自混合（OFSM）系统的光反馈电平因子C。具体研究成果包括：(1)光反馈自混合效应的新模型；(2)基于所提模型测量LEF和C的新方法；(3)改进所提方法性能的信号处理算法；(4)基于新模型和算法的OFSM系统原型。

This project aims to develop a high performance solution for the challenging problem of measuring the linewidth enhancement factor (LEF) of semiconductor lasers (SLs) and the optical feedback level factor, C, for the optical feedback self-mixing (OFSM) systems. Specific outcomes of the research include (1) a new model for an optical feedback self-mixing effect, (2) a new approach for measuring LEF and C based on the proposed model, (3) signal processing algorithms for improving the performance of the proposed approach, and (4) an OFSM system prototype based on the new model and algorithms.