So, in this paper, we analyzed the self-mixing interference effect to linewidth in the LD with multiple external reflectors and multiple feedback. 研究多外腔自混合干涉系统对激光器的影响，有利于对激光器线宽的控制。
This paper presents a theoretical study of the tunability of frequency selective filter extended cavity semiconductor lasers. 本文分析选频滤波器负载外腔半导体激光器的调谐特性。
