Numerical simulations indicate that, for specific coupling coefficient and cavity length value, the DFB lasers are more sensitive to optical feedback than the Fabry-Perot semiconductor laser.

• 从分析的结果中可以得出，满足一定参数条件的分布反馈激光器比一般的F-P腔的半导体激光器对外部光反馈更加敏感。