中文摘要：

提出了一种基于单片集成放大反馈激光器在光反馈的条件下产生窄线宽激光和窄线宽微波信号的方法。在不同的注入电流下，放大反馈激光器可以实现稳定的单模和双模激射。单模激射下，器件的激射波长为1546．6nm，边摸抑制比可达54．2dB，线宽为9．59MHz。双模激射下，模式间距为0．3nm，对应拍频频率为37．6GHz，拍频线宽为4．2MHz。通过引入一个双环光纤外腔，可以将放大反馈激光器输出的光信号反馈回激光器，提高整个复合腔的光子寿命，从而压缩光信号的线宽。在合适的反馈强度下，单模工作时光信号的线宽从9．95MHz减小到2．6kHz。双模工作时拍频信号的线宽从4．2MHz减小到1．6kHz，均减小三个数量级以上。

英文摘要：

A multifunctional narrow-linewidth laser and photonic microwave generation using a monolithic integrated amplified feedback laser under delayed optical feedback is demonstrated. The device can work in signal-mode and dual-mode states by varying the injection currents of laser sections. Photonic microwave is generated by mode-beating of the two laser modes. Through a dual-loop all-optical feedback, the linewidths of both the signal-mode optical signal and photonic microwave signal are reduced by more than three orders of magnitude. Single mode operation with 2.6 kHz linewidth and photonic microwave generation at 37.97 GHz with 1.6 kHz linewidth are experimentally realized.