Abstract

In this letter, we propose and experimentally demonstrate an indium phosphide (InP) based monolithically integrated photonic microwave generator using feedback-cavities integrated dual distributed Bragg reflector laser diodes. Stable photonic microwaves are measured with a narrow 3 dB linewidth (<10 kHz). Furthermore, the kilohertz-scale narrow linewidth photonic microwaves have a widely tuning range of 1 GHz to 2.275 THz.

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