Affiliation:
1. Nanjing University of Posts and Telecommunications
2. Nanjing University
3. Institute of Semiconductors, Chinese Academic of Sciences
Abstract
A dual-wavelength DFB laser array based on four phase-shifted grating and equivalent chirp technology is first proposed, fabricated, and experimentally demonstrated. The dual-wavelength emitting is achieved by symmetrically introducing two π phase shifts into a chirped four phase-shifted sampled grating cavity. Meanwhile, the beating signal of the dual-wavelength output is stabilized by applying an electro-absorption modulator integrated at the rear of the cavity. Under different grating chirp rates, a series of RF signals from 66.8 GHz to 73.6 GHz with a linewidth of less than 210 kHz is obtained.
Funder
Engineering and Physical Sciences Research Council
Subject
Atomic and Molecular Physics, and Optics
Cited by
1 articles.
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