Millimeter-wave generation based on a monolithic dual-wavelength DFB laser with four phase-shifted sampled gratings and equivalent chirp technology.
Opt Lett
; 48(19): 5093-5096, 2023 Oct 01.
Article
em En
| MEDLINE
| ID: mdl-37773393
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 66.8â
GHz to 73.6â
GHz with a linewidth of less than 210â
kHz is obtained.
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MEDLINE
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En
Ano de publicação:
2023
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Article