Spectral Linewidth Analysis for Square Microlasers

Mode characteristics and spectral linewidths are investigated for single-mode and dual-mode AlGaInAs/InP square microlasers. For a single-mode square microlaser with a side length of 22 μm, connected with a 2-μm-wide waveguide, a linewidth of 20 MHz is obtained by means of a non-zero delayed self-he...

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Bibliographic Details
Published in:IEEE photonics technology letters 2017-11, Vol.29 (22), p.1931-1934
Main Authors: Weng, Hai-Zhong, Huang, Yong-Zhen, Ma, Xiu-Wen, Wang, Fu-Li, Liao, Ming-Long, Yang, Yue-De, Xiao, Jin-Long
Format: Article
Language:English
Subjects:
correlation
Delays
heterodyning
Laser modes
Masers
Measurement by laser beam
narrow linewidth
Optical feedback
Optical fibers
Square microlasers
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Summary:Mode characteristics and spectral linewidths are investigated for single-mode and dual-mode AlGaInAs/InP square microlasers. For a single-mode square microlaser with a side length of 22 μm, connected with a 2-μm-wide waveguide, a linewidth of 20 MHz is obtained by means of a non-zero delayed self-heterodyne method. Dual-mode square microlaser linewidths are also analyzed using an optical heterodyne, and a strong mode correlation is experimentally demonstrated. Furthermore, we successfully realize the narrow-linewidth microlaser and microwave signal generation through a dual-loop optical feedback technique.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2017.2752232