NDLI: Effect of nonlinear gain on the phase noise of Y-branch lasers

Content Provider	Springer Nature Link
Author	Liu, Fan Zhou, Rui Zhao, Jialin Shi, Kai Yu, Yonglin Barry, Liam P.
Copyright Year	2017
Abstract	Effect of nonlinear gain on the phase noise of modulated grating Y-branch (MGY) lasers is investigated by experiments and simulations. The phase noise is first characterized by measuring the frequency modulation noise spectrum of the MGY laser, and some interesting phenomena are observed. In order to understand the underlying physic mechanism of those phenomena, simulations are performed with taking Langevin noise sources and nonlinear gain terms into account. Simulated results show that, in the presence of the nonlinear gain, fluctuations of side-modes can bring excess phase noise to the lasing mode, especially when the side-modes are on the long-wavelength side of the main mode. Furthermore, it has been found that the phase noise hopping phenomenon can be induced by a bi-stable state of the laser, which is also closely related to the nonlinear gain. The investigation is helpful for explaining the complicated phase noise characteristics of the MGY laser.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	03068919
Journal	Optical and Quantum Electronics
Volume Number	49
Issue Number	3
e-ISSN	1572817X
Language	English
Publisher	Springer US
Publisher Date	2017-02-21
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nonlinear gain Phase noise Y-branch lasers TLM Rate equations Optics, Lasers, Photonics, Optical Devices Electrical Engineering Characterization and Evaluation of Materials Computer Communication Networks
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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