Supermode-noise suppression using a nonlinear Fabry–Pérot filter in a harmonically mode-locked fiber ring laser


A simple efficient method for stabilizing a harmonically mode-locked fiber ring laser is proposed. In this method, a linear optical filter and a nonlinear Fabry–Pérot filter in which the refractive index is optical intensity dependent are located in the laser cavity. The linear filter is used to select a fixed lasing wavelength, and the Fabry–Pérot filter introduces a negative all-optical feedback mechanism that is able to suppress pulse-to-pulse amplitude fluctuations in the laser cavity. The scheme was experimentally demonstrated using a fiber Bragg grating as the linear filter and a laser diode biased below threshold as the nonlinear Fabry–Pérot, and stable harmonically mode-locked pulses with a supermode noise suppression ratio >55 dB were obtained.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © 2002 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Appl. Phys. Lett. 81, 4520 (2002) and may be found at
Uncontrolled Keywords: noise ,suppression,harmonically ,mode-locked fibre ring laser
Publication ISSN: 1077-3118
Last Modified: 02 May 2024 07:08
Date Deposited: 15 Dec 2014 16:25
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://scitatio ... .1063/1.1528732 (Publisher URL)
PURE Output Type: Article
Published Date: 2002-12-09
Authors: Zhao, Donghui
Lai, Yicheng
Shu, Xuewen
Zhang, Wei (ORCID Profile 0000-0002-3584-8541)
Bennion, Ian



Version: Published Version

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