A compact graphene Q-switched erbium-doped fiber laser using optical circulator and tunable fiber Bragg grating

doi:10.1088/1674-1056/23/2/024209

Abstract We demonstrate a passively Q-switched tunable erbium-doped fiber laser (EDFL) based on graphene as a saturable absorber (SA). A three-port optical circulator (OC) and a strain-induced tunable fiber Bragg grating (TFBG) are used as the two end mirrors in an all-fiber linear cavity. The Q-switched EDFL has a low pump threshold of 23.8 mW. The pulse repetition rate of the fiber laser can be widely changed from 9.3 kHz to 69.7 kHz by increasing the pump power from 23.8 mW to 219.9 mW. The minimum pulse duration is 1.7 μs and the highest pulse energy is 25.4 nJ. The emission wavelength of the laser can be tuned from 1560.43 nm to 1566.27 nm by changing the central wavelength of the strain-induced TFBG.

Keywords: fiber lasers Q-switching wavelength tunable operation graphene saturable absorber

Received: 15 September 2013
Revised: 04 November 2013
Accepted manuscript online:

PACS:	42.55.Wd	(Fiber lasers)
	42.60.Gd	(Q-switching)
	42.79.Dj	(Gratings)
	78.67.Wj	(Optical properties of graphene)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61077017 and 61378028), the Program for New Century Excellent Talents in University, China (Grant Nos. NCET-11-0069 and NCET-10-0291), and the 111 Project (Grant No. B13042).

Corresponding Authors: Li He-Ping
E-mail: oehpli@uestc.edu.cn

About author: 42.55.Wd; 42.60.Gd; 42.79.Dj; 78.67.Wj

Cite this article:

Li He-Ping (李和平), Xia Han-Ding (夏汉定), Wang Ze-Gao (王泽高), Zhang Xiao-Xia (张晓霞), Chen Yuan-Fu (陈远富), Zhang Shang-Jian (张尚剑), Tang Xiong-Gui (唐雄贵), Liu Yong (刘永) A compact graphene Q-switched erbium-doped fiber laser using optical circulator and tunable fiber Bragg grating 2014 Chin. Phys. B 23 024209

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A compact graphene Q-switched erbium-doped fiber laser using optical circulator and tunable fiber Bragg grating

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