M. Zhou, Z. Q. Luo*, J. Z. Wang, C. C. Ye, H. Y. Fu, C. Zhang, Z. P. Cai**, and H. Y. Xu
Department of Electronic Engineering, Xiamen University, Xiamen 361005, China
*e-mail: zqluo@xmu.edu.cn
**e-mail: zpcai@xmu.edu.cn
Received December 1, 2011; in final form, December 22, 2011; published online April 3, 2012
Abstract—An all-fiber multiwavelength erbium-doped fiber laser (MEDFL) functionalized with evanescent–
field–interacting graphene is proposed and experimentally demonstrated. Graphene–polymer nanocomposites
were deposited around the waist region of a fiber taper fabricated by flame–stretching method. Using the
graphene-deposited fiber taper (GDFT) to induce four-wave mixing (FWM) as a power-equalizing device for
suppressing the unstable mode competition in MEDFL, stable multiwavelength lasing around 1530nm was
obtained with a wavelength spacing of 0.56 nm, an extinction ratio of 33 dB, and a narrow linewidth per channel
of <0.01 nm. The output spectrum of the multiwavelength laser has a good flatness, and the power fluctuation
of each wavelength is less than 1.5 dB. Comparing with the traditional methods, such evanescent–field–inter-
action based graphene stabilizing mechanism for multiwavelength generation possesses unique advantages: (1)
it can avoid the graphene thermal damage, (2) it’s a real all-fiber integrated structure, and (3) it provides a longer
interaction length for exciting FWM more efficiently.
DOI: 10.1134/S1054660X12050386
Pleiades Publishing home page | journal home page | top
If you have any problems with this server, contact webmaster.