Dual-Wavelength Brillouin Ring-Cavity Fiber Laser
with Tunable Channel Spacing¹

X. Zhou^a, X. Miao^a, G. Liang^a, S. Yuan^a, L. Jiang^a, and T. Wang^{a, b,} *

^a College of Communication Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China

^b Key Laboratory of RF Circuits and System of Ministry of Education, Hangzhou Dianzi University,

Hangzhou 310018, China

*e-mail: tianshuw@hdu.edu.cn

Received December 5, 2011; in final form, December 7, 2011; published online April 3, 2012

Abstract—We experimentally demonstrate a dual-wavelength Brillouin fiber laser configured a pre-amplified
Brillouin pump and FBG filter in a ring-cavity. The Brillouin laser can generate 21 Brillouin Stokes with 0.084
nm spacing, the first-Stoke has a peak power of 2.19 dBm. By adjusting the TLS wavelength and FBG’s reflec-
tion wavelength from circulating in the ring-cavity, the generated output dual-wavelength is stabile and the
channel spacing is tunable, the widest and narrowest channel spacing obtained is approximately 1.12 nm (139
GHz) and 0.084 nm (10.5 GHz).

DOI: 10.1134/S1054660X12050398

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