Open Access20 GHz spacing multi-wavelength generation of Brillouin-Raman fiber laser in a hybrid linear cavity
Author(s) -
Ghazaleh Mamdoohi,
A. R. Sarmani,
Ahmad Fauzi Abas,
Mohd Hanif Yaacob,
M. Mokhtar,
Mohd Adzir Mahdi
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.018724
Subject(s) - optics , brillouin scattering , brillouin zone , materials science , fiber laser , raman amplification , raman spectroscopy , wavelength , laser , optical fiber , raman scattering , optoelectronics , physics
We demonstrate a tunable multi-wavelength Brillouin-Raman fiber laser with 20 GHz wavelength spacing. The setup is arranged in a linear cavity by employing 7.2 and 11 km dispersion compensating fibers (DCF) in addition to a 30 cm Bismuth-oxide erbium doped fiber. In this experiment, for the purpose of increasing the Stokes lines, it is necessary to optimize Raman pump power and Brillouin pump power together with its corresponding wavelengths. At the specific Brillouin pump wavelength, it is found that the longer length of 11 km DCF with optimized parameters results in larger number of Stokes combs and optical signal to noise ratios (OSNRs). In this case, a total of 195 Brillouin Stokes combs are produced across 28 nm bandwidth at Brillouin pump power of -2 dBm and Raman pump power of 1000 mW. In addition, all Brillouin Stokes signals exhibit an average OSNR of 26 dB.