Four-wave-mixing-assisted Brillouin fiber laser with double-Brillouin-frequency spacing

•Brillouin fiber laser with 18 channels at 0.176nm spacing is presented.•Bandpass filter suppressed the ASE noise floor producing higher OSNR at the output.•The incorporation of bandpass filter increases number of channels from 15 to 18. The generation of multiwavelength Brillouin fiber laser assist...

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Bibliographic Details
Published in:	Optical fiber technology Vol. 21; pp. 198 - 201
Main Authors:	Gan, G.K.W., Yeo, K.S., Adikan, F.R. Mahamd, Shee, Y.G.
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 01-01-2015
Subjects:	Brillouin fiber laser (BFL) Four wave mixing (FWM) Multiwavelength fiber laser Stimulating Brillouin scattering (SBS) Multiwavelength fiber laser Four wave mixing (FWM) Brillouin fiber laser (BFL) Stimulating Brillouin scattering (SBS)
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Summary:	•Brillouin fiber laser with 18 channels at 0.176nm spacing is presented.•Bandpass filter suppressed the ASE noise floor producing higher OSNR at the output.•The incorporation of bandpass filter increases number of channels from 15 to 18. The generation of multiwavelength Brillouin fiber laser assisted by four wave mixing has been demonstrated. A maximum of 18 channels of laser Stokes lines are generated at a Brillouin Pump (BP) of 190mW (∼22.5dBm). The multiple peaks have a wavelength spacing of 0.176nm (∼20GHz). A tunable optical bandpass filter is incorporated to the design to suppress up to 6dB of the noise floor hump exhibited at the multiwavelength laser spectrum while limiting the laser peaks attenuation thereby providing a much cleaner and better OSNR.
ISSN:	1068-5200 1095-9912
DOI:	10.1016/j.yofte.2014.11.011