Zero-broadening SBS slow light propagation in an optical fiber using two broadband pump beams
Optics Express, Vol. 16, Issue 11, pp. 8067-8076 (2008)
http://dx.doi.org/10.1364/OE.16.008067
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Abstract
A new method of tailoring stimulated Brillouin scattering (SBS) gain spectrum for slow light propagation is proposed by use of two Gaussian-shaped broadband pump beams with different powers and spectral widths. The central frequency interval between the two pump beams are carefully set to be two inherent Brillouin frequency shift, ensuring that the gain spectrum of one pump has the same central frequency with the loss spectrum of the other one. Different gain profiles are obtained and analyzed. Among them a special gain profile is found that ensures a zero-broadening of the signal pulse independent of the Brillouin gain. This is owing to the compensation between the positive gain-dependent broadening and the negative GVD (group velocity dispersion) dependent broadening. The relationship of two pump beams is also found for constructing such a gain profile. It provides us a new idea of managing the broadening of SBS-based slow pulse by artificially constructing and optimizing the profile of gain spectrum.
© 2008 Optical Society of America
OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(290.5900) Scattering : Scattering, stimulated Brillouin
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: February 7, 2008
Revised Manuscript: March 24, 2008
Manuscript Accepted: April 7, 2008
Published: May 20, 2008
Citation
Shihe Wang, Liyong Ren, Yu Liu, and Yasuo Tomita, "Zero-broadening SBS slow light propagation in
an optical fiber using two broadband pump
beams," Opt. Express 16, 8067-8076 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-11-8067
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