Overcoming the bandwidth limit of EDFA, one would resort to Raman amplifiers because of the possibility of much broader bandwidth by means of multi-wavelength pumping scheme. We demonstrate 100nm bandwidth Raman amplifiers using 12-wavelength-channel WDM pump laser diode unit. The gain flatness is less than □0.5dB, which is achieved through an asymmetric channel allocation of pump and without any gain equalization filters.
© 1999 Optical Society of America
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4510) Fiber optics and optical communications : Optical communications
(190.5650) Nonlinear optics : Raman effect
(190.5890) Nonlinear optics : Scattering, stimulated
Y. Emori and S. Namiki, "100nm bandwidth flat gain Raman amplifiers pumped and gain-equalized by 12-wavelength-channel WDM high power laser diodes," in Wavelength Division Multiplexing Components, D. Nolan, ed., Vol. 29 of OSA Trends in Optics and Photonics (Optical Society of America, 1999), paper 177.
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