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Multi-wavelength Raman Fiber Lasers for Raman Amplification and Dynamic Gain Flattening

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Abstract

Raman amplification has emerged as a useful tool in extending the span lengths and capacity of fiber optics transmission systems. A major advantage of Raman amplification is the ability to provide gain over a wide optical bandwidth with several pumps at various wavelengths and optical powers. Wavelength and polarization multiplexed semiconductor laser diodes are frequently used to provide broadband amplification. However, multi-wavelength Raman fiber lasers offer an alternate and economical Raman pump technology. These lasers utilize a variety of fiber optic technologies and exploit the fiber optic inhomogeneous Raman gain medium to generate high power depolararized radiation that can be partitioned in a controlled manner amongst various selected wavelengths.

© 2003 Optical Society of America

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