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Abstract

A method and apparatus is provided for pumping an active medium in an optical amplifier. The active medium substantially maximizes amplification when pumped at a pump wavelength. If the active medium is erbium, for example, a pump wavelength of 980 nm may be employed. The apparatus includes a plurality of fiber Bragg grating lasers operating in a regime of coherence collapse. Each of the lasers generate optical energy at a different wavelength, which are distributed about the pump wavelength. The apparatus also includes optical components for combining the different wavelengths to form a pump beam and a coupler for coupling the pump beam to the active medium.

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First Claim