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Demonstration of side coupling between high power laser diode array and double-clad fiber using sub-wavelength grating

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Abstract

A sub-wavelength gold-embedded silica binary grating for side coupling light emission from a 976-nm high-power laser diode array into the 400-μm-diameter inner cladding of a double-clad fiber was demonstrated with near 50% overall coupling efficiency.

© 2011 Optical Society of America

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