Optical pumping device, optical amplifier, fiber laser, and multicore fiber for optical pumping device
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United States of America Patent
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Nov 23, 2010
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app pub date -
Apr 4, 2007
filing date -
Apr 5, 2006
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Abstract
An optical pumping device is provided in which a multi-core fiber obtained by bundling up a plurality of optical fibers, which are input ports, and a double clad fiber for optical pumping are spliced through a bridge fiber composed of a double clad fiber having a tapered shape. Accordingly, it is possible to efficiently couple signal light and pumping light to the double clad fiber for optical pumping.
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