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Optical parametric circuit
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Nippon Telegraph and Telephone Corporation
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Wataru Imajuku
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Issue date Oct 25, 2005
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Nippon Telegraph and Telephone Corporation
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Optical parametric circuit
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Nippon Telegraph and Telephone Corporation
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Wataru Imajuku
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Optical fiber
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Issue date Dec 30, 2003
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The Furukawa Electric Co., Ltd.
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Shinichi Arai
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Method for manufacturing optical filter
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Issue date Nov 5, 2002
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Nippon Telegraph and Telephone Corporation
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