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Wavelength Conversion Device
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Optical Amplifier
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H01 - BASIC ELECTRIC ELEMENTS
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Wavelength Conversion Device
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Publication number 20220004081
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Publication date Jan 6, 2022
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Nippon Telegraph and Telephone Corporation
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G02 - OPTICS
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Wavelength Conversion Apparatus
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Publication number 20210405502
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Publication date Dec 30, 2021
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Nippon Telegraph and Telephone Corporation
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G02 - OPTICS
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Optical Signal Transmitter
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Publication date Feb 11, 2021
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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LASER LIGHT SOURCE
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Publication number 20070297465
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Publication date Dec 27, 2007
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NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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Junji Yumoto
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G02 - OPTICS
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Laser light source
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Publication number 20060013270
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Publication date Jan 19, 2006
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Nippon Telegraph and Telephone Corporation
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