OPTICAL ELEMENT, OPTICAL MODULE, AND OPTICAL TRANSMISSION SYSTEM

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United States of America Patent

APP PUB NO 20170293085A1
SERIAL NO

15462055

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Abstract

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An optical element includes a distributed Bragg reflector, wherein the distributed Bragg reflector includes a first-order diffraction grating of a first-order period disposed in a central region, and second-order diffraction gratings of a second-order period having a coupling coefficient smaller than a coupling coefficient of the first-order diffraction grating and disposed in both end regions between which the central region is located.

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Patent OwnerAddressTotal Patents
FUJITSU LIMITEDKAWASAKI18047

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