Optical waveguide device and module

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United States of America Patent

PATENT NO 9684129
APP PUB NO 20150205043A1
SERIAL NO

14669348

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Abstract

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In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.

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Patent Owner(s)

  • NIPPON TELEGRAPH AND TELEPHONE CORPORATION;NTT ELECTRONICS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Takanori Yokohama, JP 48 548
Itoh, Mikitaka Atsugi, JP 14 214
Nagano, Mitsuru Yokohama, JP 9 65
Shibazaki, Tomoyo Yokohama, JP 6 37
Terui, Hiroshi Yokohama, JP 23 522
Yanagisawa, Masahiro Yokohama, JP 85 1098

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