The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 2014
Filed:
May. 26, 2009
Shunichi Soma, Atsugi, JP;
Takashi Goh, Atsugi, JP;
Yasuaki Hashizume, Atsugi, JP;
Masahiro Yanagisawa, Atsugi, JP;
Takanori Ishikawa, Yokohama, JP;
Mitsuru Nagano, Yokohama, JP;
Atsushi Murasawa, Yokohama, JP;
Masayuki Okuno, Yokohama, JP;
Shunichi Soma, Atsugi, JP;
Takashi Goh, Atsugi, JP;
Yasuaki Hashizume, Atsugi, JP;
Masahiro Yanagisawa, Atsugi, JP;
Takanori Ishikawa, Yokohama, JP;
Mitsuru Nagano, Yokohama, JP;
Atsushi Murasawa, Yokohama, JP;
Masayuki Okuno, Yokohama, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NTT Electronics Corporation, Yokohama-shi, Kanagawa, JP;
Abstract
Excess optical power in a waveguide device is appropriately terminated. According to one embodiment of the present invention, the waveguide device comprises a termination structure filled with a light blocking material for terminating light from the end section of a waveguide. This termination structure can be formed by forming a groove on an optical waveguide by removing the clad and core, and filling the inside of that groove with a material attenuating the intensity of the light (light blocking material). In this manner, light that enters into the termination structure is attenuated by the light blocking material, and influence on other optical devices as a crosstalk component can be suppressed. With such termination structure, not only the influence on optical devices integrated on the same substrate, but also the influence on other optical devices directly connected to that substrate can be suppressed.