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:
Jun. 18, 2013
Filed:
Feb. 19, 2009
Daisuke Ogawa, Yokohama, JP;
Takashi Saida, Yokohama, JP;
Yuji Moriya, Yokohama, JP;
Shigeo Nagashima, Yokohama, JP;
Yasuyuki Inoue, Atsugi, JP;
Shin Kamei, Atsugi, KR;
Daisuke Ogawa, Yokohama, JP;
Takashi Saida, Yokohama, JP;
Yuji Moriya, Yokohama, JP;
Shigeo Nagashima, Yokohama, JP;
Yasuyuki Inoue, Atsugi, JP;
Shin Kamei, Atsugi, KR;
NTT Electronics Corporation, Kanagawa, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
An arrayed waveguide grating optical multiplexer/demultiplexer according to the present invention including an input channel waveguide, an input slab waveguide, an arrayed waveguide, a polarization dependence eliminating means, an output slab waveguide, a temperature compensating means, and an output channel waveguide is characterized in that the temperature compensating means compensates for the temperature dependence of the optical path lengths in the channel waveguides of the arrayed waveguide, and the polarization dependence eliminating means eliminates the temperature dependence and the polarization dependence of the arrayed waveguide grating optical multiplexer/demultiplexer at the same time.