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:
Jul. 24, 2012
Filed:
Sep. 16, 2009
Hiroshi Ishikawa, Tsukuba, JP;
Toshifumi Hasama, Tsukuba, JP;
Hitoshi Kawashima, Tsukuba, JP;
Kenji Kintaka, Tsukuba, JP;
Masahiko Mori, Tsukuba, JP;
Hisato Uetsuka, Hitachi, JP;
Hiroyuki Tsuda, Yokohama, JP;
Keisuke Sorimoto, Yokohama, JP;
Hiroshi Ishikawa, Tsukuba, JP;
Toshifumi Hasama, Tsukuba, JP;
Hitoshi Kawashima, Tsukuba, JP;
Kenji Kintaka, Tsukuba, JP;
Masahiko Mori, Tsukuba, JP;
Hisato Uetsuka, Hitachi, JP;
Hiroyuki Tsuda, Yokohama, JP;
Keisuke Sorimoto, Yokohama, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Keio University, Tokyo, JP;
Abstract
An optical waveguide-type wavelength domain switch includes a waveguide-type multi/demultiplexing device laminate comprising three or more laminated waveguide-type multi/demultiplexing devices, a lens system positioned on a demultiplex side of the waveguide-type multi/demultiplexing device laminate, and a reflective optical phase-modulating cell positioned on an opposite side of the waveguide-type multi/demultiplexing device laminate to the lens system. The lens system includes a lens alignment composed of plural lenses in one-to-one correspondence with the waveguide-type multi/demultiplexing devices and having a light-collecting or collimating function in the lens-aligning direction, an image-magnifying optical system having an N:1 (N>1) image-magnifying function arranged on the optical phase-modulating cell side of the lens alignment, an f-f lens (Y) arranged on the optical phase-modulating cell side of the image-magnifying optical system, and having a light-collecting or collimating function in the same direction as the lens-aligning direction of the lens alignment, and an f-f lens (X) having a light-collecting or collimating function in a perpendicular direction to the lens-aligning direction of the lens alignment.