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:
Jan. 18, 2011
Shinji Makikawa, Annaka, JP;
Toshiaki Watanabe, Annaka, JP;
Tomohiro Koyama, Chitose, JP;
Hisaya Oda, Chitose, JP;
Takuya Takahashi, Sapporo, JP;
Akio Yamanaka, Sapporo, JP;
Shinji Makikawa, Annaka, JP;
Toshiaki Watanabe, Annaka, JP;
Tomohiro Koyama, Chitose, JP;
Hisaya Oda, Chitose, JP;
Takuya Takahashi, Sapporo, JP;
Akio Yamanaka, Sapporo, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
An optical isolator including a Faraday rotator that has a high Faraday effect and a high transmission factor in a wavelength used is provided. An optical isolator comprises at least: a Faraday rotator; a polarizer arranged on a light incidence side of the Faraday rotator; and an analyzer arranged on a light exit side of the Faraday rotator, wherein the Faraday rotator consists of an oxide that contains an ytterbium oxide (YbO) with a mass ratio of 30% or more.