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. 31, 1995
Filed:
Sep. 09, 1993
Akihiro Ooka, Osaka, JP;
Kenji Kawamura, Osaka, JP;
Yozo Nishiura, Osaka, JP;
Katsuaki Itoh, Osaka, JP;
Takaki Iwashita, Osaka, JP;
Yasuhiko Nishi, Osaka, JP;
Noritaka Kuroda, Hisai, JP;
Hayato Hasegawa, Hisai, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical fiber type polarizer comprises a first optical fiber constituted by a birefringent optical fiber wound at a predetermined winding radius and having winding start and end fixed to each other by an adhesive, the first optical fiber having short extra portions respectively extending from the winding start and end, and the length of each of the short extra porions being at least as small as the predetermined winding radius. The optical fiber type polarizer further comprises a second optical fiber spliced to one of the short extra portions of the first optical fiber, and a third optical fiber spliced to the other of the short extra portions of the first optical fiber.