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:
Apr. 13, 1993
Filed:
Mar. 02, 1990
Shintaro Sentsui, Chiba, JP;
Akira Fujisaki, Ichibawa, JP;
Haruki Ogoshi, Yokohama, JP;
Morinobu Mizutani, Tokyo, JP;
Mitsuo Miyazaki, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
The Tokyo Electric Power Co., Incorporated, Tokyo, JP;
Abstract
A technique for identifying an optical transmission medium from a plurality of single-mode-type optical transmission media by using longitudinal middle portions of the media as an identification section by first exciting a particular optical transmission media by means of a polarized light, next applying either an electromagnetic action or a mechanical action to the particular optical transmission medium to modulate the polarized light and then identifying the particular optical transmission medium based on the deviation of the polarized plane of the polarized light.