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, 1991
Filed:
Apr. 09, 1990
Applicant:
Inventors:
Hiroyuki Taya, Sakura, JP;
Mikio Yoshinuma, Yachiyo, JP;
Takeshi Yamada, Sakaura, JP;
Kenji Nishide, Kamakura, JP;
Fumio Suzuki, Sanbu, JP;
Hirohisa Fujimoto, Yokohama, JP;
Ryozo Yamauchi, Sakura, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; G02B / ; C03B / ;
U.S. Cl.
CPC ...
350 9615 ; 350 9629 ; 65-5 ;
Abstract
The present invention discloses a manufacturing method for polarization maintaining optical fiber couplers which are used for joining light signals and at optical fiber branch points. The disclosed manufacturing method employs polarization maintaining optical fibers, and describes a method for mutually aligning the stress applying parts of such optical fibers so that polarized optical signals are maintained in the polarized state when transiting such couplers.