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:
Mar. 22, 2005
Filed:
Mar. 27, 2002
Hideyuki Miyata, Kawasaki, JP;
Yoshihiko Kaitoh, Sapporo, JP;
Tadao Nakazawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention aims at providing a connecting method of optical devices capable of suppressing a periodic wavelength dependence loss and the like, due to the inter-polarization-mode interference caused when connecting a plurality of optical devices by using an optical path having a polarization-preserving characteristic, and an optical apparatus applied with the connecting method. To this end, the connecting method according to the present invention, is to connect a plurality of optical devices to one another by using an optical path of polarization-preserving type having optical characteristics in which a light is propagated along two different polarization axes for substantially equal distances. Thus, even if the polarization direction of the light input/output to/from the respective optical devices is not completely coincident with the direction of the polarization axis of the optical path, it is possible to offset the periodic wavelength dependence loss and the like caused by the inter-polarization-mode interference in the optical path, to be suppressed.