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:
Feb. 01, 2005
Filed:
May. 09, 2003
Akira Haraguchi, Yokohama, JP;
Takeo Komiya, Yokohama, JP;
Maki Ikeji, Yokohama, JP;
Takashi Sasaki, Yokohama, JP;
Yasushi Fujimura, Yokohama, JP;
Akira Haraguchi, Yokohama, JP;
Takeo Komiya, Yokohama, JP;
Maki Ikeji, Yokohama, JP;
Takashi Sasaki, Yokohama, JP;
Yasushi Fujimura, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
An optical devicehas a substrate, whereas bare fibersexposed from a coated optical fiber tapeby removing a coatingfrom its middle part are secured to the upper face part of the substrate. In the substrate, a transverse grooveis formed obliquely with respect to an axis of the bare fibersso as to traverse core partsof the bare fibers. An optical memberfor reflecting a part of signal light transmitted through the bare fibersis inserted in the transverse groove. A support memberis provided on the upper side of the bare fibers, whereas a support surfaceof the support memberis provided with photodetectorsfor detecting light reflected by the optical member. The support surfaceof the support memberis inclined with respect to the upper face of the substrate, whereby the light entrance surfaceof each photodetectoris inclined by a predetermined angle with respect to the upper face of the substrate. Such a configuration realizes an optical device which can lower the polarization dependence of received light in the photodetectors.