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. 29, 2011
Filed:
Aug. 27, 2008
Teijiro Ori, Saitama, JP;
Koichiro Masuko, Yachiyo, JP;
Teijiro Ori, Saitama, JP;
Koichiro Masuko, Yachiyo, JP;
Fujikura Ltd., Tokyo, JP;
Abstract
An optical transceiver is provided which includes: a bi-directional optical subassembly; a printed circuit board which transmits and receives light for the bi-directional optical subassembly; and an outer casing which covers the bi-directional optical subassembly and the printed circuit board. The bi-directional optical subassembly includes: a laser diode; a photodiode; a stem on which to laser diode and the photo diode are mounted; a cap, which cooperates with the stern to seal the laser diode and the photodiode; and a crosstalk reducing structure for reducing optical and/or electric crosstalk. The crosstalk reducing structure may include a layer which is formed on an inner surface of the cap and is able to absorb an infrared ray.