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. 27, 2000
Filed:
Jun. 19, 1998
Junichi Kinoshita, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kanagawa-ken, JP;
Abstract
A transmitter and a receiver for wavelength division multiplexing optical transmission need no multiplexer and can be made compact and manufactured easily while promising a high reliability of a system using them. By using second-order Bragg diffraction gratings to form the output mechanism, a plurality of DFB laser-type elements can be integrated so that their optical outputs adversely affect each other. Therefore, a plurality of lasers can be arranged coaxially to form a light source for wavelength division multiplexing optical transmission without using a multiplexer. By using the same mechanism on the part of a receiver, a demultiplexer can be omitted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile