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:
Jul. 23, 2002
Filed:
Mar. 22, 2000
Izumi Yokota, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The optical amplifier according to the present invention includes a first optical amplifier for a first band (e.g., conventional band: C band), a second optical amplifier for a second band (e.g., long-wavelength band: L band), an optical demultiplexer and an optical multiplexer for connecting the first and second optical amplifiers in parallel, and a control unit for controlling the first and second optical amplifiers so that the optical power at an output port becomes constant. With this configuration, band broadening can be attained by adopting the first and second optical amplifiers, and the configuration can be simplified by using the control unit commonly for the first and second optical amplifiers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile