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. 06, 2001
Filed:
Feb. 23, 1998
Shin-ichirou Harasawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
To improve the OSNR on a receiving side it is necessary to control pre-emphasis, and further to automatically control the pre-emphasis. Furthermore, when carrying out wavelength-division multiplexing, it is also necessary to control wavelength. The optical spectrum of signal lights is detected in both a transmitting terminal station and a receiving terminal station, a transmitting side spectrum detection result and a receiving side spectrum detection result are compared, and the levels and wavelengths of signal lights to be transmitted are controlled.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile