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:
Jan. 25, 1994
Filed:
Feb. 01, 1993
Takashi Miyazaki, Kawasaki, JP;
Haruo Fujiwara, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
Disclosed is an optical amplification repeating system having at least one repeater disposed in the middle of an optical transmission line connecting two terminal stations in which a light beam output from an optical amplifier is split into at least two split beams, one of the split beams is converted into an electric signal by optical/electrical conversion and the signal-to-noise ratio is detected on the basis of the electric signal. With such arrangement, the signal-to-noise ratio in the repeater can be measured in an in-service state, i.e., while the system is in operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile