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:
Sep. 15, 1998
Filed:
Nov. 15, 1996
Applicant:
Inventor:
Yukinobu Nakabayashi, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H01S / ; G02F / ;
U.S. Cl.
CPC ...
359341 ; 359337 ; 359343 ;
Abstract
A rare earth-doped optical fiber is supplied with a input signal light and an excitation light, so that the input signal light is amplified to be supplied to an output as an amplified signal light. At this time, an intensity of an amplification of spontaneous emission (ASE) is detected to be compared with a predetermined intensity, thereby to provide a difference signal. An amount of the excitation light is controlled by the difference signal to equalize the ASE to the predetermined intensity.
Nakabayashi, Yukinobu. (1998). Optical fiber amplifier and optical transmission system using the same (U.S. Patent No. 5808785). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5808785
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile