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:
Nov. 29, 2011
Filed:
Jul. 29, 2008
Yoshito Kachita, Kawasaki, JP;
Ichiro Nakajima, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Ryosuke Goto, Kawasaki, JP;
Yoshito Kachita, Kawasaki, JP;
Ichiro Nakajima, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Ryosuke Goto, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A WDM signal monitoring system includes a measuring unit that measures power levels in a plurality of predetermined wavelength bands about a wavelength division multiplex signal, a waveform determination unit that determines an approximate waveform of each channel from each bit rate and modulation system of a plurality of channels which forms a wavelength division multiplex signal, and an approximation unit that determines a power level and a wavelength of each channel by approximating the power level in a plurality of wavelength bands which the measuring unit measured with the approximate waveform of each channel which the waveform determination unit determined.