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:
Mar. 28, 2006
Filed:
Mar. 19, 1999
Hideyuki Miyata, Kawasaki, JP;
Hiroshi Nakamoto, Kawasaki, JP;
Hiroshi Onaka, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical transmission apparatus and method for changing a rise time (t) and fall time (t) of a signal light to be transmitted, to reduce wavelength dispersion characteristics and nonlinear effect of a transmission path. A transmitter includes a ttadjusting circuit capable of adjusting tand tof a modulation signal so that the modulation signal is optimized in accordance with reception characteristics. A modulator then modulates a light with this adjusted modulation signal, and the modulated light is then transmitted to a receiver via a transmission path. Therefore, by transmitting the modulated light having changed tand t, the influence of wavelength dispersion characteristics and nonlinear effect of the transmission path can be offset, so that the waveform deterioration of signal light after transmission can be reduced.