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:
Oct. 26, 1999
Filed:
Jun. 13, 1997
Keisuke Imai, Kawasaki, JP;
Yasunori Nagakubo, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical transmitter and an optical communication system, each for providing a good transmission characteristic of a main signal and allowing suppression of SBS (stimulated Brillouin scattering). The optical transmitter comprises a light source for outputting a carrier beam, an optical modulator for modulating the carrier beam based on a main signal and sending out an optical signal into an optical fiber transmission line, an oscillator for outputting a low frequency signal, a first circuit for frequency or phase modulating the carrier beam based on the low frequency signal, and a second circuit for superposing an opposite phase signal having a phase opposite to that of the low frequency signal with the main signal and supplying a resulting signal to the optical modulator.