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. 12, 2010
Filed:
Aug. 22, 2007
Shinichirou Muro, Kawasaki, JP;
Hideaki Sugiya, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Etsuko Hayashi, Kawasaki, JP;
Shinichirou Muro, Kawasaki, JP;
Hideaki Sugiya, Kawasaki, JP;
Yasushi Sugaya, Kawasaki, JP;
Etsuko Hayashi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
The present invention relates to an optical transmission apparatus capable of suppressing a transitional gain variation when a number of signal wavelengths changes, and maintaining communication quality in optical signals. The optical transmission apparatus is provided with an optical power control device that varies light power of light for each wavelength component corresponding to a wavelength channel, the light including signal light and spontaneous emission light; a wavelength arrangement information obtaining unit that obtains arrangement information of the wavelength channel of the signal light; and a control unit that controls the power control device based on the arrangement information obtained at the wavelength arrangement information obtaining unit so that light power of a wavelength component of the signal light and light power of a wavelength component other than the wavelength component of the signal light become substantially equal.