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. 09, 2007
Filed:
Jul. 19, 2004
Katsuji Yamaguchi, Kawasaki, JP;
Kenichi Shinmura, Kawasaki, JP;
Masato Nagayama, Kawasaki, JP;
Tadayuki Takada, Kawasaki, JP;
Katsuji Yamaguchi, Kawasaki, JP;
Kenichi Shinmura, Kawasaki, JP;
Masato Nagayama, Kawasaki, JP;
Tadayuki Takada, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A terminal apparatus by which, even where BER data, for example, of an optical signal of an existing wavelength cannot be utilized, the optical output powers of the existing wavelength and an extension wavelength can be adjusted in a short period of time while eliminating quality degradation of the existing circuit. The terminal apparatus includes a level controlling section for controlling a total optical output power of an existing wavelength signal light and an extension wavelength signal light to a fixed level, a monitoring unit capable of monitoring the optical output power for each wavelength, and a controller for controlling the optical output power of the extension wavelength signal light so that the optical output power of the existing wavelength signal light monitored by the monitoring unit may not be lower than a minimum permissible optical output power.