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:
Jun. 05, 2012
Filed:
Dec. 06, 2007
Optical wavelength multiplexing system, optical wavelength multiplexing method, and computer product
Makoto Ohtou, Fukuoka, JP;
Akira Yamamoto, Fukuoka, JP;
Tatsuo Nagayoshi, Fukuoka, JP;
Katsumi Sugawa, Fukuoka, JP;
Hideaki Sugiya, Kawasaki, JP;
Makoto Ohtou, Fukuoka, JP;
Akira Yamamoto, Fukuoka, JP;
Tatsuo Nagayoshi, Fukuoka, JP;
Katsumi Sugawa, Fukuoka, JP;
Hideaki Sugiya, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical wavelength multiplexing system includes transmission-side and reception-side optical wavelength multiplexers, and terminal devices, which are connected to each other by optical fiber cables. Optical wavelength converters in the transmission-side optical wavelength multiplexers are connected to ports respectively. The optical wavelength converter converts an input optical signal into an arbitrary preset wavelength to generate a converted optical signal. The port has a predetermined wavelength preset therein. Each optical power level of input converted optical signals is compared with each optical power level of optical signals of respective wavelengths set in the ports. When a difference is detected in the comparison result, it is determined that an optical wavelength converter is incorrectly connected to the port.