Patent ID: 7120357
Filing Date: 2006-10-10
Classification: H04J

Abstract:
1. A WDM (Wavelength Divisional Multiplex) device, wherein a client signal having a band that is greater than a band of a wavelength used for wavelength-division multiplexing is allocated to a plurality of wavelengths and is transmitted as a wavelength-division multiplexed signal, said WDM device comprising: a used-band detecting part for detecting a used-band that is used by said client signal supplied from a client device, said used-band being detected from a path layer of said client signal using set-up information contained in said path layer of said client signal; a wavelength number determining part for determining the number of the wavelengths used for the wavelength-division multiplexing from said detected used-band; and a mapping part for mapping said detected used-band onto the wavelengths used for the wavelength-division multiplexing.