Patent ID: 6834135
Filing Date: 2004-12-21
Classification: H04Q

Abstract:
An optical switching system, comprising:a signal input unit operable to input an optical packet a signal that includes an optical label signal converted by a direct modulation method from an electric label signal that has a frequency that corresponds to a destination of the optical packet signal; an optical-to-electrical conversion unit operable to convert the optical packet signal, which has passed through an optical filter that allows only signals with wavelengths within a predetermined range to pass through itself, into an electric signal; an extracting unit operable to extract the electric label signal from the electric signal; an electric power level detecting unit operable to detect an electric power level of the extracted electric label signal; a port determining unit operable to determine, based on the detected electric power level, a port to which the optical packet signal is to be output; and a signal output unit operable to output the optical packet signal to the determined port.