LIGHT SELF-ROUTING SWITCH

摘要

PURPOSE:To provide a light self-routing switch executing the self-routing via the light signal itself without converting it into the electric signal. CONSTITUTION:The cell light inputted via an in-highway 1 is split into multiple parts by the branch section 2a of a branch wavelength conversion section 2, and wavelength conversion is made based on the tag light at a wavelength conversion section 2b. A wavelength selection section 3 has light filters with different passing wavelengths corresponding to an out-highway respectively, and the cell light is sent out via the light filter having the wavelength of the cell light converted with the wavelength by the wavelength conversion section 2b as the passing wavelength. The cell light can be returned to the original wavelength by a wavelength conversion section 4 and sent out to the out- highway.