Patent ID: 8494316

Claim:
A device for colorless optical switching, comprising: a demultiplexer, configured to demultiplex input multi-wavelength light into multiple beams of light with single wavelength; a first optical cross unit, configured to receive the multiple beams of light with single wavelength, obtained by the demultiplexer in the way of demultiplexing, and output the multiple beams of light with single wavelength through target ports; an optical switch array, configured to receive multiple beams of light with single wavelength output by the first optical cross unit, drop light that needs to be dropped, from the multiple beams of light with single wavelength output by the first optical cross unit, to a local node, receive light added by the local node, and output light that needs to pass, from the multiple beams of light with single wavelength output by the first optical cross unit and the light added by the local node; and a combiner, configured to combine the light output by the optical switch array.