APPARATUS AND METHOD FOR COLORLESS OPTICAL SWITCH

• Main Authors: ZHANG, GUANGYONG, SHEN, SHUQIANG
• Format: Patent
• Language: English; French; German
• Published: 26.09.2012
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MULTIPLEX COMMUNICATION; SELECTING

The present invention discloses a device and a method for colorless optical switching, where the device includes: a demultiplexer, configured to demultiplex the 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 the multiple beams of light with single wavelength output by the first optical cross unit, drop the light that needs to be dropped from multiple beams of light with single wavelength output by the first optical cross unit, receive the light added by the local node, and output the light that needs to pass in 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. The optical switch device and method provided in the embodiments of the present invention feature colorlessness, low insertion loss, and low costs.