Patent ID: 8554079

Claim:
An office all-optical wavelength conversion unit, comprising: at least two office 3-port wavelength division multiplexers, at least two office optical wavelength converters and an office wavelength division multiplexer, wherein; an uplink multiplexing port of each office 3-port wavelength division multiplexer respectively connects with an uplink demultiplexing port of the office wavelength division multiplexer; a downlink demultiplexing port of each office 3-port wavelength division multiplexer respectively connects with an input port of a respective office optical wavelength converter; an output port of each office optical wavelength converter connects with a downlink multiplexing port of the office wavelength division multiplexer; and a third port of each office 3-port wavelength division multiplexer is configured to connect with an optical module respectively; and wherein: the office 3-port wavelength division multiplexers are configured to respectively multiplex and demultiplex optical signals with different wavelengths in uplink and downlink directions and the office optical wavelength converters are configured to convert downlink optical signals with the same wavelength emitted by the optical modules and received from the office 3-port wavelength division multiplexers into the optical signals with different wavelengths, and to send the optical signals with different wavelengths to the office wavelength division multiplexer for multiplexing.