Multi-dimensional optical cross-connect switching system

A multidimensional optical cross-connect switching system, comprising:

• an optical fiber layer switching unit, constructed to be matched with an optical transport network through input and output optical fibers, for cross-connect switching the input/output optical fibers, extracting some of the input optical fibers to its upper layer, and inserting optical fibers sent from its upper layer;
• an optical waveband layer switching unit, constructed to be matched with the optical transport network through input and output optical wavebands, for cross-connect switching the input/output optical wavebands, obtaining wavebands by demultiplexing the optical fibers extracted from the optical fiber layer switching unit, extracting some of the wavebands from the lower layer and the input wavebands to its upper layer, inserting wavelengths sent from its upper layer, and multiplexing some of the cross-connect switched wavebands and sending them down to its lower layer;
• an optical wavelength layer switching unit, constructed to be matched with the optical transport network through input and output optical wavelengths, for cross-connect switching the input/output optical wavelengths, obtaining wavelengths by demultiplexing the wavebands extracted from the optical waveband layer switching unit, extracting some of the obtained wavelengths from the lower layer and the input wavelengths to a local network, inserting wavelengths sent from the local network, and multiplexing some of the wavelengths cross-connect switched to optical wavebands and sending them to its lower layer;
• a first inter-layer connecting unit for interfacing the optical fiber layer switching unit with the optical waveband layer switching unit for insertion/extraction therebetween;
• and
• a second inter-layer connecting unit for interfacing the optical waveband layer switching unit with the optical wavelength layer switching unit for insertion/extraction therebetween.