| 摘要 |
PURPOSE:To enable time slot exchange and frequency exchange in each channel to be conducted, to sufficiently satisfy a conversion speed even by a call unit without requiring a bit-unit conversion speed and to compact a system by spatially developing all composite frequency/time multiplexed optical signals on plural input highways. CONSTITUTION:An optical channel is constituted of input light highways 1-1 to 1-4, demultiplexers 2-1 to 2-4, 1-input/10-output optical switches 3-1 to 3-4, 10 optical memory arrays 4-1 to 4-40, 10 frequency conversion element arrays 5-1 to 5-40, 10 optical gate switch arrays 6-1 to 6-40, an integrated optical spatial switch 7 consisting of 400X4 switch elements, and output light highways 8-1 to 8-4. In this constitution, a composite multiplexed optical signal multiplexed based upon frequency multiplicity 10, time multiplicity 10 and four highway is spatially developed from respective input light highway in each channel through the demultiplexers and output light switches, the developed optical signals consisting of 100 channels are passed through the optical memory arrays, frequency conversion element arrays, etc., and a prescribed output is outputted from one of four highways. |
