| 摘要 |
An interconnection network 40 comprising: an ingress stage 10 comprising M switch cards 12 each comprising an ingress electrical switch matrix and electrical-to-optical, E-O, conversion apparatus to convert a plurality of electrical signals from the switch matrix into respective optical signals each having a respective one of N wavelengths and to deliver the plurality of optical signals to an optical output 14; an egress stage 30 comprising M switch cards 32 each comprising an optical input 34, an egress electrical switch matrix and optical-to-electrical, O-E, conversion apparatus to convert optical signals each having a respective one of the N wavelengths into respective electrical signals and to deliver the electrical signals to the switch matrix; and an optical shuffle 42 comprising a passive fixed wavelength optical router having a cyclic wavelength response and having M input ports and M output ports, and configured to receive a plurality of optical signals at one of the input ports and to route each of said optical signals from the input port to a respective one of the output ports according to the wavelength of each optical signal, the plurality of wavelengths, N, is greater than the plurality, M, of input ports or output ports and the router is configured to route optical signals having each Mth one of the wavelengths from the selected optical shuffle input port to a same one of the output ports. |
