Method of operation of the multi-stage N × N space division switching equipment

摘要

The 1 × 2 switch can have a switch-on state (57) of Tsu [Abstract] 2, N = 2 ^n, which is formed respectively followed by (e1, ...... eN) in a space division switching unit input section ( In this case, the 1 × 2 switch that can be (E1, and ...... EN) input pyramid n = 1,2,3, ... of) pieces, with a switch on the two states, space division switching equipment output section each (In this case, n = 1,2,3, ......) (A1, ...... AN) and output pyramid number, N = 2 ^n, which is subsequently formed as a subsequent stage (a1, ...... aN) to the input pyramid multistage N × N space division switching system having N formed subsequent to and the output pyramid ² links (1z1, ......, NzN) of a (perfect shuffle) link network in (R), the same one wavelength network of light occurs in the input of the N × N space division switching unit, (in this case, m = 1,2, ......, n-1) ^M = 2 m number of input wavelengths individual, the This may be repeated at intervals, two links, to connect directly to each of the 1 × 2 switch of 2 ^n-1 of the pyramid base side of the n-stage pyramid of 1 × 2 switch, the output pyramid from the input pyramid of the i-th and continues until I will form a connection path. (In this case, | i-j | = v · 2 ^m; v = 1,2, ......) j th crosstalk path, it is formed from the output pyramid input pyramid to be followed, at the same time in connection path and 1 × 2 switches the m input pyramid connected between the pyramid output section connected to the output pyramid pyramid input with not included, with not simultaneously included in the connection path, the input pyramid pyramid output The switch is switched to the ON state whenever specified away from the crosstalk path, and a 1 × 2 switch of the m that is connected between the pyramid input connected.