| 摘要 |
An optical switch matrix arrangement comprises an array of optical switches, each switch being switchable between N, e.g. 2, states in which a light signal is directed selectively between a first node and any one of N further nodes of the switch. The arrangement further comprises oscillator means for oscillating each switch between the N states, the switches being arranged in ranks in a tree-like configuration with the N further nodes of a first switch in a first rank being each connected to a first node of one of N further switches in a second rank. The oscillator means is arranged to oscillate the switches in the second rank between the N states at a frequency that is 1/N x the frequency with which the switches in the first rank are oscillated. <IMAGE> |
