Low crosstalk optical switch

Details Low crosstalk optical switch Low crosstalk optical switch

1976-02-20

1977-03-08

Yusko, Donald J.

Communications: electrical

Digital comparator systems

250199, 350 96WG, 350161W, G02B 514, G02F 100, H04B 900, H04Q 100

Patent

active

040115437

ABSTRACT:
A low crosstalk optical switching matrix of individual optical switches wherein anyone of n input ports may be addressed to any one of n output ports. Ports of the individual optical switches which are employed for inter-row and inter-column coupling at the interior of the matrix are not used in the last row and column and are terminated with optical signal absorbers thereat, thus providing a means for absorbing non-addressed signals and spurious reflections. The crosstalk properties of the matrix are further improved by utilizing a multiplicity of four port switching elements in tandem for each individual optical switch.

REFERENCES:
patent: 3622792 (1971-11-01), Piccininni
patent: 3746879 (1973-07-01), Esaki et al.
patent: 3818451 (1974-06-01), Coleman
patent: 3833866 (1974-09-01), Boutelant
patent: 3871743 (1975-03-01), Fulenwider
patent: 3916182 (1975-10-01), Dabby et al.
patent: 3924931 (1975-12-01), Cheo

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