Optical switch array capable of bidirectional signal transfer be

Details Optical switch array capable of bidirectional signal transfer be Optical switch array capable of bidirectional signal transfer be

1990-03-08

1993-07-13

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359139, H04J 1400

Patent

active

052279065

ABSTRACT:
An optical switch array is provided so as to connect a first group of M terminals capable of transmitting and receiving signals to and from a second group of N terminals, where M and N are respectively an integer of not less than 1.
The optical switch array comprises first and second light-emitting devices, first and second light-receiving devices and first and second shutter arrays.
The first and second light-emitting devices comprise M light sources driven in response to the signals input from the terminals of the first group and N light sources driven in response to the signals input from the terminals of the second group, respectively. The second light-emitting device is arranged in series with the first light-emitting device.
The first and second light-receiving devices are arranged in a direction perpendicular to a predetermined direction in which the first and second light-emitting devices are arranged. The first and second light-receiving devices comprise M photodetectors for outputting the signals to the terminals of the first group and N photodetectors for outputting the signals to the terminals of the second group, respectively.
The first and second shutter arrays are arranged in an optical path between the first light-emitting device and the second light receiving device and an optical path between the second light-emitting device and the first light-receiving device. The first and second shutter arrays each include at least one segment as a unit and each is constituted by a plurality of openable shutters arranged in units of segments when M.times.N segments arranged in a matrix form in the predetermined direction and the direction perpendicular to the predetermined direction are assumed.

REFERENCES:
patent: 3985975 (1976-10-01), Steensma
patent: 4543662 (1985-09-01), Huignard et al.
patent: 4707743 (1987-11-01), Tokumitsu et al.
patent: 4740061 (1988-04-01), Miura
patent: 4815027 (1989-03-01), Tokumitsu et al.
patent: 4923269 (1990-05-01), Healey
patent: 4927230 (1990-05-01), Tokumitsu
patent: 4953155 (1990-08-01), Tangonan
IEEE Spectrum, "Optical Computing: A Field in Flux," Aug. 1986, pp. 34-57.

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