Optical distributor

Details Optical distributor Optical distributor

1991-02-13

1992-11-17

Henry, Jon W.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

G02B 2714

Patent

active

051650800

ABSTRACT:
An optical distributor comprises an optical input (Il), and 2.sup.n optical outputs (01-08) , where n is an integer greater than 1, one or more plane mirror surfaces (8) and transflective means (2, 4, 6). The plane mirror surface or surfaces (8) and the transflective means (2, 4, 6) are arranged to provide one optical path between the input (Il) and each of the outputs (01-08), each path making n transitions only at the transflective means. In a preferred embodiment the transflective means comprise n separate beam splitter stages, the effective lengths of the n separate splitter stages (2, 4, 6) being substantially in the ratio 1.2 2.sup.n. The beam splitters may be formed by transflective coatings on glass substrates.

REFERENCES:
patent: 2267948 (1941-12-01), Rantsch
patent: 3501640 (1970-03-01), Harris
Japanese Patent Abstracts, vol. 7, No. 73 Mar. 25, 1983.
Journal of Lightwave Technology, Vo LT-3, No. 2, Apr. 1985 4.times.4 Optical Gate Matrix Switch, Himeno et al.

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