Multiple port optical fiber switch

Details Multiple port optical fiber switch Multiple port optical fiber switch

1984-08-03

1987-01-06

Corbin, John K.

350286, 350287, G02B 2608

Patent

active

046342397

ABSTRACT:
A multiple port electromechanical optical fiber switch provides for the exchange redirection of one common optical path with one of several other optical paths through the switch. It is particularly useful when one standby laser transmitter must be quickly substituted for any single failed transmitter among a group of several actively operating transmitters. A prism for exchanging the optical paths of two initially parallel beams by means of four refractions at their entry and exit points and at least two internal reflections per beam within the prism is set forth in modified rhombic form with two additional parallel facets that transmit undeflected in the deactivated position one of two beams so as to minimize required shift distance to the prism activated position where it exchanges the optical paths of both parallel beams.

REFERENCES:
patent: 4322126 (1982-03-01), Minowa et al.
patent: 4329331 (1980-12-01), Aoyama
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