Optical switching apparatus with retroreflector

Details Optical switching apparatus with retroreflector Optical switching apparatus with retroreflector

1994-02-25

1996-01-02

Bovernick, Rodney B.

Optical waveguides

With optical coupler

Switch

385 25, 385 36, G02B 626

Patent

active

054816319

ABSTRACT:
An optical switch includes a primary optical fiber terminating in a primary window, and a plurality of secondary optical fibers each terminating in a secondary window facing in the same direction as and spaced laterally from the primary window. A primary lens on a primary axis has a focal point positioned on the axis at the central window. Each of a plurality of secondary lenses has an axis and a focal point positioned on such axis at a secondary window. The secondary axes are parallel to and equidistant from the primary axis. A retroreflector is spaced from the lenses oppositely from each window and has an optical axis centered parallel to the primary axis midway between the primary axis and any of the secondary fibers. A stepper motor rotates the retroreflector about the primary axis to each of a plurality of selected positions to provide optical switching for light transmission between the primary fiber and any selected secondary fiber.

REFERENCES:
patent: 4569569 (1986-02-01), Stewart
patent: 4589726 (1986-05-01), Bohrer
patent: 4626065 (1986-12-01), Mori
patent: 4848871 (1989-07-01), Seidel et al.
patent: 4989932 (1991-02-01), Landa et al.
patent: 5005934 (1991-04-01), Curtiss
patent: 5056886 (1991-10-01), Hoult
patent: 5173958 (1992-12-01), Folsom et al.

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