Multi-position opto-electronic switch
US4995693A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1988 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Aug 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3652
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical switch for coupling one of a plurality of input light sources to one of a plurality of output terminals is comprised of a Bragg cell array acoustically excited in accordance with one or more preselected control frequencies from a selectable source of such frequencies. The beam deflection is proportional to the applied radio frequency. A scan lens is positioned to intercept the deflected beams and to focus the beams into a plane for imaging upon a linear array of optical output fibers. By choice of the control frequency any combination of input and output fiber optic lines may be optically coupled without requiring active sensors. Sufficient diffraction is provided by the Bragg cell in combination with the scan lens to minimize cross-talk and insertion loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.