High speed serial optical crossbar switch
US5115331A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0003
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical crossbar switch includes a plurality of input integrated optical couplers connected to a star coupler at one end of an optical cable and a star coupler coupled to the other end of the optical cable connected to plurality of output integrated optical couplers. Discrete parallel optical input signals are fed to each of the input integrated optical switches and clock signals in a time division multiplexed switching sequence switch the parallel optical signals to serial form for transmission over the cable. Clock signals are connected to actuate the output integrated optical couplers in a synchronized, time division multiplexed switching sequence at GHz rates to assure the responsive transfer of a number of signals without the consequences associated with the excessive losses attendant conventional spatial light modulator interconnections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.