Optical logic and memory apparatus
US4689793A · kind A · utility
20Cited by
3References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1985 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Jul 3, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/32391
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A complete set of optical logic gates and circuits based upon direct polarization switching, and various types of optical flip-flops based upon polarization bistability, in semiconductor lasers are described. By operating the laser in the direct polarization switchable mode, logic gates and circuits such as inverter, AND, NAND, OR and NOR can be provided with two optoelectronic switches or photodetectors. With the laser being operated in the polarization bistable mode, clocked optical flip-flops are operable with a few optoelectronic switches or photodetectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.