Optical switch array
US4648686A · kind A · utility
20Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1982 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Oct 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0147
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical switch array including a substrate in the main surface of which is formed a plurality of inlet waveguides arranged side-by-side with a predetermined pitch and a like plurality of outlet waveguides each arranged in line with the corresponding inlet waveguide with a gap therebetween is provided. The gap is filled with a material having a temperature dependent index of refraction, which is lower in value than the waveguides at normal temperature but becomes comparable in value to the waveguide when heated thereby optically coupling the paired inlet and outlet waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.