Bipolar voltage controlled optical switch using intersecting waveguides
US4730884A · kind A · utility
10Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jul 29, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3137
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical switch comprising: an electrode-optic crystal substrate (1, 1'); a central waveguide (21); a pair of input waveguides (22, 23), and a pair of output waveguides (24, 25). A refractive-index-changed region (R') is provided symmetrically within some part of the central waveguide. Switching from the straight-through state to the branching state or vice versa is carried out by introducing a change in the refractive index of the index-changed region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.