Integrated optical devices including tunable fixed grating
US4039249A · kind A · utility
36Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1973 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Mar 28, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/22
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable permanently fixed diffraction grating is interposed in the path of an optical beam propagated in an integrated-optics device. Tuning is accomplished, for example, by establishing a variable electric field in the propagating medium to control its refractive index. In that way the effective grating spacing is changed. As a result tunable optical filters and intensity modulators are thereby realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.