Tunable optical waveguide directional coupler filter
US4146297A · kind A · utility
92Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1978 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Jan 16, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/055
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An integrated optical filter composed of coupled nonidentical strip waveguides in LiNbO.sub.3 is disclosed. The device has a broad bandwidth, is tunable over several hundred angstroms, and offers electrical control of the crossover efficiency. Several devices are combined on a single substrate to provide an electrically tunable multiplexer or demultiplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.