Electro-optic modulator
US5005932A · kind A · utility
14Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Nov 6, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3134
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optic modulator (10) includes a pair of optical waveguide channels (20, 22) formed in an X-cut lithium niobate substrate (12) and an overlying RF coplanar waveguide (36). A periodic electrode structure (48) of the intermittent interaction type employs a plurality of middle stubs (52) to maintain the phase of the RF drive frequency in phase with the optical signal. The modulator (10) also utilizes shorter stubs (64) and tapered inlets (42) and outlets (44) to match and transform impedances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.