Differential drive optical modulator
US6192167A · kind A · utility
39Cited by
9References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Jul 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0356
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A differential input optical modulator, suited for an electrical driver with complementary outputs is provided by the present invention. One embodiment uses a X-cut LiNbO3 substrate, with or without a buffer layer, to reduce cost of manufacture in comparison to some known devices that employ a Z-cut LiNbO.about. substrate. These prior art devices require both buffer and charge bleed-off layers. The present invention also includes a quasi-symmetric electrode structure in which the applied fields run parallel to the surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.