Humidity tolerant electro-optic device
US7529433B2 · kind B2 · utility
4Cited by
29References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2008 |
| Grant date | May 5, 2009 |
| Priority date | — |
| Expiry date | Jan 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/0356
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an electro-optic modulator structure containing an additional set of bias electrodes buried within the device for applying bias to set the operating point. Thus the RF electrodes used to modulate incoming optical signals can be operated with zero DC bias, reducing electrode corrosion by electro-migration and other effects that can be present in non-hermetic packages. The bias electrodes include an upper split portion and an optically transparent lower portion. The optically transparent lower layer improves modulation frequency and reduces optical loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.