Traveling wave optical modulator
US5091981A · kind A · utility
25Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Aug 1, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3134
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A travelling wave optical modulator comprises a Z-cut lithium niobate substrate on which is formed a proton exchanged optical waveguide and a travelling wave electrode. The optical waveguide is removed from the electrode intermittently to bring an optical signal in the optical waveguide back into phase with an electric field passing along the electrode. The optical signal is delayed relative to the electric field thereby allowing modulation of the optical signal by a non-periodic electric field. The optical waveguide is defined within the boundaries of the top surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.