Optical waveguide including superstrate of niobium or silicon oxynitride and method of making same
US4701008A · kind A · utility
81Cited by
9References
6Claims
0Family size
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Key dates
| Filing date | Aug 10, 1984 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Aug 10, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and method is disclosed for providing an optical waveguide that is placed in the same plane as the electrodes, thereby creating a more efficient electro optic interaction that requires less voltage to induce the desired effects on the waveguide. In addition, a superstrate is used to cover the waveguide having an index of refraction slightly less than the index of refraction of the waveguide which reduces the scattering loss inherent in the waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.