Non-linear optical thin film, non-linear optical device using the same, and optical switch using the same
US6900927B2 · kind B2 · utility
1Cited by
4References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 21, 2004 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Sep 21, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/3551
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device is capable of changing signal light to a plurality of paths. The device includes a film, a heating source attached to the film, and a heat radiator plate attached to the other portion of the film. The refractive index of the film varies according to heat excitation, and the film comprises crystal grains of an oxide and amorphous portions present between the crystal grains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.