Optical functional devices
US7532777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2007 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Aug 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical functional device has a slab type two-dimensional photonic crystal layer. The photonic crystal layer has a dielectric layer and a plurality of lattice columns each comprising dielectric pillars. A waveguide portion is provided in the photonic crystal layer. A ground electrode and a signal electrode are formed on the dielectric layer for applying a modulating voltage on light propagating in the waveguide portion. A layer of a high dielectric constant is laminated on the dielectric layer. A low dielectric portion is formed direct under the waveguide portion and the lattice columns 7A, 7B and 7C of at least first, second and third orders in distance with respect to said waveguide portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.