Optical phase modulation element and optical modulator using the same
US8116600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2007 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Dec 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a small-size optical phase modulation element and an optical modulator using it. The optical phase modulation element includes a Plasmon waveguide having a clad made of a metal material having a complex dielectric constant having a negative real part in the used wavelength and a core formed by a dielectric metal material having a complex dielectric constant having a positive real part in the used wavelength. The Plasmon waveguide is connected to an optical waveguide including a clad and a core both having a complex dielectric constant having a positive real part. The core of the Plasmon waveguide and the core of the optical waveguide are formed, at least partially, of the same semiconductor material. The Plasmon waveguide has a function to phase-modulate the incident light when voltage is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.