Optical modulator
US7444039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2006 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/212
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical modulator capable of efficiently separating radiation light and propagation light from each other or removing the radiation light in the optical modulator to suppress loss of the optical modulator and deterioration of an extinction ratio, including a thin plate of a material having an electrooptic effect and a thickness of 20 μm or less; an optical waveguide formed in a top surface or a bottom surface of the thin plate; and a modulation electrode formed in the top surface of the thin plate to modulate light which propagates in the optical waveguide, the optical waveguide has an optical junction portion in which a plurality of optical waveguide portions are joined together and, for shielding a portion of radiation light radiated from the optical junction portion, a concave portion or through-hole in the thin plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.