Device for routing light among a set of optical waveguides
US9703050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2013 |
| Grant date | Jul 11, 2017 |
| Priority date | — |
| Expiry date | Dec 27, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12107
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light streams are routed. A transparent plate can be provided in which at least 2 waveguides converge on an active region, wherein the active region comprises a switching element, which can be utilized to extract a portion of the light stream or combine two or more wavelength portions for form a subsequent light stream. Cladding material constrains a light stream to a waveguide. Ion bombardment can be utilized to form micropores in the cladding material, and subsequent etching can enlarge the micropores to form larger diameter pores (of nanometer scale) in the switching element. The pores can be filled with liquid crystal, which can be in a passive state with a first refractive (RI) index, and a second active state (electrical voltage applied) with a second RI. By adjusting the RI. the light stream can be diverted by operations of refraction, diffraction, reflection, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.