Optical router switch array and method for manufacture
US6885414B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2001 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/06
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical router switch array includes a plurality of switchable mirror elements having holographic liquid crystal arranged in stack cells. Each of the mirror elements is isolated electrically from the other switchable mirror elements by a plurality of substrates alternative arranged between the switchable mirror elements. Holographic gratings are formed on the holographic liquid crystal by exposure to holography at predetermined incident angles. A single switchable mirror element can also be provided in cases where an array is not required. The switchable mirror elements are polarization insensitive, stable within the operational spectral region, and stable versus temperature. The invention also includes methods for manufacturing a single switchable mirror element and the optical arrray.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.