Optical switching with ferroelectric liquid crystal SLMs
US6975786B1 · kind B1 · utility
30Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2000 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Jan 28, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/1319
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical switch uses two ferroelectric liquid crystal spatial light modulators (10, 11) with an interconnect region in between. The switch uses bulk lenses (2, 8) to focus light from an input fibre array (1) to a first spatial light modulator (10), and from the second spatial light modulator (11) to an output array (9). Each spatial light modulator displays a respective hologram selected from a previously calculated set, to cause a desired switching of light from the input fibre array to the output array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.