Patent · US Active

High extinction ratio liquid crystal optical switch

US8605247B2 · kind B2 · utility

1Cited by

20References

4Claims

0Family size

Inventors

Haijun Yuan · Pleasanton, US
Xuehua Wu · Union City, US
Christopher Lin · Corona, US
Giovanni Barbarossa · Saratoga, US

Key dates

Filing date	May 31, 2012
Grant date	Dec 10, 2013
Priority date	—
Expiry date	Jul 2, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/133528
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to direct an optical signal along a first or second optical path based on the polarization state of the optical signal as it passes through the optical elements. The optical switch performs high extinction ratio switching of the optical signal by preventing unwanted optical energy from entering an output port by using an absorptive or reflective optical element or by directing the unwanted optical energy along a different optical path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.