Patent · US Expired

Feedback polarization controller

US6885782B2 · kind B2 · utility

4Cited by

58References

27Claims

0Family size

Assignee

ILX Lightwave Corporation · US

Inventors

Christopher Wood · Webster, US
Terry J. Brown · Lafayette, US
Jason Ensher · Lafayette, US

Key dates

Filing date	Jun 25, 2002
Grant date	Apr 26, 2005
Priority date	—
Expiry date	Apr 27, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG02B27/286
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention provides a polarization controller to set the state of polarization (SOP) of light in an optical fiber. A plurality of piezoelectric squeezers couple with an electronic drive to apply compression forces to the fiber. The drive applies voltage signals to the squeezers and monitors one or more of (a) a voltage across the squeezer, (b) a capacitance change with the fiber, (c) a force applied to the squeezer, (d) a force applied to the fiber, and (e) a resonance of one or more squeezers. Feedback from one or more of (a)-(e) is used to modify the applied voltage signals in control of the SOP.

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