Patent · US Expired

Method and apparatus for providing polarization insensitive signal processing for interferometric sensors

US7081959B2 · kind B2 · utility

11Cited by

5References

52Claims

0Family size

Assignee

OPTOPLAN AS · NO

Inventors

Ole Henrik Waagaard · Trondheim, NO
Erlend Rønnekleiv · Trondheim, NO

Key dates

Filing date	Aug 27, 2003
Grant date	Jul 25, 2006
Priority date	—
Expiry date	Aug 5, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG01D5/35383
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus that uses specific source modulation and detectors to detect a response that carries information about a system response matrix associated with each sensor in a interferometric sensor array and extracting a sensor response in a manner that eliminates polarization-induced signal fading and that is insensitive to lead fiber birefringence fluctuations.

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