Patent · US Active

High voltage measurement device using poled fibers

US8441249B2 · kind B2 · utility

0Cited by

5References

24Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Klaus Bohnert · Oberrohrdorf, CH
Stephan Wildermuth · Laudenbach, DE
Hubert Braendle · Oberengstringen, CH

Key dates

Filing date	Nov 5, 2010
Grant date	May 14, 2013
Priority date	—
Expiry date	Jun 29, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/241
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Two transversely poled fibers are disclosed which can be wound around a holder with their poling directions being anti-parallel. A coupling exchanges the polarization directions of the modes of the fibers. Thermally and mechanically caused birefringence changes can thereby be substantially cancelled, while electrical field induced birefringence changes can be added, to provide a more robust high voltage measuring device.

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