External Cavity Fiber Fabry-Perot Magnetometer

Abstract

A magnetometer uses a material exhibiting the Faraday effect, in which the polarization of light transmitted through the material is changed in response to a magnetic field. When the material is placed in a Fabry-Perot cavity, multiple reflections of the light within the Fabry-Perot cavity increase the change in polarization and thus the sensitivity of the magnetometer. Other effects that alter the polarization of light can be employed instead.

U.S. Patent and Trademark Office Description

PTO

Inventor(s)

Christopher Davis, Richard Wagreich

Date Issued

11/09/1999

Patent No.

5,982,174