Title :
Advances in optical fiber-based Faraday Rotation Diagnostics
Author :
White, A.D. ; McHale, G.B. ; Goerz, D.A.
Author_Institution :
Lawrence Livermore Nat. Lab., Lawrence, CA, USA
fDate :
June 28 2009-July 2 2009
Abstract :
In the past two years, we have used optical fiber-based Faraday rotation diagnostics (FRDs) to measure pulsed currents on several dozen capacitively driven and explosively driven pulsed power experiments. We have made simplifications to the necessary hardware for quadrature-encoded polarization analysis, including development of an all-fiber analysis scheme. We have developed a numerical model that is useful for predicting and quantifying deviations from the ideal diagnostic response. We have developed a method of analyzing quadrature-encoded FRD data that is simple to perform and offers numerous advantages over several existing methods. When comparison has been possible, we have seen good agreement with our FRDs and other current sensors.
Keywords :
Faraday effect; electric current measurement; fibre optic sensors; optical fibre polarisation; pulsed power supplies; all-fiber analysis scheme; capacitively driven pulsed power experiments; explosively driven pulsed power experiments; numerical model; optical fiber-based Faraday rotation diagnostics; pulsed currents; quadrature-encoded FRD; quadrature-encoded polarization analysis; Current measurement; Hardware; Numerical models; Optical fiber polarization; Optical fibers; Optical pulses; Optical sensors; Power measurement; Pulse measurements; Rotation measurement;
Conference_Titel :
Pulsed Power Conference, 2009. PPC '09. IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-4064-1
Electronic_ISBN :
978-1-4244-4065-8
DOI :
10.1109/PPC.2009.5386240