A Model of Magneto-mechano-optical Transfer in Fibre-optic Magnetic Sensors with Magnetostrictive Films-中国期刊网

摘要 Fibre-opticmagneticsensorswithmagnetostrictivefilmsareusedasall-fibreMach-Zehnderinterferometertodetecttheopticalphaseshift,whichiscausedbythemagnetostriction-inducedstrainstransferredfromthemsgnetostrictivefilmtothefibre.Atheoreticalmodelbasedontheplanestrainapproximationanduniformaxialstrainisdevelopedtodeterminethemagneto-mechano-opticaltransferrelationsinthiskindofsensors.Theexpressionforthemodelispresentedaswellasrelationofthephaseshiftinthefibretothemagneticandelasticpropertiesofthemagnetostrictivefilmcoatedonthefibre.Andfromthemodel,thethicknessofthefilmhassignificantinfluenceonthephaseshift.

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A Model of Magneto-mechano-optical Transfer in Fibre-optic Magnetic Sensors with Magnetostrictive Films

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A Model of Magneto-mechano-optical Transfer in Fibre-optic Magnetic Sensors with Magnetostrictive Films

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