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《寬帶集成光波導(dǎo)射頻全向電場傳感器的研究》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、電子科技大學(xué)碩士學(xué)位論文寬帶集成光波導(dǎo)射頻全向電場傳感器的研究姓名：孫豹申請學(xué)位級別：碩士專業(yè)：光學(xué)工程指導(dǎo)教師：陳福深20060101一一壘!!!墜竺!ABSTRACTWiththeprogressinelectronicequipment，evaluationoftheelectromagneticcompatibility(EMC)oftheequipmenthasbecomeanimportantissue．ToevaluatetheEMCitisnecessarytoaccuratelyunde
2、rstandtheelectromagneticfieldsurroundingtheequipment．Therefore，varioussensorsformeasuringtheelectricfieldhavebeendeveloped．Amongthem，sincetheelectricfieldsensorusingaMath—Zehnderinterferometerfeatureswidebandwidth，highsensitivity，andhighresolution，itsappl
3、icationinEMCmeasurementisexperted．．First，thispaperhasintroducedtheoperationprincipleoftheopticalwaveguideelectricfieldsensor,andbuiltaequivalentcircuitmodeloftheelectricfieldsensorandasystemmodel．Andthenthesensitivity，thefrequencyresponseandthelinearitydy
4、namicrangeareanalyzeddetailedly．Thesimulatedresultsshowthatwecanimprovethesensitivitybysettingtheopticalbiasat刑2，reducingthegapofelectrode，increasingtheoverlapintegralfactor,reducingtheinsertlose，adoptingsuitablesegmentationnumber,increasingtheelectrodele
5、ngth，increasingtheopticalpower，reducingthewavelengthandtherelativeintensitynoiseandreducingthereceivebandwidth；obtainthewiderbandwidthutilizingreducingtheelectrodelengthandthecapacitanceofmodulator,segmentationtheelectrode；increasethedynamicrangeusinglowe
6、ringnoise，increasingtheopticalpoweratthedetectorandloweropticalbiasWedesignedandfabricated3opticalelectricfieldsensorswithsegmentelectrode，basingontheanalyses．Theisotropicelectricfieldprobehasbeenfabricatedusing3sensors，anditscharactersweremeasured，includ
7、ingelectrostaticfieldmeasurement，frequencyresponsemeasurement，sensitivitymeasurementanddynamicmeasurement．The士3dBbandwidthisfrom1MHzto1GHzandthe士5dBbandwidthisupto2．5GHz．TheminimumdetectableelectricfieldstrerIgthis10～20mV／matfrequencybandwidthof3Hz．Thedyn
8、amicrangeis80dBat250MHz．Theisotropyis士3dBat200MHz．a(chǎn)nd土1．5dBat20Hz．Keywords：EMC、electricfieldsenor，segmentelectrode，M—Zinterferometer，isotropy墮塑蘭室LiNb03M．ZEMCTEMCellGTEMCellRBWVBWRIN簡縮字表LithiumNlobateMach．互ehnderElec
