光纖CRDS多參量傳感系統(tǒng)的研制及應(yīng)用.pdf

1、南開大學(xué)博士學(xué)位論文光纖CRDS多參量傳感系統(tǒng)的研制及應(yīng)用姓名：尚佳彬申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：光學(xué)指導(dǎo)教師：張偉剛201205AbstractAbstractThisthesisprovidesacomprehensiveintroductionofthehistoricalprogress，features，andmeritsofthecavityring—downspectroscopy(CRDS)technologyaswella

2、sitsdistinguishedperformancesinspectralabsorptionmeasurementandsensingdetection；theprincipleofCRDStechnologyhasbeenbrieflyintroducedwhilevariousCRDSschemeshavebeencomparedindetailfromtheaspectsoflightsourceandcavitystruc

3、ture；moreoveragoodvarietyofCRDSconfigurationsandtheftapplicationshavebeenintroducedfollowedbyafutureprospectofthistechnologyThemaincontentofthisthesisincludesthefollowingaspects：1TheprincipleandsyStemconfigurationofCRDSt

4、echnologyhasbeensystematicallydescribed，andtheinfluenceoflightsource，gainmodule，couplerandoptoelectronicdetectoronthesensingaccuracyhasbeenanalyzedfromtechnologicalperspective；therelationshipbetweenring—downtimeandtheabs

5、orptionlossofintracavitysampleandsensingelementhasbeeninvestigatedinquantityfurthermoreafewfiber100pbasedCRDSsensingsystemhasbeenalsoanalyzedindetailtopointouttheirrespectivemeritsanddisadvantages2Gauss1ikefibermicrocavi

6、tywasfabricatedinsinglemodefibersbyusingthehighfrequencycarbondioxide(c02)laserandmakesitasakindofnewsensingunitaccesstothe1060nlncavityringdownsensorsystemforthefirsttimeTheexperimentalmeasurementfortemperatureandstrain

7、doubleparameterswasrealizedOnthebasisofit，athreeparameteropticalfibersensingsystemwasdevelopedsuccessfullyThetemperature，therefractiveindexandthestrainwere1!easuredatthesametime3ACRDSmicrocavitytemperaturesensingsystemha

8、sbeenproposedanddevelopedThissystememploysa6bermicrocavityfabficmedbymehi曲fiequencyC02lasertoserveasthetemperaturesensingelement，andhightemperaturesensitivityhasbeenachievedbymeasuringthering—downtimeunderdifferenttemper