波導(dǎo)器件與光纖端面耦合問(wèn)題研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文波導(dǎo)器件與光纖端面耦合問(wèn)題研究姓名：谷東旭申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：光電信息工程指導(dǎo)教師：趙茗20110106IIAbstractOptoelectronicintegratedcircuit(OEIC)isthedevelopmenttrendofoptoelectronicdevicesduetotheiroutstingmeritssuchaslowionlosscompactsizesmallcrossta

2、lkhighstabilityetc.HoweverWaveguidestructuresinoptoelectronicintegratedcircuithaveasmallnoncircularspotsizeafiberhasalagercircularmodeprofile.ThusthereishighlossduetothemodemismatchifthefiberissimplybuttcoupledtotheOEIC.

3、Therefethereistypically10dBevengreaterpowerlosswhenOEICisdirectlybuttcoupledtosinglemodefiber(SMF).Thisbecomesachallengingproblem.1dBmismatchtoleranceisanimptantcriterion(indicat)todeterminetheperfmanceofopticalcouplings

4、ystem。Itisalsothekeytoresolvecoupledpackagingissues.Thesocalled1dBmismatchtoleranceistheaxiallateralangularoffsetwhencouplingefficiencydecreasedfromthemaximum.Thegreater1dBmismatchtolerancemeansthatthesystemallowedthebig

5、gerpackagealignmentoffsetsowecanuseasimplestructurelowcostpackagingtechnology.Converselyifthe1dBmismatchtoleranceistoosmallprecisealignmentnotonlybecomeconsiderabledifficultybutalsobevulnerabletoexternaldisturbances(such

6、asmechanicalvibrationsotherfacts).Thispaperhasstudiedseveraldifferentkindofwaveguidecoupledpackagingtechnologiesaimingtodesignthelowionlosseasilyalignmenttolerancecompactspotsizeconverter(SSC).Fromthecontentofthispaper，i

7、tcanbedividedintothreeparts.Fthefirstpartofthisthesiswehavestudiedtheendcouplingofopticalwaveguidefiberdetailedtheeticalanalysis.3Doverlapintegralmethodwasusedtocalculatethemodecouplingefficiencybetweentheopticalwaveguid

8、efiber.Thisthesistheeticallyanalyzedthereasonsgenerationofionloss.Inadditionbuttcouplingofopticalwaveguidefiberwasdiscussedtoanalyzethecouplingrelatedacters.Inthesecondpartthreetypesofspotsizeconverter:simplelaterallytap