Cov cim qhia ntawm Mach-Zehnder modulator

Cov cim qhia ntawmMach-Zehnder modulator

Lub Mach-Zehnder Modulator (luv uaMZM modulator) yog ib qho cuab yeej tseem ceeb uas siv los ua kom tiav cov teeb liab teeb liab hauv kev sib txuas lus optical. Nws yog ib qho tseem ceeb ntawmElectro-Optic Modulator, thiab nws cov ntsuas kev ua tau zoo cuam tshuam ncaj qha rau qhov kev ua haujlwm ntawm kev sib kis thiab kev ruaj khov ntawm cov kab ke sib txuas lus. Cov hauv qab no yog kev qhia txog nws cov ntsuas tseem ceeb:

Cov kev kho qhov muag tsis pom kev

1. 3dB bandwidth: Nws yog hais txog qhov ntau zaus thaum qhov amplitude ntawm lub modulator lub teeb liab tso zis poob qis los ntawm 3dB, nrog rau chav tsev yog GHz. Qhov siab dua ntawm bandwidth, qhov siab dua ntawm kev xa cov teeb liab txhawb nqa. Piv txwv li, 90GHz bandwidth tuaj yeem txhawb nqa 200Gbps PAM4 teeb liab kis.

2. Qhov piv ntawm kev ploj tuag (ER): Qhov piv ntawm lub zog pom kev siab tshaj plaws rau lub zog pom kev tsawg kawg nkaus, nrog rau chav ntawm dB. Qhov siab dua qhov piv ntawm kev ploj tuag, qhov sib txawv ntawm "0" thiab "1" hauv lub teeb liab, thiab qhov muaj zog dua qhov muaj peev xwm tiv thaiv suab nrov.

3. Kev poob ntawm kev ntxig: Qhov poob ntawm lub zog kho qhov muag uas lub modulator tau qhia, nrog rau chav ntawm dB. Qhov qis dua qhov poob ntawm kev ntxig, qhov siab dua qhov ua tau zoo ntawm lub kaw lus.

4. Kev poob rov qab: Qhov piv ntawm lub zog pom kev uas cuam tshuam ntawm qhov kawg ntawm qhov nkag mus rau lub zog pom kev uas nkag mus, nrog rau chav ntsuas ntawm dB. Kev poob rov qab siab tuaj yeem txo qhov cuam tshuam ntawm lub teeb pom kev rau ntawm lub cev.

Cov tsis siv hluav taws xob

Lub zog hluav taws xob ib nrab nthwv dej (Vπ): Lub zog hluav taws xob uas xav tau los tsim kom muaj qhov sib txawv ntawm 180° hauv lub teeb liab tso zis ntawm lub modulator, ntsuas hauv V. Qhov qis dua Vπ, qhov xav tau lub zog hluav taws xob tsav me dua thiab qhov siv hluav taws xob tsawg dua.

2. Tus nqi VπL: Cov khoom ntawm lub zog ib nrab nthwv dej thiab qhov ntev ntawm lub modulator, uas qhia txog kev ua haujlwm ntawm kev hloov kho. Piv txwv li, VπL = 2.2V·cm (L=2.58mm) sawv cev rau lub zog hloov kho uas xav tau ntawm qhov ntev tshwj xeeb.

3. Dc bias voltage: Nws yog siv los tswj qhov chaw ua haujlwm ntawmtus neeg hloov khothiab tiv thaiv kev hloov pauv ntawm qhov tsis sib xws los ntawm cov yam xws li kub thiab kev co.

Lwm cov cim qhia tseem ceeb

1. Tus nqi ntawm cov ntaub ntawv: Piv txwv li, lub peev xwm xa cov teeb liab 200Gbps PAM4 qhia txog lub peev xwm sib txuas lus ceev ceev uas lub modulator txhawb nqa.

2. Tus nqi TDECQ: Ib qho cim qhia txog kev ntsuas qhov zoo ntawm cov teeb liab modulated, nrog rau chav tsev yog dB. Tus nqi TDECQ siab dua, qhov muaj zog ntawm lub teeb liab lub peev xwm tiv thaiv suab nrov thiab qhov qis dua qhov yuam kev me ntsis.

Cov Lus Qhia Luv: Kev ua tau zoo ntawm March-Zendl modulator yog txiav txim siab los ntawm cov ntsuas xws li optical bandwidth, extinction ratio, insertion loss, thiab half-wave voltage. High bandwidth, low insertion loss, high extinction ratio thiab low Vπ yog cov yam ntxwv tseem ceeb ntawm high-performance modulators, uas cuam tshuam ncaj qha rau qhov kis tau tus nqi, kev ruaj khov thiab kev siv zog ntawm cov kab ke sib txuas lus optical.