CovMach-Zehnder Modulator(MZ Modulator) yog ib qho khoom siv tseem ceeb rau kev hloov kho qhov muag teeb liab raws li txoj cai cuam tshuam. Nws txoj hauv kev ua haujlwm yog raws li hauv qab no: Ntawm Y-shaped ceg ntawm qhov kawg ntawm cov tswv yim, lub teeb pom kev tau muab faib ua ob lub teeb tsis muaj zog thiab nkag mus rau ob qho tib si optical channel rau kev sib kis. Optical channel yog ua los ntawm cov khoom siv electro-optic. Los ntawm kev ua kom zoo dua ntawm nws cov txiaj ntsig photoelectric, thaum lub teeb liab siv hluav taws xob sab nraud hloov pauv, qhov ntsuas qhov cuam tshuam ntawm nws tus kheej cov khoom tuaj yeem hloov pauv, uas ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm ob kab teeb ntawm lub teeb mus txog Y-zoo li ceg ntawm cov zis kawg. Thaum cov teeb liab kho qhov muag nyob rau hauv ob txoj kev kho qhov muag ncav cuag Y-zoo li ceg ntawm qhov tso zis kawg, kev sib tshuam yuav tshwm sim. Vim yog qhov sib txawv theem qeeb ntawm ob lub teeb liab kho qhov muag, kev cuam tshuam tshwm sim ntawm lawv, hloov cov theem sib txawv cov ntaub ntawv nqa los ntawm ob lub teeb liab kho qhov muag rau hauv cov ntaub ntawv siv ntawm cov teeb liab tso zis. Yog li ntawd, kev ua haujlwm ntawm kev hloov pauv hluav taws xob cov teeb liab mus rau cov khoom siv kho qhov muag tuaj yeem ua tiav los ntawm kev tswj hwm ntau yam tsis muaj kev thauj khoom ntawm lub Peb Hlis-Zehnder modulator.
Basic parameters ntawmMZ Modulator
Qhov tsis zoo ntawm MZ Modulator ncaj qha cuam tshuam rau kev ua haujlwm ntawm tus modulator hauv ntau yam kev thov. Ntawm lawv, qhov tseem ceeb optical tsis thiab hluav taws xob tsis muaj raws li hauv qab no.
Optical Parameters:
(1) Optical bandwidth (3db bandwidth): Qhov ntau zaus thaum qhov zaus teb amplitude txo los ntawm 3db los ntawm tus nqi siab tshaj plaws, nrog rau chav tsev yog Ghz. Optical bandwidth qhia txog qhov ntau zaus ntawm lub teeb liab thaum lub modulator ua haujlwm ib txwm thiab yog qhov ntsuas ntsuas cov ntaub ntawv nqa lub peev xwm ntawm cov khoom siv kho qhov muag hauvelectro-optic modulator.
(2) Extinction ratio: Qhov piv ntawm qhov siab tshaj plaws kho qhov muag tso zis hluav taws xob los ntawm electro-optic modulator mus rau qhov tsawg kawg nkaus kho qhov muag hwj chim, nrog rau chav tsev ntawm dB. Qhov kev ploj tuag yog ib qho kev ntsuas rau kev ntsuas lub peev xwm ntawm electro-optic hloov ntawm lub modulator.
(3) Rov qab poob: Qhov piv ntawm qhov cuam tshuam lub teeb lub zog ntawm qhov kev tawm tswv yim kawg ntawm qhovmodulatormus rau lub input lub teeb lub zog, nrog rau chav tsev ntawm dB. Rov qab poob yog qhov ntsuas uas qhia txog qhov xwm txheej lub zog rov qab los rau lub teeb liab qhov chaw.
(4) Insertion poob: Qhov piv ntawm qhov tso zis hluav taws xob kho qhov muag mus rau qhov kev tawm tswv yim kho qhov muag ntawm lub tshuab hluav taws xob thaum nws ncav cuag nws lub zog tso zis siab tshaj plaws, nrog rau chav tsev yog dB. Insertion poob yog ib qho taw qhia uas ntsuas qhov muag tsis pom lub zog uas tshwm sim los ntawm kev ntxig ntawm txoj kev kho qhov muag.
(5) Qhov siab tshaj plaws input optical zog: Thaum lub sij hawm ib txwm siv, lub MZM Modulator input optical zog yuav tsum tsawg tshaj li qhov no tus nqi los tiv thaiv ntaus ntawv puas, nrog rau chav tsev yog mW.
(6) Modulation qhov tob: Nws yog hais txog qhov sib piv ntawm cov teeb liab modulation amplitude rau cov cab kuj amplitude, feem ntau qhia raws li feem pua.
Kev ntsuas hluav taws xob:
Ib nrab-yoj voltage: Nws hais txog qhov sib txawv ntawm qhov yuav tsum tau muaj rau qhov tsav tsheb voltage hloov lub modulator los ntawm lub xeev tawm mus rau lub xeev. Cov zis hluav taws xob kho qhov muag ntawm MZM Modulator sib txawv tsis tu ncua nrog kev hloov pauv ntawm qhov tsis sib xws. Thaum lub modulator tso zis generates ib tug 180-degree theem sib txawv, qhov sib txawv nyob rau hauv bias voltage coj mus rau qhov chaw yam tsawg kawg nkaus point thiab qhov siab tshaj plaws taw tes yog ib nrab-yoj voltage, nrog rau cov chav tsev ntawm V. Qhov no parameter yog txiav txim los ntawm tej yam xws li khoom, qauv thiab txheej txheem, thiab yog ib tug inherent parameter.MZM Modulator.
(2) Qhov siab tshaj plaws DC tsis zoo voltage: Thaum lub sij hawm siv ib txwm siv, qhov input bias voltage ntawm MZM yuav tsum tsawg tshaj li tus nqi no los tiv thaiv cov cuab yeej puas. Chav tsev yog V. Lub DC bias voltage yog siv los tswj qhov tsis ncaj ncees lub xeev ntawm lub modulator kom tau raws li cov kev cai sib txawv.
(3) Qhov siab tshaj plaws RF teeb liab tus nqi: Thaum lub sij hawm siv ib txwm siv, lub tswv yim RF hluav taws xob teeb liab ntawm MZM yuav tsum tsawg dua tus nqi no los tiv thaiv cov cuab yeej puas. Chav tsev yog V. Ib lub xov tooj cua zaus teeb liab yog lub teeb liab hluav taws xob uas yuav tsum tau hloov kho mus rau ib qho khoom siv kho qhov muag.
Post lub sij hawm: Jun-16-2025