Kev hloov kho qhov muag yog ntxiv cov ntaub ntawv rau lub teeb nthwv dej ntawm lub cev nqa khoom, yog li qee qhov parameter ntawm lub teeb nthwv dej ntawm lub cev nqa khoom hloov pauv nrog kev hloov pauv ntawm lub teeb liab sab nraud, suav nrog qhov muaj zog ntawm lub teeb nthwv dej, theem, zaus, polarization, wavelength thiab lwm yam. Lub teeb nthwv dej modulated uas nqa cov ntaub ntawv raug xa mus rau hauv lub fiber, ntes tau los ntawm lub koob yees duab ntes, thiab tom qab ntawd demodulated cov ntaub ntawv xav tau.
Lub hauv paus ntawm kev hloov kho hluav taws xob yog qhov cuam tshuam hluav taws xob, uas yog, nyob rau hauv qhov kev ua ntawm lub zog hluav taws xob siv, qhov ntsuas refractive ntawm qee cov siv lead ua yuav hloov pauv, thiab thaum lub teeb nthwv dej hla dhau qhov nruab nrab no, nws cov yam ntxwv kis tau yuav raug cuam tshuam thiab hloov pauv.
Muaj ntau hom electro-optic modulators (EO modulator), uas tuaj yeem muab faib ua ntau pawg raws li cov qauv sib txawv.
Raws li cov qauv electrode sib txawv, EOM tuaj yeem muab faib ua cov lumped parameter modulator thiab travelling-wave modulator.
Raws li cov qauv waveguide sib txawv, EOIM tuaj yeem muab faib ua Msch-Zehnder kev cuam tshuam qhov muaj zog modulator thiab kev sib txuas lus qhov muaj zog modulator.
Raws li kev sib raug zoo ntawm kev coj ntawm lub teeb thiab kev coj ntawm lub teb hluav taws xob, EOM tuaj yeem muab faib ua cov modulators longitudinal thiab transverse modulators. Lub longitudinal electro-optic modulator muaj qhov zoo ntawm cov qauv yooj yim, kev ua haujlwm ruaj khov (ywj pheej ntawm polarization), tsis muaj birefringence ntuj, thiab lwm yam. Nws qhov tsis zoo yog tias qhov hluav taws xob ib nrab yog siab dhau, tshwj xeeb tshaj yog thaum lub sijhawm hloov kho siab, lub zog poob loj heev.
Lub tshuab hluav taws xob electro-optical intensity modulator yog ib yam khoom sib xyaw ua ke uas Rofea muaj nrog cov cai tswjfwm kev txawj ntse ywj pheej. Lub cuab yeej sib xyaw ua ke lub tshuab hluav taws xob electro-optical intensity modulator, microwave amplifier thiab nws lub voj voog tsav tsheb rau hauv ib qho, uas tsis yog tsuas yog pab txhawb kev siv ntawm cov neeg siv, tab sis kuj txhim kho qhov kev ntseeg siab ntawm MZ intensity modulator, thiab tuaj yeem muab cov kev pabcuam raws li cov neeg siv xav tau.
Nta:
⚫ Kev poob qis ntawm kev ntxig
⚫ Kev siv bandwidth siab
⚫ Qhov nce thiab qhov offset ua haujlwm hloov kho tau
⚫ AC 220V
⚫ Siv tau yooj yim, xaiv tau lub teeb ci
Daim Ntawv Thov:
⚫Kev tswj hwm sab nraud ceev ceev
⚫Kev qhia thiab kev sim ua qauv qhia
⚫Lub tshuab tsim teeb liab kho qhov muag
⚫Optical RZ, NRZ system
Lub sijhawm tshaj tawm: Lub Kaum Hli-07-2023