Hauv kev sib txuas lus, kev sib txuas ntawm hluav taws xob sib txuas ntawm cov hlau xaim hluav taws xob raug txwv zoo heev vim muaj qhov cuam tshuam xws li electromagnetic cuam tshuam, inter-code crosstalk thiab poob, thiab cov nqi xaim.
Yog li ntawd, kev sib kis ntawm optical tau yug los. Optical kis tau tus mob muaj qhov zoo ntawm qhov siab bandwidth, muaj peev xwm loj, kev sib koom ua ke yooj yim, tsis tshua muaj kev sib raug zoo, electromagnetic compatibility, tsis muaj crosstalk, lub teeb yuag, me me, thiab lwm yam, yog li cov khoom siv kho qhov muag tau dav siv hauv cov teeb liab kis.
Basic qauv ntawm optical module
Ntawm lawv, qhov kho qhov muag module yog cov cuab yeej tseem ceeb hauv kev sib kis ntawm fiber ntau, thiab nws cov ntsuas ntau yam txiav txim siab qhov kev ua tau zoo ntawm kev sib kis. Optical module yog cov cab kuj siv rau kev sib kis ntawm covhloovthiab cov cuab yeej, thiab nws lub luag haujlwm tseem ceeb yog hloov lub teeb liab hluav taws xob ntawm lub cuab yeej mus rau hauv lub teeb liab optical ntawm qhov kawg xa tawm. Cov qauv hauv paus muaj ob ntu: "lub teeb emitting tivthaiv thiab nws lub voj voog tsav tsheb" thiab "lub teeb tau txais thiab nws qhov tau txais circuit".
Lub optical module muaj ob txoj kev, uas yog lub transmitting channel thiab txais channel.
Kev sib xyaw ua ke thiab kev ua haujlwm ntawm cov channel xa tawm
Lub transmitting channel ntawm optical module yog tsim los ntawm ib qho hluav taws xob teeb liab input interface, lub laser tsav Circuit Court, ib qho impedance txuam Circuit Court thiab ib tug laser tivthaiv TOSA.
Nws txoj hauv kev ua haujlwm yog cov khoom siv hluav taws xob sib txuas ntawm cov xaim hluav taws xob, kev sib txuas ntawm cov teeb liab hluav taws xob tau ua tiav los ntawm cov hluav taws xob cuam tshuam hluav taws xob, thiab tom qab ntawd lub laser tsav Circuit Court nyob rau hauv lub transmitting channel yog modulated, thiab ces lub impedance txuam ib feem yog siv rau impedance. txuam ua kom tiav qhov kev hloov kho thiab tsav ntawm lub teeb liab, thiab thaum kawg Xa lub laser (TOSA) electro-optical hloov dua siab tshiab rau hauv cov teeb liab kho qhov muag rau qhov teeb liab kis tau tus mob.
Kev sib xyaw thiab kev ua haujlwm ntawm cov channel tau txais
Cov khoom siv kho qhov muag tau txais channel muaj cov khoom siv kho qhov muag pom ROSA (suav nrog photodetection diode (PIN), transimpedance amplifier (TIA)), impedance txuam Circuit Court, limiting amplifier Circuit Court thiab hluav taws xob teeb liab tso zis interface Circuit Court.
Nws txoj hauv kev ua haujlwm yog tias tus PIN hloov cov teeb liab kho qhov muag rau hauv lub teeb liab hluav taws xob hauv qhov sib npaug. TIA hloov cov teeb liab hluav taws xob no mus rau qhov hluav taws xob hluav taws xob, thiab ua kom lub zog hloov hluav taws xob hloov mus rau qhov xav tau amplitude, thiab xa mus rau qhov limiter los ntawm impedance txuam Circuit Court Amplifier Circuit Court ua kom tiav qhov rov ua kom zoo dua thiab rov kho cov teeb liab, txhim kho cov teeb liab- to-suab nrov piv, txo qhov yuam kev me ntsis, thiab thaum kawg lub hluav taws xob interface Circuit Court ua tiav cov teeb liab tso zis.
Kev siv ntawm optical module
Raws li cov cuab yeej tseem ceeb rau kev hloov pauv photoelectric hauv kev sib txuas lus kho qhov muag, cov khoom siv kho qhov muag tau dav siv hauv cov ntaub ntawv chaw. Cov chaw zov me nyuam ib txwm siv 1G / 10G low-speed optical modules, thaum huab cov ntaub ntawv chaw tsuas yog siv 40G / 100G high-speed modules. Nrog rau cov ntawv thov tshiab xws li cov yeeb yaj kiab siab, tshaj tawm hauv xov tooj cua, thiab VR tsav kev loj hlob sai ntawm lub ntiaj teb kev sib txuas hauv network, teb rau cov kev txhim kho yav tom ntej, cov ntawv thov uas yuav tsum tau muaj xws li huab xam, Iaa S cov kev pabcuam, thiab cov ntaub ntawv loj muab cov kev xav tau ntau dua. nyob rau hauv cov ntaub ntawv chaw nyob rau hauv cov ntaub ntawv kis tau tus mob, uas yuav muab yug rau optical modules nrog ntau dua kis tau tus mob nyob rau hauv lub neej yav tom ntej.
Feem ntau, thaum peb xaiv cov khoom siv kho qhov muag, peb feem ntau xav txog yam xws li cov xwm txheej ntawm daim ntawv thov, cov ntaub ntawv xa tawm tus nqi, hom kev sib txuas, thiab kev sib kis ntawm qhov muag (hom fiber ntau, xav tau lub zog kho qhov muag, nruab nrab wavelength, laser hom) thiab lwm yam.