Qee cov teeb meem hais txog kev sib xyaw ntawm cov kho qhov muag

Sab hauv qauv ntawm optical module

Cov khoom xa hluav taws xob thiab cov kis tau txais yog transceivers kho qhov muag. Qhov tseem ceeb tshaj plaws yog laser, thiab tseem muaj cov kuaj thiab amplifiers. Laser yog qhov tseem ceeb ntawm qhov kho qhov muag module, thiab nws tseem yog qhov raug nqi qis tshaj plaws thiab cov khoom lag luam siab. Feem ntau hais lus, lub siab dua qhov khoom siv high-end optical module, qhov sib piv ntawm cov lasers siab dua hauv cov qauv tsim nqi. Tsis tas li ntawd, muaj cov ntxaij lim dej, cov ntiv tes kub, PCB lub rooj tsavxwm thiab lub ntsuas hluav taws xob, resistors, inductors, EEPROM, cov khoom seem thiab cov zais zais, kua nplaum thiab lwm yam.

Vim li cas qhov thev naus laus zis thev naus laus zis ntawm optical module / AOC / DAC tsawg?

Vim tias qee cov khoom lag luam siab, muaj ob peb lub chaw tsim khoom hauv ntiaj teb, xws li 400g optical module. Tsis tas li ntawd, rau tib cov khoom lag luam, xws li 100g ib-hom, thaum cov neeg tsim khoom feem ntau tsuas tuaj yeem ua tiav ntau tshaj 10 km, ob peb cov neeg tsim khoom muaj peev xwm ua tiav 40 km. Tab sis rau feem coob ntawm cov khoom neeg laus, qhov pib ntawm thaj teb no yog qhov tsawg heev.

Cov laj thawj rau qhov tsis tshua muaj qhov tsawg yog qhov kho qhov muag kho qhov muag / AOC / DAC tuaj yeem pom tau tias yog qhov khoom lag luam kho vajtse ntshiab. Txawm hais tias MCU tus maub los tseem khiav tus tsav, nws yog qhov yooj yim thiab qauv. Rau cov kws tsim qauv, cov khoom siv tseem ceeb hauv cov khoom siv kho vajtse no zoo heev hauv kev daws teeb meem rau ntau cov khoom lag luam paub tab, thiab tsis muaj kev txwv ntau dhau. Qhov no txawv ntawm qhov hloov. Txawm hais tias txhua tus hloov hluav taws xob tuaj yeem tau txais tib lub CPU thiab hloov chip tsis muaj qhov sib txawv, qhov sib txawv hauv tag nrho cov pawg tsim thiab cov software software ua rau muaj qhov sib txawv hauv qhov zoo thiab muaj peev xwm.

GG # 39; s qhov sib txawv li cas?

Cov teeb meem sib xyaw ntawm cov sib txawv thiab cov khoom sib txawv yog qhov txawv heev. Txawm tias cov qauv ntawm tib lub chaw tsim khoom thiab tus qauv qub yuav muaj qhov sib txawv ntawm tib cov khoom siv. Hauv kev hais, nws yog qhov sib txawv ntawm yam xws li tshuab zoo thiab muab khoom zoo.

Kev ua tau zoo ntawm PCB, qhov zoo ntawm lub peev xwm tiv taus, qhov ntev, qhov dav thiab tuab ntawm cov ntiv tes kub, qhov zoo ntawm ham thiab txawm hais tias cov kua nplaum tsis zoo tag nrho cuam tshuam cov khoom zoo. Piv txwv li, qhov voltage thiab jitter tam sim no, thiab qhov kub nce yuav ua rau muaj teeb meem.

Cov txheej txheem sib txawv, xws li cob txuas txuas hom thiab SMD txuas txuas hom, muaj kev xaiv sib txawv ntawm txhua qhov chaw tsim khoom. Txawm tias cov khoom sib txawv ntawm cov tib cov khw tsim muaj cov kev xaiv sib txawv. Lawv yuav ua rau muaj qhov sib txawv ntawm cov nqi, kub dissipation thiab siab kub ua hauj.

Qhov sib txawv ntawm cov khoom siv kuaj sim khoom, tus naj npawb ntawm cov khoom siv, ntau yam kev nplua nuj, qib ntawm kev siv tshuab, kev nplua nuj ntawm kev hloov pauv / server network daim npav thiab lwm yam khoom siv thib peb yuav ua rau muaj qhov sib txawv ntawm cov txiaj ntsig thiab sib txawv.

Dab tsi tiag tiag pom qhov sib txawv hauv cov peev txheej kev ntawm cov tuam ntxhab feem ntau hauv cov khoom lag luam siab, xws li 100g / 400g modules, tshwj xeeb tshaj yog cov nyob deb. Txog cov khoom lag luam dav dav, cov tuam ntxhab loj yuav nqis peev hauv cov khoom siv thiab R& amp; D ua ntej kom mus ntxiv rau qhov zoo tshaj plaws ua ntej. Kev txwv muaj peev xwm tsim tawm, cov tshuab tsim hluav taws xob tseem yuav muab qhov tseem ceeb los muab cov chips thiab lasers rau cov chaw tsim khoom loj, yog li cov tuam txhab loj feem ntau ua cov tuam txhab me hauv cov khoom lag luam tshiab tsawg kawg ib xyoos.

Dab tsi yog qhov txawv ntawm AOC thiab optical module?

AOC (nquag kho qhov muag cable) yog ib qho qauv txuas rau ob qhov kawg ntawm qhov kho qhov muag, uas yog sib npaug rau kev sib xyaw ntawm xaim thiab module.

AOC tam sim no dav siv los ntawm ntau tus neeg muas zaub vim nws pheej yig dua ob ntu ntxiv rau ib lub fiber.

Los ntawm cov tswv yim kev siv tshuab, zoo li cov kho qhov muag, AOC tseem raug tsav los ntawm lub teeb, thiab cov khoom siv hauv nws tsis tuaj yeem tsawg dua. Lub ntsiab sib txawv ntawm lawv yog qhov nyuaj ntawm thev naus laus zis. Rau qhov khoos phis tawm kho qhov muag, hauv lub cuab yeej sab hauv txuas, vim tias qhov teeb meem kawg xaus yuav txawv heev, yog li nws yuav tsum tau hloov kho rau cov xwm txheej sib txawv, qhov siab yuav tsum tau ua rau laser thiab siab nyuaj ntawm kev ua haujlwm ua haujlwm. AOC, vim hais tias qhov xaus kawg yog qhov ruaj khov, tsis tas yuav xav txog ntau yam xwm txheej. Nws muaj qhov yuav tsum tau qis rau lasers, cov khoom siv sib txuam yooj yooj yim thiab kev siv ua haujlwm yooj yim, uas tuaj yeem txo qee tus nqi. Vim li no tus nqi ntawm AOC yog tus nqi qis dua li ntawm ob lub qauv + ib lub fiber.

Txawm hais tias tus nqi ntawm AOC qis dua, piv nrog optical module, AOC kuj muaj qhov tsis xws luag. Piv txwv, hauv AOC cable, yog tias muaj teeb meem nrog ib qho module lossis kho qhov muag, nws yuav tsum tau hloov tag nrho, thaum lub khoos phis tawj tsis tas yuav. Tshwj xeeb tshaj yog nyob rau qee qhov chaw ib puag ncig uas cov xov hluav taws xob tau ua tiav, nws yog qhov kev kub ntxhov tshaj plaws kom rub tawm ntawm AOC cable. Ntxiv rau, yog tias cov khoom siv ntawm ob hnub xaus ntawm cov tuam ntxhab sib txawv, cov qauv ntawm cov tuam ntxhab sib txawv tuaj yeem muas tau nyias kom tsis txhob muaj qhov sib haum Yog tias siv cov tshuaj AOC, tus neeg muab khoom AOC tsuas yog sau cov cai ua ntej. Nws tseem yuav tau tsim nyog khij rau AOC cable thiab qhov kawg sib haum rau cov chaw tsim khoom twg.

Qhov sib txawv ntawm DAC thiab AOC yog dab tsi?

DAC (ncaj qha txuas cable) yog qhov qauv ntawm ob qhov kawg, thiab cov xov hlau nyob hauv nruab nrab tsis yog optical fiber, tab sis tooj liab cable.

AOC hu ua nquag cable kho qhov muag, thaum DAC tau muab faib ua kom nquag plias thiab ua haujlwm dhau, thiab cov kab hluav taws xob dhau los yog lub dag zog. Qee cov tuam ntxhab ntxiv cov teeb liab ua kom nrov zog, uas yog lub zog tooj liab cable, txhawm rau cia DAC xa xov mus deb.

Hais lus nruj me ntsis, DAC tsis yog rau qeb ntawm cov khoos phis tawm kho qhov muag. Tsis muaj cov lasers, amplifiers, kuaj pom, lossis MCU cov khoom siv sib txawv raws li cov qauv kho qhov muag. Hauv lwm lo lus, DAC, cov khoom tseem ceeb tshaj plaws hauv optical module / AOC, tsis muaj DAC. Tsuas muaj kev tswj kom yooj yim nti rau cov teeb liab hluav taws xob, uas kis tau los ntawm qhov pib thaum kawg. Qhov no yog vim li cas tus nqi ntawm DAC yog tus nqi tsawg dua li uas ntawm optical module thiab AOC.

Peb paub tias thaum lub khoos phis tawm hluav taws xob lossis AOC txhaws rau hauv lub pob hluav taws xob, qhov hloov hluav taws xob, qhov tam sim no, qhov kub thiab txias, tau txais lub zog kho qhov muag thiab kis tau lub zog ntawm lub kho qhov muag tau pom tau nrog cov lus txib ntawm tus hloov. Tab sis yog tias ntxig DAC feem ntau tuaj yeem' t nyeem cov ntaub ntawv no, yog vim li cas? Qhov laj thawj yog tias muaj DDM thaj chaw khaws cia hauv qhov kho qhov muag thiab AOC kom khaws cov ntaub ntawv. Hauv DAC, ntawm ib sab, vim tias nws tsis muaj lub tswv yim ntawm kev tau txais thiab kis lub zog kho qhov muag, ntawm qhov tod tes, tsis muaj lub zog MCU nti, yog li nws tsis tuaj yeem nrhiav qhov kub, voltage thiab tam sim no, yog li DAC feem ntau muaj tsis muaj ntaub ntawv DDM

Vim tias DAC yog tsav los ntawm hluav taws xob, qhov kev ncua deb feem ntau tsis nyob deb, vim tias lub teeb liab hluav taws xob tau yooj yim dua los ntawm qhov kev ncua deb tshaj li lub teeb liab kho qhov muag (tsis muaj peev xwm tiv thaiv kev cuam tshuam), feem ntau tsis pub dhau 5m, tshwj tsis yog cov xaim hluav taws xob ntxiv nrog lub suab nrov. Piv nrog kho qhov muag, teeb liab hluav taws xob tau yooj yim dua cuam tshuam los ntawm qhov deb, ntsuas kub, hluav taws xob, cable folding thiab lwm yam teeb meem, yog li DAC muaj ntau qhov teeb meem yooj yim dua li AOC, uas yog nyob ntawm kev tsav lub peev xwm ntawm ob xaus. Tab sis rau AOC, nws qhov teeb meem tseem ceeb yog tias cov fiber ntau yooj yim tawg, tau kawg, ntau yam ntawm lub teeb ci tam sim no qhov cuam tshuam tau zoo. Yog li no, feem ntau, yog hais tias kev siv ib puag ncig yog tswj tau, qhov kev ncua deb tsis ntev, tus nqi raug, thiab cov teeb meem sib xyaw yuav raug tshem tawm ua ntej, DAC yog qhov kev xaiv zoo.

Tus lej sau encryption ntawm optical module / AOC / DAC yog dab tsi?

Hais lus nruj me ntsis, qhov teeb meem sib xyaw peb feem ntau tham txog tsis zoo tib yam li cov cai sau encryption. Qhov teeb meem sib xyaw hais txog cov teeb meem tau hais saum toj no, vim tias muaj qhov sib txawv ntawm kev siv cov qauv, ua rau tsis sib xws thaum ua haujlwm ua ke, uas tsis yog txhob txwm. Txawm li cas los xij, tus qauv tsis tuaj yeem ua haujlwm ntawm lub cuab yeej vim yog kev sau ntawv encryption, uas yog txhob txwm.

Raws li cov lus txhais hauv kev lag luam tus qauv tshwj xeeb ntawm optical module, muaj ob thaj chaw ntawm 128 byte code sau thaj tsam hauv qhov khoos phis tawj. Ob qhov code sau chaw no khaws ntau cov ntaub ntawv xws li cov chaw tsim khoom, cov qauv, cov lej, DDM cov ntaub ntawv (cov hluav taws xob tau tso cai, tam sim no, ntsuas kub, cov hwj huam luminous thiab qhov tseeb sau qhov tseem ceeb) thiab cov cai siv tau. Ntau cov khoom tsim hluav taws xob tau ua kev txwv tsis pub dhau nyob rau hauv tus tes hloov thiab lwm yam khoom siv hauv network. Tom qab qhov tso tawm kho qhov "optical", nws yuav nyeem cov ntaub ntawv ntawm qhov chaw sau ntawv cheeb tsam hauv qhov kho qhov muag module los ntawm I2C npav ntawm hloov. Los ntawm cov ntaub ntawv no, cov khoom siv tuaj yeem txiav txim siab seb tus qauv puas yog nws tus qauv qub.

Coder

Muaj cov qauv kev lag luam rau qhov chaw sau ntawv cheeb tsam hauv cov khoos phis tawm kho qhov muag (ntau hom ntawm cov qauv kho qhov muag tau sib txawv), thiab kev sib tshuam ncaj qha ntawm cov khoom siv (hloov, router, daim npav network, thiab lwm yam) thiab optical module kuj yog tus qauv (I2C txuj )). Yog li no, raws li txoj kev xav, nws yooj yim heev los ua tus coder, thiab coder yog cov khoom tsim nyog rau cov qauv tuam ntxhab. Dab tsi ntau tus neeg tsis txhob' t paub yog tias tus hloov chaw tsim khoom kuj tuaj yeem siv tus tes hloov qhov ua tus lej sau ntawv, thiab tuaj yeem sau code hauv pob, vim tias tus qauv I2C interface kuj tseem nyob nruab nrab ntawm tus hloov thiab kho qhov muag module. Hauv txoj kev xav, coder tuaj yeem sau cov qauv kho qhov muag ntawm cov chaw tsim khoom a mus rau hauv cov cai ntawm cov chaw tsim khoom B. hauv kev tiv thaiv lwm tus los ntawm kev sau lawv tus kheej cov qauv, cov qauv tsim hluav taws xob tau tsim kev tiv thaiv lo lus zais. Koj tsis paub lo lus zais. Tom qab sau ntawv, ib zaug ntaus ntawv rov pib dua lossis tus qauv hloov dua, sau cov lej cim yuav ploj.