Niaj hnub no, nrog kev txhim kho txuas ntxiv thiab txhim kho cov khoom siv kho qhov muag fiber ntau, PON (passive optical fiber network) tau dhau los ua ib txoj hauv kev tseem ceeb los nqa broadband kev pabcuam network.PON muab faib ua GPONthiabEPON. GPON tuaj yeem hais tias yog qhov hloov kho tshiab ntawm EPON.Kab lus no, etu-link, coj koj nkag siab txog GPON optical module.
Ua ntej tshaj plaws, GPON thev naus laus zis yog qhov zoo tshaj rau EPON raws li kev siv bandwidth, tus nqi, kev pabcuam ntau yam, OAM ua haujlwm thiab lwm yam.GPON siv scrambling code raws li kab code, tsuas yog hloov cov code yam tsis tau nce tus lej, yog li tsis muaj bandwidth poob.Hais txog tus nqi me ntsis, tus nqi qis nrog Gigabit tus nqi siab ceev.Vim nws daim ntawv ntim tshwj xeeb, nws tuaj yeem txhawb nqa ATM cov kev pabcuam thiab IP kev pabcuam zoo.OAM muaj cov ntaub ntawv nplua nuj, suav nrog kev tso cai bandwidth faib, kev faib tawm dynamic bandwidth (DBA), kev saib xyuas txuas, kev tiv thaiv kev hloov pauv, hloov pauv tseem ceeb, thiab ntau lub tswb ua haujlwm.
GPON system optical module yuav tsum tau muab faib ua peb theem: A, B, thiab C. Qhov ntsuas qhov muag ntawm txhua qib sib txawv.Tam sim no, nws feem ntau muab faib ua chav kawm b + thiab c +.Qhov tau txais lub zog ntau ntawm ONU sab feem ntau yog li 1-2dBm tsawg dua li ntawm OLT sab.Qhov sib txawv yog raws li nram no:
Lub luag haujlwm tseem ceeb ntawm lubGPON UA optical module yog txais thiab emit lub teeb, uas yog paub los ntawm lub laser, hloov lub modulated hluav taws xob teeb liab mus rau hauv ib tug optical teeb liab thiab input nws mus rau hauv lub optical fiber network rau kis tau tus mob.Lub receiver tau txais lub teeb, ua kom pom lub teeb pom kev zoo thiab hloov mus rau hauv lub teeb liab hluav taws xob rau lub kaw lus rau kev ua cov teeb liab kom tau txais cov ntaub ntawv muaj txiaj ntsig.Cov pob hom yog SFP, SC interface, tus nqi sib kis yog 1.25g / 2.5g, qhov kis tau tus mob tuaj yeem ncav cuag 20 km.Kev xa tawm wavelength yog 1310nm thiab tau txais wavelength yog 1490nm.DDM cov kev kuaj mob digital tau txais kev txhawb nqa, thiab kev ua haujlwm kub ntawm qib lag luam (0 ° C - 70 ° C) thiab qib kev lag luam (-40 ° C - + 85 ° C) yog xaiv tau.
Lub GPON OLT optical module yog ntim nrog SFP, SC interface, 2.5g / 1.25g kis tus nqi, 20km kis nrug deb, 1490nm kis tau tus mob wavelength, 1310nm tau txais wavelength, thiab kev txhawb nqa rau DDM cov kev kuaj mob muaj nuj nqi, ua rau nws haum rau kho qhov muag kab terminals.
Cov saum toj no yog cov kev paub piav qhia ntawm GPON optical module coj los ntawm Shenzhen HDV photoelectric Technology Co., Ltd. Cov khoom module tsim los ntawm lub tuam txhab npog optical fiber modules, Ethernet modules, Optical fiber ntau transceiver modules, optical fiber nkag modules, SSFP optical modules, thiabSFP optical fibers, thiab lwm yam. Cov khoom lag luam saum toj no tuaj yeem muab kev txhawb nqa rau cov xwm txheej sib txawv.Ib pab neeg R & D muaj zog thiab muaj zog tuaj yeem pab cov neeg siv khoom nrog cov teeb meem kev lag luam, thiab pab pawg ua lag luam muaj kev xav thiab kev ua haujlwm tuaj yeem pab cov neeg siv khoom tau txais kev pabcuam zoo thaum lub sijhawm sib tham ua ntej thiab ua haujlwm tom qab tsim khoom.Zoo siab txais tos koj tiv tauj peb rau txhua yam kev nug.