Lub thawv fiber ntau lub davhlau ya nyob twg (FTB) yog lub kaw lus compact uas txiav tawm, splices, thiab teeb tsa cov fiber ntau optic cables ntawm qhov kawg ntawm lub cable khiav.Nws txuas cov xaim fiber ntau rau pigtails los ntawm fusion splicing, ces xa cov pigtails mus rau cov chaw nres nkoj adapter qhov chaw cords ntsaws. Feem ntau cov neeg yuav khoom tsis tawm tsam nrog cov ntsiab lus no. Lawv tawm tsam nrog kev xaiv hom zoo, suav chaw nres nkoj, hom adapter, thiab qib kev tiv thaiv rau lawv qhov chaw teeb tsa tshwj xeeb - thiab qhov ntawd yog qhov feem ntau ntawm cov teeb meem kev xa tawm tsis pub dhau pib.
Cov lus qhia no tsom rau cov kev txiav txim siab uas tseem ceeb thaum qhia thiab txhim kho fiber ntau lub thawv, es tsis rov hais dua cov ntsiab lus koj tuaj yeem nrhiav tau ntawm cov ntaub ntawv cov khoom lag luam.
Dab tsi yog qhov tseeb hauv Fiber Terminal Box
Txhua FTB, tsis hais hom lossis qauv, muaj peb pawg ua haujlwm. Lub vaj tsev muab kev tiv thaiv lub cev thiab ib puag ncig. Lub splice tais tswj cov fusion splices ntawm cable fibers thiabfiber ntau optic pigtails. Thiab lub vaj huam sib luag adapter nthuav tawm cov chaw nres nkoj txuas mus rau lub ntiaj teb sab nraud.
Cov khoom siv vaj tse nyob ntawm qhov chaw nruab nrab. Cov chav nyob sab hauv tsev feem ntau siv ABS lossis PC + ABS cov khoom sib xyaw: lub teeb yuag, nplaim taws- retardant, pheej yig. Cov chav nyob sab nraum zoov xav tau UV-stabilized polymer nrog roj hmab- kaw gaskets los yog txias-kho cov hlau nrog electrostatic tsuag txheej. Qhov txawv tsis yog tshuaj pleev ib ce. Sab hauv tsev - ntsuas ABS lub thawv rau ntawm phab ntsa sab nrauv yuav pib chalking thiab tawg tsis pub dhau 18 lub hlis hauv lub hnub- qhov chaw raug, thiab thaum lub foob tsis ua haujlwm, noo noo mus txog qhov sib txuas. Thaum ntawd lub thawv tsis tiv thaiv dab tsi.
Lub tais splice yog qhov chaw ua haujlwm kho qhov muag tshwm sim. Cable fibers raug stripped, cleaved, thiab fusion spliced rau pigtail fibers nyob rau hauv ib tug neeg splice tuav. Cov fiber ntau tau coiled rau hauv cov voj voog cia. Ob tus lej tseem ceeb ntawm no: muaj pes tsawg qhov sib txuas ntawm lub tais tuaj yeem tuav tau, thiab seb txoj kev sib txuas puas tswj hwm qhov qis qis qis. Standard G.652D singlemode fiber ntau xav tau yam tsawg 30 hli khoov vojvoog. Khoov-insensitive G.657A2 fiber ntau tolerates tsawg li 10 hli, uas yog vim li cas nws tau dhau los ua lub neej ntawd hauv nruj-qhov chaw FTB tsim. Ib lub tais uas yuam cov fibers rau hauv txoj hlua nruj dua li cov kev txhawb nqa fiber ntau yuav qhia txog kev poob ntawm macrobend - poob uas tshwm sim ntawm OTDR kab tab sis yuav luag tsis tuaj yeem kho yam tsis muaj re{14}}splicing.
Lub vaj huam sib luag adapter tuavfiber ntau optic adapters- cov qhov (socket) uas lees txais cov hlua khi los ntawm cov khoom siv hauv qab. SC / APC adapters yog tus qauv rau FTTH thiab PON tes hauj lwm vim tias lawv 8-degree angled polish thawb rov qab poob qis dua −60 dB, uas tseem ceeb rau kev sib kis tau zoo. LC adapters tseem nyob hauv cov ntaub ntawv chaw ib puag ncig uas qhov chaw nres nkoj ceev yog qhov tseem ceeb. Kev sib xyaw adapter hom nyob rau hauv ib qho FTB yog technically ua tau nrog hybrid adapters, tab sis nws tsim tsis meej pem thaum lub sij hawm txij nkawm thiab yuav tsum tau zam tshwj tsis yog tias muaj ib qho laj thawj meej. Yog tias koj tsis paub meej qhov twg txuas ecosystem koj qhov chaw xav tau, qhov kev tawg ntawm qhov noplaub hom fiber ntau optic connectornpog cov kev sib pauv.
Hom Fiber Terminal Box - thiab Thaum Txhua Tus Pom Zoo
FTB kev faib tawm tsis yog qhov nyuaj, tab sis qhov kev xaiv tsis ncaj ncees rau ib puag ncig yog ib qho ntawm cov khoom yuam kev tshaj plaws. Ntawm no yog dab tsi cais cov hom tseem ceeb hauv kev xyaum, tsis yog hauv kev xav xwb.
Phab ntsa -mounted FTBsyog cov neeg ua haujlwm ntawm FTTH thiab me - chaw ua haujlwm xa tawm. Lawv ntsia hlau rau ntawm phab ntsa lossis zaum hauv qhov tsis muaj zog -tam sim no cov khoom xa tawm, txhawb 2 txog 24 fiber ntau cores, thiab siv lub flip- qhib lossis tshem tau. Kev teeb tsa yuav siv sij hawm feeb - ob mus rau plaub lub hau ntswj thiab lub caj pas cable - uas yog vim li cas lawv thiaj li tau teev nyob rau hauv siab - ntim cov tsev nyob qhov twg ib qho - tus nqi ua haujlwm yuav tsum nyob qis. Kev lag luam tawm yog txwv qhov chaw splice tais: yog tias koj xav tau kev sib koom ua ke PLC splitter lossis tuav ntau tshaj 24 cores, phab ntsa-mount lub thawv tau ceev ceev.
Khib -mounted FTBsmus rau hauv tus qauv 19-inch racks hauv cov chaw khaws ntaub ntawv, chaw ua haujlwm hauv nruab nrab, thiab chaw nyob hauv xov tooj. Lawv swb tawm rau kev nkag mus, muab qhov chaw nres nkoj ntau dua (24, 48, mus txog 96 fibers), thiab txhawb nqa ob qho tib si kev sib txuas thiab kev sib txuas. Tus nqi ntxiv rau ib chav tsev yog tsim nyog nyob rau hauv ib puag ncig uas kev tswj hwm cable kev qhuab qhia thiab yav tom ntej scalability outweigh tus nqi ntawm lub enclosure.
Sab nraum zoov FTBsyog tsim rau ncej-mount lossis sab nrauv phab ntsa-mount daim ntaub ntawv. Sealed gaskets, UV-cov plhaub tiv thaiv, corrosion- cov khoom siv pov thawj, thiab kev ua haujlwm kub siab los ntawm kwv yees li −40℃rau +75℃. Qhov ntsuas IP yog ib qho tseem ceeb tshaj plaws ntawm no - thiab ib qho ntawm feem ntau yuam kev. Lub thawv IP54-rated ua haujlwm nyob rau hauv ib txoj kev hauv tsev. Ib tug ncej ntawm txoj kev loj ntawm ntug hiav txwv xav tau IP68. Kev qhia tshwj xeeb los ntawm daim ntawv lo ("sab nraum qhov ntsuas") es tsis yog los ntawm qhov chaw tiag tiag yog li cas lub thawv tsis ua haujlwm hauv thaj teb.
Desktop FTBsyog lub teeb yuag, portable units rau qhov chaw sim, chaw nres tsheb ib ntus, lossis qhov chaw me me uas qhov kev txuas mus tas li yog qhov tsis zoo. Lawv txi ib puag ncig tiv thaiv kom yooj yim.
Kev xaiv ceev ceev
| Deployment Scenario | Hom kev pom zoo | Common Port suav | Adapter | Qhov yuav tsum tau muaj |
|---|---|---|---|---|
| Sab hauv FTTH (ib lub tsev) | Phab ntsa-mount | 4 / 8 | SC/APC | Compact loj, splice tais rau 1-2 cables |
| Chav tsev / MDU riser | Phab ntsa-mount lossis sab nraum zoov | 8 / 12 / 24 | SC/APC | Splitter compatibility, cable nkag suav |
| Cov ntaub ntawv chaw / chaw ua haujlwm central | Khib -mount | 24 / 48 / 96 | LC | Chaw nres nkoj ceev, swb- tawm lub tais nkag |
| Sab nraum zoov faib point | Sab nraum zoov kaw lub thawv | 8 / 12 / 24 | SC/APC | IP65+ ntsuam xyuas, UV thiab noo noo tsis kam |
| Ib ntus / kuaj qhov chaw | Desktop | 4 / 8 / 12 | Ntau yam | Portability, ceev teeb |
Txoj cai tseem ceeb ntawm tus ntiv tes xoo: populate lub thawv rau txog 60-70% ntawm lub peev xwm nyob rau ib hnub. Lub hauv paus tseem tshuav absorbs kev loj hlob yav tom ntej yam tsis muaj kev sib pauv hloov pauv tag nrho.
Ob peb "tsis txhob" cov lus qhia txuag nyiaj ntau dua li ib daim ntawv xaiv. Tsis txhob siv phab ntsa -mount FTB yog tias koj twb paub PLC splitter xav tau kom haum rau hauv - qhov chaw tais yuav yog qhov zoo tshaj plaws. Tsis txhob xav tias IP65 npog txhua qhov chaw sab nraum zoov; Cov ncej mounts thiab cov chaw ntug dej hiav txwv xav tau IP68. Thiab tsis txhob ua yuam kev rau LC adapters vim tias lawv me dua yog tias qhov seem ntawm lub xaib tau tsim nyob ib puag ncig SC / APC - ib qho kev sib txuas tsis sib haum raug nqi ntau dua los kho dua li qhov ceev ntawm qhov nce yog tsim nyog.
Common Fiber Terminal Box xaiv yuam kev
Feem ntau cov teeb meem FTB tsis yog tshwm sim los ntawm kev kho vajtse tsis zoo. Lawv yog tshwm sim los ntawm specification yuam kev ua ntej lub thawv puas tau xaj. Plaub qhov yuam kev tuaj ntau zaus.
Xaiv hom adapter yam tsis tau kuaj xyuas cov khoom seem uas twb muaj lawm.Hauv cov haujlwm uas FTB tau teev tseg los ntawm ib pab pawg thiab cov hlua khi raug xaj los ntawm lwm tus, qhov no mus tsis ncaj ncees lawm ntau dua li qhov yuav tsum tau ua. Lub vaj huam sib luag SC / APC tsis muaj txiaj ntsig yog tias lub xaib twb muaj lub tub rau khoom puv ntawm SC / UPC jumpers. Lub kaum sab xis - polished thiab tiaj tus - polish ferrules yuav ua rau lub cev sib raug zoo, tab sis qhov sib txawv ntawm huab cua ntawm lub interface tsim ib qho kev xav rov qab uas degrades PON upstream kev ua tau zoo. Tshawb xyuas qhov txuas ecosystem ua ntej xauv hauv lub vaj huam sib luag adapter.
Xaiv cov thawv sab nraum zoov los ntawm kev lag luam daim ntawv lo es tsis txhob siv qhov ntsuas IP tiag."Sab nraum zoov ntsuas" tsis yog chav kawm IP. Ib lub thawv uas sau tias "sab nraum zoov" tej zaum yuav yog IP54, uas txhais tau hais tias nws tiv taus cov dej txaws tab sis tsis muaj nag los yog kev ntxhua khaub ncaws. Yog tias qhov chaw teeb tsa raug huab cua, txheeb xyuas tus lej IP tshwj xeeb tiv thaiv cov xwm txheej lub thawv yuav raug fim - tsis yog cov xwm txheej ntawm daim ntawv spec xav.
Kev kwv yees qhov chaw nres nkoj muaj peev xwm.Lub thawv 12-core yog me ntsis kim dua li 8-core box. Hloov lub 8-core lub thawv nrog 12-core lub thawv ob xyoos tom qab - suav nrog lub tsheb yob, rov ua dua, thiab lub sijhawm poob - nqi ntau zaus ntau dua li tus nqi sib txawv. Spec rau kev loj hlob.
Ignoring splitter form factor compatibility.Yog tias txoj kev npaj xa mus hu rau kev sib koom ua ke aPLC optical splitternyob rau hauv lub thawv davhlau ya nyob twg, lub splice tais layout thiab enclosure qhov tob yuav tsum haum rau lub splitter module - feem ntau yog ib tug mini- raj lossis ABS cassette daim ntawv foos. Tsis yog txhua tus FTB yog tsim los rau qhov no. Txheeb xyuas qhov loj me thiab lub tais teeb tsa ua ntej xav tias lub splitter yuav haum.
Integrating PLC Splitters Hauv Fiber Terminal Boxes
Ntau tus neeg ua haujlwm FTTH tam sim no muab cov haujlwm sib cais thiab kev txiav tawm hauv tib lub kaw lus. Es tsis txhob khiav fiber ntau los ntawm ib tug cais cais txee rau ib tug downstream davhlau ya nyob twg lub thawv, lub splitter zaum ncaj qha rau ntawm lub FTB splice tais. Lub feeder cable fiber txuas mus rau lub splitter input; txhua qhov tso zis splitter yog fusion spliced rau lub pigtail uas xaus rau ntawm lub vaj huam sib luag adapter. Cov neeg siv txuas nrog cov kab txuas txuas rau hauv pem hauv ntej - vaj huam sib luag adapters.
Qhov no ua haujlwm vim tias PLC splitters yog wavelength - ywj siab hla 1260–1650 nm kev khiav hauj lwm band. Ib qho kev sib koom ua ke FTB tuaj yeem tswj GPON nqes qis ntawm 1490 nm, nce toj ntawm 1310 nm, thiab RF video overlay ntawm 1550 nm ib txhij. Tsis xav tau kev lim dej ntxiv.
Tsawg dua qhov thaiv txhais tau tias tsawg dua cov ntsiab lus sib txuas, txoj hauv kev luv dua, thiab cov ntaub ntawv yooj yim dua - kev teeb tsa tsawg dua, kev saib xyuas tsis tu ncua. Qhov txwv yog qhov loj me me: phab ntsa-mountfiber optic davhlau ya nyob twg boxnrog ib tug 1 × 8 splitter yoojyim chav tsev rau spare fiber cia, yog li lub installation yuav tsum huv si. Ntawm cov haujlwm uas suav qhov chaw nres nkoj, hom adapter, thiab kev sib cais ntawm txhua qhov yuav tsum tau lees paub ua ke, lub thawv layout tseem ceeb tshaj qhov peev xwm ntawm cov ntaub ntawv. Rau cov ncauj lus kom ntxaws mechanics ntawm yuav ua li cas cov teeb liab taug kev los ntawm cov ntaub thaiv npog, qhov kev taug kev ntawm noYuav ua li cas fiber optic davhlau ya nyob twg lub thawv ua haujlwmnpog txoj kev teeb liab sab hauv.
Kev teeb tsa thiab kev saib xyuas kev coj ua uas tseem ceeb
Ob txoj kev teeb tsa ua rau muaj teeb meem feem ntau hauv teb, thiab ob qho tib si zam tau.
Thawj yog kis kab mob splicing. Ib qhov qias neeg fiber ntau qhia txog 0.3–0.5 dB ntawm qhov kev tso tawm ntau dhau ntawm ib qho kev sib txuas - txaus los thawb qhov txuas PON marginal hauv qab qhov kev nkag siab ntawm tus neeg txais. Ntxuav txhua fiber ntau kawg nrog lint -dawb so thiab IPA ua ntej cleaving. Tshawb xyuas nrog lub tshuab ntsuas fiber ntau tom qab cleaving. Yog tias pom muaj kab mob kis tau, ntxuav thiab rov qab-cleave. Lub sij hawm siv rau cov kauj ruam no yog qhov tsis tseem ceeb piv rau lub sij hawm siv los daws qhov teeb meem siab - poob splice tom qab lub thawv kaw lawm.
Qhov thib ob yog cable caj pas torque. Tshaj -tightening crushes lub cable sheath thiab stresses cov fibers hauv. Hauv qab - zawm tso cai rau cov dej nkag hauv lub hlis. Ua raws li cov chaw tsim khoom cov nqi torque. Qhov no tsis yog ib kauj ruam uas "tes nruj ntxiv me ntsis" yog ib qho kev hloov tau rau lub torque wrench.
Rau kev saib xyuas tsis tu ncua, fiber ntau lub thawv ntawv yog qhov tsis muaj zog thiab yuav tsum tau ua tib zoo saib - tab sis tsis yog xoom. Lub sijhawm ua tau zoo: kev tshuaj xyuas qhov muag thiab qhov txuas kawg- ntxuav lub ntsej muag txhua 12-18 lub hlis rau kev teeb tsa sab hauv tsev, txhua 6 lub hlis rau sab nraum zoov lossis hnyav- thaj chaw ib puag ncig. Tshawb xyuas cable gland seals rau tawg lossis compression teeb. Yog tias koj khaws OTDR cov ntaub ntawv hauv paus rau txhua lub thawv, cov kab sib piv yuav ntes cov splice degradation ib ntus ntev ua ntej nws ua rau cov neeg siv tsis raug.
Cov lus nug nquag
Q: Kuv puas xav tau SC / APC lossis SC / UPC Adapters Hauv FTTH Fiber Terminal Box?
A: SC / APC yuav luag txhua qhov xwm txheej. PON architectures rhiab rau cov kev xav rov qab, thiab SC / APC's angled ferrule xa rov qab poob qis dua -60 dB piv rau SC / UPC's −50 dB. Ib qho kev zam tsuas yog taw tes - rau - taw tes rau Ethernet kev xa tawm uas cov peev nyiaj xav tau ntau dua kev zam txim.
Q: Dab tsi yog qhov txawv ntawm Ib Lub Thawv Fiber Terminal thiab Fiber Splice Kaw?
A: Lub thawv fiber ntau lub thawv txiav tawm cov fibers thiab nthuav tawm cov chaw nres nkoj txuas txuas rau thaj chaw nkag. Ib qho kev sib txuas kaw tiv thaiv nruab nrab -span splices ntawm ob ntu cable tab sis tsis muab cov khoom txuas. Yog tias koj xav tau ntsaws rau hauv cov hlua khi los yog tso cov cables ntawm qhov chaw, koj xav tau lub thawv davhlau ya nyob twg. Yog tias koj tsuas yog koom nrog ob lub cable khiav hauv qhov chaw faus lossis huab cua, qhov sib txuas kaw yog qhov khoom raug.
Q: Kuv Yuav Xaiv Li Cas Ntawm 8-Core, 12-Core, Thiab 24-Core FTBs?
A: suav cov fibers uas koj xav tau txiav tawm hnub no, tom qab ntawd ntxiv 30-50% rau kev loj hlob yav tom ntej. Ib qho - tsev neeg FTTH poob feem ntau yuav tsum muaj 4-core lossis 8-core box. MDU riser pab 6-8 units xav tau 12 lossis 24 cores. Yog hais tias lub PLC splitter yuav raug ntsia rau hauv lub thawv, lub splitter tso zis suav txiav txim qhov tsawg kawg nkaus qhov chaw nres nkoj yuav tsum tau - ib tug 1 × 8 splitter xav tau yam tsawg kawg nkaus 8 output ports ntxiv rau ib tug pass-dhau fibers.
Q: Puas yog IP65 txaus rau txhua qhov kev teeb tsa sab nraum zoov Fiber Terminal Box?
A: IP65 tuav feem ntau cov chaw nyob sab nraum zoov - hauv qab eaves, sab hauv cov txee, lossis ntawm cov phab ntsa nrog qee qhov kev tiv thaiv saum taub hau. Rau tag nrho cov ncej mounts, kev teeb tsa ntawm ntug dej hiav txwv, lossis thaj chaw uas muaj plua plav hnyav lossis muaj cov khoom siv, IP68 nrog roj hmab- kaw gaskets yog qhov kev xaiv zoo dua. Tus nqi sib txawv me me piv rau tus nqi ntawm kev hloov chaw.
Q: Ib lub thawv Terminal puas tuaj yeem txhawb nqa ob qho tib si Fiber Splicing thiab PLC Splitter Mounting?
A: Yog, ntau tus qauv tsim rau qhov no. Lub tais splice yuav tsum muaj ib qho chaw tshwj xeeb los yog mounting bracket rau lub mini- raj lossis ABS cassette splitter. Txheeb xyuas qhov ntev ntawm sab hauv ua ntej xaj - tsis yog txhua qhov FTB enclosures muaj qhov tob txaus kom haum rau lub splitter module nrog rau tus qauv splice tuav thiab fiber ntau cia loops.
