Yog tias koj tau siv sijhawm txhua lub sijhawm los tshuaj xyuas cov qauv tsim kho qhov muag, koj tau pom "1310nm fiber ntau" hauv cov npe khoom, cov ntaub ntawv transceiver, thiab cov ntaub ntawv npaj network. Lub sij hawm tshwm sim tas li - tab sis nws hais txog dab tsi, thiab vim li cas nws tseem ceeb rau koj qhov kev tsim kho tom ntej?
Hauv kev xyaum, 1310nm tsis yog ib pawg fiber ntau cais. Nws yog ibua haujlwm wavelength- yog ib qho tseem ceeb tshaj plaws ntawm cov qhov rais kis tau tus mob hauv fiber ntau optics. CovFiber Optic Association (FOA)sau tseg tias multimode fiber ntau feem ntau txuam nrog 850 nm thiab 1300 nm, thaumtib - hom fiber ntauyog optimized rau 1310 nm thiab 1550 nm. Tus txheej txheem thoob ntiaj tebITU-T G.652piav qhia txog tus qauv - hom fiber ntau raws li nws muaj pes tsawg -dispersion wavelength nyob ib ncig ntawm 1310 nm thiab siv tau nyob rau hauv ob qho tib si 1310 nm thiab 1550 nm cheeb tsam.
Qhov kev sib txawv ntawd tseem ceeb rau kev yuav khoom. Thaum koj pom "1310nm" ntawm ib qho module lossis hauv daim ntawv spec, lub wavelength tsuas yog ib qho sib txawv. Koj qhov kev sib txuas tiag tiag tseem nyob ntawm hom fiber ntau, tus qauv kho qhov muag, thiab cov peev nyiaj poob ntawm txoj kev lub cev.
Dab tsi yog "1310nm Fiber" Tiag tiag?
Cov lus piav qhia ncaj qha tshaj plaws: 1310nm yog hais txog lub wavelength ntawm lub teeb lub transceiver siv los xa cov teeb liab los ntawm fiber ntau optical. Nws tsis yog qib fiber ntau, hom ntawv txuas, lossis ntsuas qhov deb ntawm nws tus kheej. Ib qho kev sib txuas ua tiav yuav tsum muaj tsawg kawg yog peb qhov kev txiav txim siab cais:
- Fiber hom- ib leeg- hom (xws liOS1/OS2 per G.652) lossis multimode (xws liOM3/OM4)
- Optic lossis transceiver standard- piv txwv li, 1000BASE-LX/LH, 10GBASE-LR, los yog BiDi module
- Txuas qhov deb thiab poob nyiaj txiag- uas nyob ntawm cov kab txuas txuas, txuas, splices, thiab txhua thaj chaw nyob hauv txoj kev
Qhov no yog vim li cas "1310nm" ib leeg yeej tsis qhia tag nrho zaj dab neeg. Ob lub modules ob qho tib si sau npe 1310nm tuaj yeem muaj qhov sib txawv ntawm qhov sib txawv vim tias lawv tau tsim los rau txawv IEEE lossis MSA cov qauv.
Vim li cas 1310nm Matters hauv Fiber Optic Networks?
Lub 1310nm wavelength zaum ntawm qhov chaw uas tus qauv - hom fiber ntau (G.652) muaj nwsqis tshaj chromatic dispersion. Chromatic dispersion ua rau optical pulses kis mus deb, uas txwv ceev npaum li cas thiab deb npaum li cas koj kis tau ua ntej lub teeb liab degrades. Ntawm 1310nm, qhov kev sib kis no tsawg kawg nkaus - uas yog vim li cas qhov wavelength no yog qhov kev xaiv luv luv rau luv luv - rau - nruab nrab ib leeg - hom txuas txij li xyoo 1980s.
Nyob rau tib lub sijhawm, fiber ntau attenuation ntawm 1310nm feem ntau nyob ib ncig ntawm 0.35 dB / km ntawm tus qauv G.652 fiber ntau, piv rau kwv yees li 0.20 dB / km ntawm 1550nm. Qhov sib txawv ntawd txhais tau hais tias 1550nm tuaj yeem nqa cov teeb liab mus deb ua ntej lub hwj chim kho qhov muag poob qis dua qhov chaw txais txais. Tab sis rau ntau lub tsev kawm ntawv, kev nkag mus hauv metro, thiab kev lag luam txuas hauv qab 10-20 km, qhov attenuation ntawm 1310nm yog qhov zoo nyob rau hauv kev siv peev nyiaj sib txuas - thiab cov optics yuav raug nqi tsawg dua.
Raws liViaLite Kev Sib Txuas Luspiav qhia, 1550nm lasers yog qhov nyuaj rau kev tsim dua 1310nm lasers, yog li luv luv txuas feem ntau siv 1310nm vim nws muab kev ua tau zoo ntawm tus nqi qis. Kev sib txuas ntev dua qhov kev poob ua qhov tseem ceeb dua yuav txav mus rau 1550nm.
1310nm vs 1550nm vs 850nm: Kev sib piv tswv yim
Feem ntau, cov lus nug tiag tiag tom qab "dab tsi yog 1310nm fiber" yog qhov tseeb:Kuv yuav siv lub wavelength twg rau kuv qhov txuas?
1310nm vs 1550nm
Ob qho tib si 1310nm thiab 1550nm ua haujlwm ntawm ib qho - hom fiber ntau, thiab tus qauv G.652D fiber ntau cog txhawb nqa lub wavelength yam tsis tas yuav tsum tau sib txawv cable. Qhov kev xaiv los mus txuas qhov deb, tus nqi, thiab qhov system architecture:
- 1310nm uamuaj tsawg kawg nkaus chromatic dispersion thiab txo nqi transceiver. Nws ua haujlwm zoo rau kev sib txuas mus txog kwv yees li 10-40 km nyob ntawm tus qauv qauv, thiab tsis tas yuav tsum tau kho qhov muag.
- 1 550nmmuaj qhov qis tshaj ntawm fiber ntau attenuation (~0.20 dB/km), compatibility nrog erbium-doped fiber amplifiers (EDFAs), thiab kev txhawb nqa rau DWDM systems. Nws yog tus qauv xaiv rau ntev -haul caj qaum thiab submarine txuas.
Rau lub tsev kawm ntawv qaum tsev txuas cov tsev 2–10 km sib nrug, 1310nm optics (xws li 1000BASE-LX/LH lossis 10GBASE-LR) feem ntau yog tus nqi ntau tshaj - kev xaiv zoo. Rau ib lub nplhaib metro hla 40-80 km, 1550nm optics nrog lossis tsis muaj amplification tsim nyog.
1310nm vs 850nm
Qhov kev sib piv no yog hauv paus txogsingle-mode piv rau multimodentsiab lus. Lub 850nm wavelength yog tsim los rau luv luv - mus txog multimode fiber ntau txuas siv VCSEL lasers - ib txwm nyob hauv cov chaw zov me nyuam thiab hauv - tsim kev sib txuas. FOA sau tseg tias multimode fiber ntau ua haujlwm ntawm 850nm thiab 1300nm, thaum ib leeg - hom fiber ntau yog optimized rau 1310nm thiab 1550nm.
Yog tias koj ua haujlwm nyob rau hauv ib lub tsev cov ntaub ntawv los yog txuas cov keyboards hla ib qho luv luv (hauv qab 300-550 m), 850nm multimode feem ntau yog txoj kev pheej yig tshaj plaws. Thaum koj ncav cuag qhov ntev tshaj qhov ntawd, lossis yog tias koj xav tau ib qho - hom fiber ntau ncav cuag ntev dua thiab qis dua, 1310nm yog qhov kev xaiv ntuj.
Cov lus sib piv ceev Wavelength
| Parameter | 850nm ua | 1310nm ua | 1 550nm |
|---|---|---|---|
| Hom fiber ntau | Multimode (OM3 / OM4 / OM5) | Tib-mode (G.652); qee qhov MMF | Tib - hom (G.652/G.655) |
| Tej yam attenuation | ~ 2.5–3.0 dB/km (MMF) | ~ 0.35 dB/km (SMF) | ~ 0.20 dB/km (SMF) |
| Chromatic dispersion | Tsis yog thawj qhov txwv (modal dispersion dominates) | Zero ntawm G.652 fiber ntau | ~ 17 ps/(nm·km) ntawm G.652 fiber |
| Hom ncav cuag ntau yam | 100-550 m (nyob ntawm qib fiber ntau) | Txog li 10-40 km (nyob ntawm tus qauv optic) | Mus txog 40–80+ km; amplified links mus deb heev |
| Laser hom | VCSEL | FP los yog DFB laser | DFB lossis EML laser (feem ntau nrog txias) |
| kwv tij optic nqi | qis tshaj | Nruab nrab | Siab dua |
| EDFA amplification | Tsis siv tau | Tsis siv tau | Txhawb nqa |
| Cov ntaub ntawv siv ntau | Intra-building, data center luv ncav cuag | Tsev kawm ntawv, kev lag luam, kev nkag mus hauv metro, 1G-25G txuas | Ntev -haul, metro backbone, DWDM, submarine |
Nco tseg: Qhov kev ncua deb ntawm qhov tseeb yog nyob ntawm tus qauv transceiver tshwj xeeb thiab teeb tsa txuas poob. Cov lus no yog ib qho kev npaj siv, tsis yog hloov pauv rau kev suav nyiaj txiag txuas.
1310nm puas tuaj yeem siv rau ob leeg tib leeg -Hom thiab Multimode Fiber?
Los ntawm lub neej ntawd, thaum tib neeg hais tias "1310nm fiber," lawv tab tom tham txog ib qho - hom kev siv. Qhov ntawd yog qhov kev xav zoo tshaj plaws thaum tshuaj xyuas optics, hloov chaw nres nkoj, lossisfiber optic thaj cords.
Txawm li cas los xij, muaj qhov tshwj xeeb tseem ceeb. CovCisco 1000BASE-LX/LH SFP datasheetlees paub tias qhov 1310nm module no ua haujlwm ntawm ib qho - hom fiber ntau mus txog 10 km, thiab tseem nyob rau hauv multimode fiber ntau txog 550 m - muab rau koj siv hom - cua txias thaj qaum thaum txuas rau legacy multimode cable. Yog tias tsis muaj txoj hlua khi ntawd, qhov kev tso tawm ntawm cov khoom siv fiber ntau tuaj yeem ua rau kev sib txawv ntawm kev ncua, kev ua haujlwm txuas txuas ntxiv.
Qhov no yog ib qho piv txwv zoo ntawm vim li cas wavelength ib leeg tsis txhais tias fiber ntau compatibility. Tus qauv kho qhov muag, qib fiber ntau, thiab lub cev sib txuas txhua tus ua lub luag haujlwm. Yog tias koj tab tom npaj ib qhov txuas rauOM3 los yog OM4 multimode fiber ntau, xyuas kom tseeb tias cov transceiver koj xaiv tau tshwj xeeb rau cov hom fiber ntau thiab qhov deb.
Kev siv ntau ntawm 1310nm hauv Fiber Networks
Koj yuav ntsib 1310nm thoob plaws ntau yam ntawm -kev xa tawm thoob ntiaj teb:
Lub tsev kawm ntawv thiab kev lag luam nraub qaum
Tsev-rau- tsim kev sib txuas hauv ib puag ncig hauv tsev kawm ntawv - feem ntau 1–10 km - yog cov ntaub ntawv siv classic rau 1310nm ib leeg -mode optics. Cov qauv zoo li 1000BASE-LX/LH (1G) thiab 10GBASE{13}}LR (10G) siv 1310nm tshajtib - hom LC thaj cablesrau cov kev ncua deb.
Metro nkag mus thiab sib sau ua ke
Cov chaw muab kev pabcuam feem ntau siv 1310nm transceivers hauv cov nplhaib nkag thiab cov txheej txheem sib sau ua ke, qhov chaw txuas txuas tau nyob hauv thaj tsam 10-20 km uas 1310nm ua haujlwm tau zoo.
Bidirectional (BiDi) txuas
Hauv BiDi transceiver tsim, 1310nm feem ntau yog ua ke nrog 1490nm lossis 1550nm los nqa cov dej ntws thiab cov dej ntws mus rau ntawm ib qho fiber ntau. Qhov no tshwm sim hauv FTTH thiab hauv cov xwm txheej uas suav fiber ntau txwv. Koj yuav pom qhov no hauv tsev neeg cov khoom xws li 1000BASE-BX.
Siab dua - cov modules ceev
1310nm tseem tshwm sim hauv 25G (SFP28-LR) thiab txawm tias 100G / 400G optical module tsev neeg tsim los rau ib leeg -mode luv- mus txog nruab nrab. Nws tseem yog tus qauv wavelength xaiv hla ntau tiam ntawm Ethernet qauv.
ITU-T G.652 qhia meej txog kev sib txuas tus qauv ib zaug - hom fiber ntau rau ntau hom kev kho qhov muag, suav nrog hauv zos, kev nkag mus, thiab kev siv xov tooj hauv xov tooj - tag nrho cov uas feem ntau siv 1310nm kis tau tus mob.
Yuav Ua Li Cas Xaiv Txoj Cai 1310nm Teeb
Yog tias koj tab tom ntsuas qhov kev xa tawm 1310nm, ntawm no yog txoj kev txiav txim ncaj nraim:
Kauj Ruam 1: Txheeb xyuas koj hom fiber ntau ntsia
Xyuas seb koj lub cable cog yog ib qho -hom lossis multimode. Yog tias koj muaj tus qauv - hom fiber ntau (G.652, feem ntau nrog lub tsho daj), 1310nm yog lub ntuj thiab zoo- txhawb kev xaiv. Yog koj muajmultimode fiber ntau, tsis txhob xav tias txhua 1310nm module yuav ua haujlwm - txheeb xyuas tus qauv tseeb thiab xyuas seb puas yuav tsum muaj hom - cua txias thaj qaum.
Kauj ruam 2: Xam koj cov peev nyiaj txuas
Ntsuas lossis kwv yees qhov poob tag nrho hauv koj txoj kev fiber ntau: fiber ntau attenuation (n deb × dB / km), connector poob (feem ntau 0.3-0.5 dB ib khub mated rauLC connectorslos yogSC connectors), thiab tej splice poob. Sib piv tag nrho tawm tsam tus transceiver cov nyiaj tau los ntawm kev sib txuas (transmitter fais fab rho tawm txais rhiab heev). Yog tias koj qhov poob yog nyob rau hauv pob nyiaj siv ntawm 1310nm, koj muaj qhov txuas siv tau.
Kauj Ruam 3: Sib piv cov transceiver rau koj cov khoom kho vajtse thiab tus qauv
Ib qho qauv sau tias "1310nm" tseem xav tau kom phim koj qhov hloov pauv lossis hom chaw nres nkoj router, tus qauv Ethernet xav tau (piv txwv li, 1000BASE-LX, 10GBASE-LR, 25GBASE-LR), kojconnector hom ntawv, thiab koj lub hom phiaj nyob deb. Cisco tus kheej SFP catalog teev ntau 1310nm modules nrog cov kev ntsuas sib txawv thiab kev txhawb nqa xov xwm - lawv tsis hloov pauv.
Kauj ruam 4: Xav txog koj txoj kev txhim kho
Yog tias koj lub network tuaj yeem loj hlob los ntawm 1G tsev kawm ntawv txuas mus rau 10G lossis 25G kev sib sau tom qab, npaj cov nroj tsuag fiber ntau raws li. Standard G.652D ib leeg- hom fiber ntau txhawb nqa ob qho tib si 1310nm thiab 1550nm thoob plaws qhov dav wavelength ntau yam, uas ua rau koj yooj yim rau yav tom ntej muaj peev xwm hloov khoom dua tshiab yam tsis hloov cable. Rau ib puag ncig twb xav txog100G cabling architectures, lees paub ib zaug xwb -mode compatibility tam sim no tsis txhob raug nqi rov qab tom qab.
Feem ntau yuam kev thaum ua haujlwm nrog 1310nm Optics
Kho 1310nm raws li hom fiber ntau.
Nws yog lub qhov rais wavelength, tsis yog cable specification. Hom fiber ntau (ib zaug-mode vs. multimode, G.652 vs. G.655), qhov txuas txuas (PC, UPC, lossis APC), thiab tus qauv transceiver txhua yam teeb meem ntawm nws tus kheej.
Piv txwv tias tag nrho 1310nm transceivers ua tau zoo ib yam.
A 1000BASE-LX SFP ntsuas rau 10 km thiab 10GBASE-LR SFP+ ntsuas rau 10 km yog ob qho tib si 1310nm - tab sis lawv pab cov ntaub ntawv sib txawv, muaj peev xwm sib txawv, thiab tsis hloov pauv hauv tib qhov chaw nres nkoj.
Tsis quav ntsej connector thiab thaj qaum yuav tsum.
A 1310nm ib zaug - hom txuas yuav tsum tau ib hom - hompatch kabthiabadaptersmatched rau transceiver's connector hom - feem ntau LC duplex rau feem ntau SFP thiab SFP + modules. Cov hlua khi tsis sib haum (xws li siv multimode jumpers ntawm ib qho -chaw nres nkoj hom) yuav ua rau poob siab lossis txuas tsis ua haujlwm.
Overlooking qhov txawv ntawm "technically ua tau" thiab "pom zoo."
Ib qho 1310nm module tuaj yeem ua haujlwm ntawm multimode fiber ntau dhau qhov kev ncua deb, tab sis qhov ntawd tsis txhais tau tias nws yog qhov kev xaiv tsim nyog. Ib txwm ua raws li cov chaw tsim khoom transceiver txhawb kev tshaj tawm thiab cov lus qhia nyob deb.
Cov lus nug nquag
Puas yog 1310nm ib txwm siv nrog - hom fiber ntau?
Hauv feem ntau ntawm cov xwm txheej, yog. Lub 1310nm wavelength yog tus qauv kev khiav hauj lwm qhov rais rau ib zaug - hom fiber ntau ib ITU-T G.652. Txawm li cas los xij, qee qhov kev kho qhov muag - zoo li Cisco 1000BASE-LX/LH - kuj tuaj yeem ua haujlwm ntawm ntau hom fiber ntau ntawm qhov kev ncua deb (txog 550 m) nrog hom- cua txias thaj qaum.
Dab tsi yog qhov txawv ntawm 1300nm thiab 1310nm hauv fiber ntau optics?
Cov ntsiab lus feem ntau siv xoob. Qhov "1300nm qhov rais" yog qhov dav siv rau thaj tsam wavelength nyob ib ncig ntawm 1260-1360 nm. Hauv kev xyaum, feem ntau - hom transceivers nyob rau hauv lub qhov rais no ua haujlwm ntawm nominal wavelength ntawm 1310nm. Lub koom haum Fiber Optic siv "1300nm" raws li lub qhov rais dav dav rau daim ntawv thov multimode, thaum "1310nm" yog qhov tshwj xeeb nominal wavelength rau ib qho - qauv qauv.
Puas yog 1310nm zoo dua 1550nm rau txhua qhov txuas?
Tsis yog. Rau luv luv -rau- qhov nruab nrab txuas (hauv qab kwv yees li 10–20 km), 1310nm feem ntau yog tus nqi ntau dua- ua haujlwm tau zoo thiab muaj kev cuam tshuam tsawg heev. Rau kev sib txuas ntev dua qhov twg fiber ntau attenuation dhau los ua qhov txwv, 1550nm yog qhov kev xaiv zoo dua vim nws qhov poob qis (~ 0.20 dB / km vs. ~ 0.35 dB / km). Rau qhov deb heev, 1550nm kuj txhawb EDFA optical amplification, uas 1310nm tsis.
Puas yog 1310nm optic khiav ntawm multimode fiber ntau?
Qee cov qauv tshwj xeeb tso cai rau nws. IEEE 802.3z 1000BASE-LX tus qauv tso cai rau kev ua haujlwm ntawm ntau hom fiber ntau ntawm qhov kev ncua deb, feem ntau yuav tsum muaj hom- cua txias thaj qaum kom tsis txhob muaj kev sib txawv ntawm kev ncua sijhawm. Txawm li cas los xij, qhov no yog qhov tshwj xeeb - tsis yog txoj cai dav dav. Nco ntsoov xyuas cov ntaub ntawv transceiver.
Ntev npaum li cas 1310nm module tuaj yeem ncav cuag?
Nws nyob ntawm tus qauv transceiver nkaus xwb. A 1000BASE-LX/LH SFP raug ntsuas txog li 10 km ntawm ib qho - hom fiber ntau. A 10GBASE-LR SFP+ kuj tau ntsuas rau ~ 10 km ntawm 1310nm. Qee qhov 1310nm modules tsim rau kev ncua ntev tuaj yeem mus deb dua. Qhov siab tshaj plaws nyob deb yog teem los ntawm lub module lub hwj chim pob nyiaj siv thiab tag nrho cov txuas poob, tsis yog los ntawm lub wavelength ib leeg.
1310nm thiab 1550nm puas tuaj yeem siv rau tib yam nkaus xwb - hom fiber ntau?
Yog lawm. Standard G.652D ib leeg- hom fiber ntau txhawb kev sib kis ntawm ob lub wavelengths. Qhov tseeb, BiDi (bidirectional) transceivers siv raws nraim txoj hauv kev no - xa 1310nm nyob rau hauv ib qho kev taw qhia thiab 1490nm los yog 1550nm nyob rau hauv lwm yam tshaj ib fiber strand.Simplex fiber ntau configurationfeem ntau cia siab rau qhov kev sib tw wavelength.
Kuv yuav paub li cas tias kuv xav tau LX, LR, ER, lossis BiDi optics?
Cov qauv tsim muaj xws li IEEE lossis tus neeg muag khoom sib txawv - cov qauv txiav txim siab nrog cov kev ntsuas sib txawv. LX (ntev wavelength) feem ntau npog 1G txog li 10 km. LR (ntev ncav cuag) npog 10G txog li 10 km. ER (ntev ncav cuag) npog 10G txog li 40 km, feem ntau ntawm 1550nm. BiDi optics siv cov wavelengths ua ke ntawm ib qho fiber ntau. Ua kom haum rau qhov koj xav tau cov ntaub ntawv tus nqi, nyob deb, thiab suav fiber ntau.
Dab tsi txuas yog feem ntau siv nrog 1310nm ib leeg -hom optics?
Feem ntau niaj hnub 1310nm SFP thiab SFP + transceivers sivLC Duplex connectors. Cov khoom qub tuaj yeem siv tauSC connectors. Rau siab dua - daim ntawv thov ceev (40G/100G),MPO / MTP connectorsmuaj ntau zuj zus. Nco ntsoov xyuas tus transceiver qhov kev qhia tshwj xeeb ua ntej xaj cov hlua khi.
Thaum kawg Takeaway
1310nm yog ib qho ntawm cov kev siv dav tshaj plaws nyob rau hauv fiber ntau optic networking - thiab yog vim li cas. Nws muaj cov chromatic dispersion tsawg ntawm tus qauv ib zaug - hom fiber ntau, ib qho chaw loj ntawm cov qauv transceiver uas muaj pov thawj, thiab tus nqi zoo rau qhov luv luv - rau - cov kev sib txuas nruab nrab uas ua rau feem ntau ntawm cov tsev kawm ntawv, kev lag luam, thiab kev siv metro.
Tab sis qhov kev txiav txim siab yuav khoom tsis yog los ntawm wavelength ib leeg. Nws los ntawm kev sib txuamhom fiber ntau + txuas nrug + transceiver standard + connector format + upgrade txoj kev. Yog tias koj tab tom ntsuas qhov kev xa tawm tiag tiag, pib los ntawm kev lees paub koj qhov kev teeb tsa cable, suav koj cov peev nyiaj poob, thiab tom qab ntawd xaiv cov transceiver tshwj xeeb uas haum rau koj cov khoom siv kho vajtse thiab kev ncua deb.
