Cov ntsiab lus sib txawv tiag tiag, tus lej lej tiag, cov ntaub ntawv ntawm lub Hoobkas tiag - distilled los ntawm 3, 200+ cov phiaj xwm xa tawm thiab kev tsim kev kam rau siab peb tshaj tawm ntawm txhua lub reel uas tawm ntawm peb kab.
- Lub crossover yog ze dua li qhov koj xav.Ntawm 100G SMF / MMF tus nqi hloov pauv tshwm sim nyob ib puag ncig 220 m, tsis yog 500 m. Ntawm 400G nws poob rau ~ 100 m. Ntawm 800G, ib hom - hom yog qhov yuav tsum tau ua kom zoo tshaj li hauv - khib.
- SMF cable yog pheej yig dua MMF.Tus nqi hwm yog nyob rau hauv transceivers (1.5-4 × siab dua), tsis yog iav.
- Hyperscalers twb xaiv lawm.Tib - hom tam sim no sawv cev~ 61% ntawm optical interconnectkev xa khoom, nce los ntawm txoj haujlwm niche tsib xyoos dhau los.
- OM5 tus nqi lus pom zoo yog sib tw.Corning tshaj tawm hais tias OM5 "muab tsis muaj nqi piv rau OM4" sab nraum SWDM- tshwj xeeb xa tawm. Npaj raws li.
- 2026 SMF pricing yog volatile.AI khib fiber ntau xav tau (16–36 × ib ntawm) tau sib sau ua ke nrog FTTH noj, ua ob npaug rau qee qhov kev cog lus hauv cheeb tsam.
- Lub ntsiab physics - yog vim li cas "hom" tseem ceeb
- SMF vs MMF - qhov sib piv 8-factor
- Sub{0}}categories: OS1/OS2, OM1–OM5, G.65x
- Qhov deb, bandwidth, ceev
- Tus nqi sib npaug
- Hybrid deployments thiab yuam kev
- Tus engineer txiav txim siab ntoo
- 2026 kev ua lag luam kev muaj tiag (AI, nqi)
- FAQ
01Core Physics - Vim li cas "Mode" Matters
Ua ntej cov nplooj ntawv spec thiab cov qauv nqi, qhov kev xaiv ntawm ib qho -hom thiab multimode fiber ntau los rau ib tus lej: txoj kab uas hla ntawm lub iav core los ntawm lub teeb mus. Tus lej ntawd - kwv yees li 9 µm rau ib zaug - hom, 50 lossis 62.5 µm rau multimode - txiav txim siab yuav luag txhua yam ntxiv.
Tib - hom fiber ntau: ib txoj kev, ib hom
A ib leeg - hom fiber ntau (SMF)muaj ib qho tseem ceeb ntawm kwv yees li 8-10 µm, nqaim txaus uas tsuas yog ib qho kev kho qhov muag - hom tseem ceeb - tuaj yeem nthuav tawm ntawm kev ua haujlwm wavelength. Nrog ib hom nyob rau hauv lub hauv paus, tsis muaj modal dispersion. Lub mem tes tawm ntawm lub transmitter thiab tuaj txog ntawm lub receiver nrog nws cov duab tseem zoo li qub. Qhov no yog vim li cas SMF tuaj yeem khiav 100 km ntawm cov ntsiab lus regen thiab 10, 000+ km ntawm submarine systems.
Cov tub ntxhais nqaim xav tau lub teeb pom kev zoo meej - feem ntau aDFB los yog EML laserntawm 1310 nm lossis 1550 nm - thiab nruj mechanical alignment ntawm txhua qhov txuas. Qhov kev txiav txim siab ntawd yog qhov ua rau ib leeg - hom transceivers kim, thiab peb yuav suav li cas hauv §5.
Multimode fiber ntau: ntau txoj hauv kev, hom sib npaug
A Multimode fiber ntau (MMF)muaj cov tub ntxhais loj dua (50 µm hauv niaj hnub OM3 / OM4 / OM5, 62.5 µm hauv keeb kwm OM1). Cov tub ntxhais dav dav captures lub teeb los ntawm pheej yigVCSELlos yog LED qhov chaw ntawm 850 nm, thiab txhawb ntau pua hom propagating ib txhij. Kev ntes: txhua hom siv txoj hauv kev sib txawv me ntsis los ntawm cov fiber ntau, tuaj txog ntawm tus txais lub sijhawm sib txawv me ntsis. Lub plawv dhia. Qhov no yogmodal dispersion, thiab nws yog qhov nyuaj lub cev qab nthab nyob deb npaum li cas MMF tuaj yeem khiav ntawm tus nqi muab cov ntaub ntawv.
Modal dispersion, hauv ib tus lej
Multimode fibers raug ntsuas los ntawmmuaj txiaj ntsig modal bandwidth (EMB), qhia hauv MHz·km. Siab dua yog zoo dua:
- OM3: 2,000 MHz · km ntawm 850 nm
- OM4: 4,700 MHz · km ntawm 850 nm
- OM5: 4,700 MHz ·km ntawm 850 nm + 2, 470 MHz ·km ntawm 953 nm (SWDM)
Tib - hom fiber ntau tsis muaj qhov ntsuas bandwidth vim nws tsis muaj qhov sib txawv. Nws bandwidth tsuas yog txwv los ntawm chromatic thiab polarization-mode dispersion - ob qho tib si yog cov peev nyiaj loj heev dua li modal dispersion.
02SMF vs MMF ntawm ib sab - Qhov sib piv 8-Factor
Txhua phau ntawv sib piv hauv internet pib nrog lub rooj. Peb mam li muab rau koj li peb, tab sis nrog tus tsim nyog uascov ntawv tshaj tawm feem ntau conflate fiber ntau tus nqi nrog tus nqi system, ua rau lub cliché tias "SMF yog kim dua." Nws tsis yog, raws li koj yuav pom hauv §5.
| Qhov xwm txheej | Tib - hom (SMF) | Multimode (MMF) |
|---|---|---|
| Core txoj kab uas hla | 8–10 µm | 50 µm (OM2–5) / 62.5 µm (OM1) |
| Cladding txoj kab uas hla | 125 µm | 125 µm |
| Lub teeb qhov chaw | DFB / EML laser | VCSEL / LED |
| Ua haujlwm wavelength | 1310/1550 nm (kuj 1625, 1310/1490/1550 PON) | 850 / 1300 nm |
| Attenuation @ 1310/850 nm | ~ 0.35 dB/km @ 1310 ~ 0.22 dB/km @ 1550 |
~ 3.0 dB/km @ 850 ~ 1.0 dB/km @ 1300 |
| Max ncav cuag (tus qauv) | 40-100 km (LR/ER optics) | 30-550 m (nyob ntawm OM qib thiab tus nqi) |
| Jacket xim (TIA-598-C) | Daj | Txiv kab ntxwv (OM1/2), Aqua (OM3/4), Txiv qaub (OM5) |
| Ib tus nqi -meter cable | $0.06–0.10 (OS2) | $0.25–0.32 (OM4) |
| Ib tus nqi -port transceiver (100G) | $200–550 | $100–219 |
| Zoo tshaj plaws | Ntev -haul, DCI, FTTH, AI qaum, yav tom ntej- pov thawj | Intra- khib, sab saum toj- ntawm - khib, luv DC txuas |
Rau TIA-598-C lub tsho xim thiab yuav ua li cas lawv siv nyob rau hauv hom cable, saib peb tus khub phau ntawv qhia ntawmfiber optic xim codes. Yog xav paub txog yuav ua li cas cov fibers no fused rau hauv lub network, saibYuav ua li cas fusion splice fiber optic cable.
03Cov Sub-Qhab koj yuav tsum paub tiag tiag
"Single-mode" thiab "multimode" yog tsev neeg, tsis yog cov khoom lag luam. Cov kev txiav txim siab ntawm kev yuav khoom tiag tiag tshwm sim ntawm qib subcategory.
OS1 vs OS2 (single-mode)
TIA paub qhov txawv ntawm ob qib ntawm ib qho - hom fiber ntau los ntawm kev tsim kho thiab txo qis:
- OS 1- nruj- buffered, feem ntau hauv tsev, siab kawg attenuation ~ 1.0 dB/km ntawm 1310/1550 nm. Muaj keeb kwm yav dhau los hauv 2026.
- OS 2- xoob- raj, tsim rau sab nraum zoov thiab ntev -haul, siab tshaj attenuation ~0.4 dB/km ntawm 1310 nm. Lub neej ntawd rau ib qho tshiab sab nraud - cog lossis tsev kawm ntawv tsim.
ITU-T fiber ntau (G.65x)
Qhov twg TIA nres, ITU-T txuas ntxiv nrog ntau yam subcategories. Cov uas koj yuav ntsib hauv cov specs tiag tiag:
| ITU-T Spec | Nws yog dab tsi | Thaum siv |
|---|---|---|
| G.652.D | Txheem SMF, dej siab siab (E-band usable) | Cov pob txha qub / FTTH lub hauv paus |
| G.657.A1 | Khoov-insensitive, 10 mm min vojvoog | Tsev riser / thaj panels |
| G.657.A2 | Khoov-insensitive, 7.5 mm radius, G.652-tshaj | Tight enclosures, FTTR poob |
| G.657.B3 | Ultra- khoov-sensitive, 5 mm vojvoog | FTTR lub tsev cable, nruj ces kaum |
| G.654.E | Txiav-tawm txav, ultra- poob qis ntawm 1550 nm | Ntev -haul DCI, submarine, 400G+ ZR |
Lub official ITU-T cov ntaub ntawv -G.652thiabG.657- yog cov ntaub ntawv pov thawj. FOA kuj tswj tau qhov zoo heevtib- hom fiber ntau saib.
OM1 → OM5 (ntau hom)
Cov qib multimode, txhais raws li TIA-492AAAx thiab IEC 60793-2-10:
| Qib | Core | PEB @ 850nm | 10G mus txog | 100G ncav cuag | xwm txheej |
|---|---|---|---|---|---|
| OM 1 | 62.5 µm | 200 MHz · km | 33 m | n/a | Legacy nkaus xwb |
| OM 2 | 50 µm | 500 MHz · km | 82 m | n/a | Legacy nkaus xwb |
| OM 3 | 50 µm | 2,000 MHz · km | 300 m | 100 m | Kev xaiv nyiaj txiag |
| OM 4 | 50 µm | 4,700 MHz · km | 550 m | 150 m | Tam sim no lub ntsiab |
| OM 5 | 50 µm | 4,700 (+2,470 @ 953) | 550 m | 150 m (400 w/SWDM) | Niche (SWDM nkaus xwb) |
04Qhov deb, Bandwidth, thiab Ceev - Qhov twg Txhua Yeej
Hom fiber ntau ib leeg tsis txiav txim siab txog. Tus qauv transceiver ua. Nov yog qhov uas cov kab tau hla ntawm cov ntaub ntawv niaj hnub no:
| Cov ntaub ntawv tus nqi | OM3 Reach | OM4 Reach | OM5 Reach | OS2 (SMF) Reach |
|---|---|---|---|---|
| 10G (10GBASE-SR / LR) | 300 m | 550 m | 550 m | 10km ua |
| 40G (40GBASE-SR4 / LR4) | 100 m | 150 m | 150 m | 10km ua |
| 100G (SR4 / DR / LR4) | 70 m | 100 m | 150 m (BiDi) | 500 m-10 km |
| 400G (SR8 / SR4.2 / DR4 / LR4) | 30 m | 100 m | 150 m (SR4.2) | 500 m-10 km |
| 800G (SR8 / DR8 / FR4) | 30 m | 50 m | 100 m | 500 m-2 km |
Tus qauv yog qhov tseeb: txhua qhov sib npaug ntawm cov ntaub ntawv tus nqi txiav multimode ncav cuag kwv yees li ib nrab, thaum tib -hom ncav cuag tuav ruaj khov. Ntawm 400G lub hnab ntawv multimode siv tau qis rau ib kab ntawm racks; ntawm 800G nws yog qhov tseem ceeb hauv - khib.
Cov lus nug crossover
Ntawm qhov nrug deb npaum li cas yog ib hom -mos pheej yig dua li multimode ntawm ib lub hauv paus - txuas? Hauv peb 2025 kev txheeb xyuas sab hauv thoob plaws 3, 200+ kev lag luam thiab DC cov haujlwm, qhov kev sib tw zaum ntawm:
- 100G:~ 220 m (MMF pheej yig dua hauv qab, SMF pheej yig dua saum toj no)
- 400G:~ 58 m (ib IEEE 802.3cm specs, suav nrog tus nqi transceiver tam sim no)
- 800G:~ 30m rau kev khiav mus tas li; dhau ntawm -rack, SMF yeej txiav txim siab
Hauv peb cov ntaub ntawv xa tawm, keeb kwm kev lag luam txoj cai ntawm tus ntiv tes xoo - "multimode nyob rau hauv 500 m, ib zaug- hom saum toj no" - tau dhau los ua tus nqi -zoo rau nkaus xwbtxog 18% ntawm kev sib txuasntawm 100G thiab zooxoom txuasntawm 400G lossis siab dua. Cov lus qhia "500 m" txuas ntxiv vim nws tau sau rau 10G.
05Tus nqi tiag tiag sib npaug (Spoiler: Nws Tsis yog Fiber)
Cov kev txawj ntse pom tau tias multimode pheej yig dua. Cov kev txawj ntse ib txwm tsis tau tshawb xyuas qhov 2026 kev yuav khoom.
Tus nqi cable - SMF yeej pheej yig dua ib 'meter'
Tshem tawm ntawm cov khoom lag luam hwm, cov nqi fiber ntau nyob rau thaum ntxov 2026 zoo li:
- OS 2 SMF:$0.06–0.10 ib meter
- OM4 MMF:$0.25-0.32 ib 'meter'
- OM 5 MMF:30-40% premium tshaj OM4
SMF yog kwv yees li 60-70% pheej yig dua ib meter ntawm liab qab fiber ntau. Cov txheej txheem tsim khoom rau qhov me me, zoo ib yam nkaus xwb - hom core yog tam sim no paub tab txaus tias nws yog tiag tiagyooj yim duadua li ua OM4 qhov nruj tswj tau qib -index profile.FOA nplooj ntawv sivnpog cov laj thawj kev nthuav dav.
Tus nqi transceiver - qhov twg qhov sib txawv tiag tiag nyob
Cov optics qhia ib zaj dab neeg txawv. Los ntawm kev soj ntsuam tus nqi lag luam raws li Q1 2026:
| Ceev / Form Factor | MMF Transceiver | SMF Transceiver | Hwm |
|---|---|---|---|
| 10G SFP + (SR vs LR) | ~$40 | ~$80 | 2.0× |
| 25G SFP28 | ~$80 | ~$180 | 2.3× |
| 100G QSFP28 (SR4 vs DR / LR4) | ~$120 | ~$220–550 | 1.8–4.6× |
| 400G QSFP-DD (SR8 vs DR4 / LR4) | ~$219 | ~$549–1,200 | 2.5–5.5× |
| 800G OSFP (SR8 vs DR8 / FR4) | ~$700 | ~$1,400–2,200 | 2.0–3.1× |
Meta case study
Meta tau luam tawm ib qho kev tshuaj xyuas TCO sab hauv xyoo 2023 uas qhia tau hais tias, kev tsim hauv cable, transceiver, kev teeb tsa, thiab rov ua dua -kev pheej hmoo cable,ib leeg- hom yog pheej yig dua li multimode rau lawv 100G data center deployments. Qhov ntawd tsis yog typo. Thaum tus hyperscaler khiav ntau pua txhiab qhov txuas thiab zam ib qho rov qab -kab mus los ntawm kev mus SMF pem hauv ntej, TCO inverts.
Glory Optics tshawb xyuas ntawm3,200 kev lag luam thiab cov haujlwm thauj khoom (2024-2025)pom tias multimode- pheej yig dua qhov kev xav tau tuav rau nkaus xwb:
• Cov ntaub ntawv me me (<500 servers):84% ntawm cov nqi sib txuas -zoo li MMF
• Nruab nrab DCs (500-5,000):41% MMF / 38% SMF / 21% hybrid
• Large DCs (>5,000):12% MMF / 79% SMF / 9% hybrid
Lub crossover los ntawm qhov ntsuas, tsis yog nyob deb, yog qhov tseeb framing.
06Hybrid Deployments thiab Common yuam kev
Vim li cas hom- sib tov tsis ua haujlwm
Ib qho - hom transceiver firing mus rau hauv multimode fiber ntau, los yog vice versa, tsis ua hauj lwm. Lub geometry mismatch yog loj heev:
- SMF → MMF:Lub 9 µm laser beam launches rau hauv 50 µm core, txaus siab rau ntau hom kev txais tsis tau tsim los daws. Modal suab nrov thiab me ntsis yuam kev ua raws.
- MMF → SMF:Qhov dav VCSEL tso zis tsis ua ob peb rau hauv qhov nqaim SMF core. Kev poob siab tshaj 10 dB. Link tsis tuaj.
Ib qho kev zam: hom- hloov kho cov hlua khi
Rau 1000BASE-LX (Gigabit Ethernet) khiav dhauOM1 / OM2 keeb kwmnrog ib qho -mode laser qhov chaw, hom- cua txias thaj qaum qhia txog kev tswj hwm offset uas suppresses modal suab nrov. Qhov no tsuas yog qhov tsim nyog "sib xyaw" scenario, thiab txawm tias nws tab tom ploj mus los ntawm cov qauv tshiab raws li OM3 / OM4 hloov OM1 / OM2.
Hybrid topology: txoj kev yog
Hybrid deployments - ib zaug -mode rau qaum qaum, multimode rau luv luv faib - yog ib yam thiab yog. Cov cai:
- Siv SMF rau txhua qhov kev sib tshuam - tsev, inter- pem teb, lossis inter- kab txuas dhau MMF mus txog.
- Siv MMF rau sab saum toj - ntawm - khib thiab hauv - kab txuas qhov twg SMF transceiver premium tsis raug cai.
- Tsis txhob splice SMF thiab MMF ncaj qha.Siv cov vaj huam sib luag sib txawv, cov kab hluav taws xob kho qhov muag, lossis cov khoom hloov pauv hloov mus rau choj.
8 feem ntau yuam kev SM/MM
- Txuas lub OM1 patchcord rau hauv OM3 txuas.Cov teeb liab poob hnyav; me ntsis me ntsis- yuam kev tus nqi nce uas dhau qhov pib commissioning tab sis ua tsis tiav hauv kev tsim khoom.
- Specification OS1 rau sab nraum zoov.Attenuation hits qab nthab ntawm kev khiav ntev; hloov nrog OS2.
- Yuav OM5 rau qhov tsis yog -SWDM xa tawm.Raws li Corning tus kheej luam tawm tsom xam, tsis muaj txiaj ntsig tshaj OM4 nrog tus qauv 850 nm optics.
- Specifications SR4 transceivers ntawm 200 m ntawm OM4.100G-SR4 yog ntsuas 100 m. Qhov txuas yuav txheeb - ntawm kev ua haujlwm, tom qab ntawd poob ntawm qhov kub thiab txias.
- Sib tov APC (ntsuab) thiab UPC (xiav) connectors.Txog li 1 dB ntxiv poob ntxiv rau kev puas tsuaj.
- Tsis yog bidirectional -test splices.Saib pebfusion splicing phau ntawv qhiarau cov txheej txheem OTDR.
- Tsis quav ntsej polarity hauv MPO/MTP.Txoj kev A / B / C yuav tsum tau teev ua ntej kev txiav txim cable.
- qias neeg connectors.Kev lag luam cov ntaub ntawv ntaus nqi ~ 40% ntawm qhov txuas tsis ua haujlwm rau kev sib kis, tsis yog fiber ntau lossis transceivers.
07Tus Kws Txiav Txim Siab Tsob Ntoo - Xaiv txoj cai Fiber hauv 60 vib nas this
Tsis yog hais cov lus sib piv, ntawm no yog qhov kev txiav txim siab tiag tiag ntws peb pawg neeg ua haujlwm engineering siv thaum lub sijhawm ua haujlwm:
Scenario · Cov ntaub ntawv chaw qaum / nplooj, 100G–800G
Hyperscaler txheem. Yav tom ntej - pov thawj los ntawm peb tiam ntawm transceivers. Siv DR4 lossis 2 × FR4 rau hauv -DC; LR4 rau DCI.
Scenario · Sab saum toj - ntawm - khib rau server,<30 m, 25G/100G
Classic MMF yeej rooj plaub. SR4 / SR8 transceivers ntawm 30-50% tus nqi qis. Siv OM4 dhau OM3; hla OM5 tshwj tsis yog SWDM nyob rau hauv daim ntawv qhia.
Scenario · AI / GPU pawg ntaub, 400G–800G
Blackwell{0}}chav kawm racks xav tau 16–36 × fiber ntau dua li huab huab. MMF ncav cuag evaporates. LPO/CPO modules raug tsim tawm tsam SMF.
Scenario · FTTH / FTTR kawg - mais
Txheem fiber ntau tawg ntawm khoov radii siv hauv tsev cabling. G.657.B3 (5 mm radius) yog 2026 default rau hauv -hom FTTR. Saib pebFTTH kev xa tawm cov lus qhia.
Scenario · Enterprise campus, building-to-building
Qhov deb tshaj 300 m thov SMF; sub-100 m intra- lub tsev nyob twj ywm nqi-zoo nrog OM4. Siv OS2 trunks rau hauv MDF, OM4 fanout rau IDF.
Scenario · Legacy retrofit ntawm OM1/OM2 cog
Yog tias koj yuav tsum khaws OM1 / OM2, cap ntawm 1G nrog hom - cov hlua txias. Yog tias rub cov fiber ntau tshiab, dhia mus rau OS2 - cable tus nqi sib txawv yog tsawg thiab koj hla lub neej yav tom ntej ntawm re-cabling.
082026 Kev Ua Lag Luam Kev Muaj Peev Xwm - AI, Tus Nqi, thiab Qhov Chaw Ua Lag Luam Tau Los
Hyperscaler hloov
Raws li LightCounting nrhiav thiab Mordor Intelligence's 2026 Optical Interconnect tsab ntawv ceeb toom,ib leeg- hom tam sim no suav txog kwv yees li 61.5% ntawm cov khoom siv kho qhov muag sib txuas, nce los ntawm lub sijhawm ntev - txoj haujlwm tsawg. Meta, Google, AWS, thiab Microsoft muaj tag nrho cov qauv ntawm SMF rau qaum- txheej txheej txheej. Qhov "deploy ib zaug, upgrade electronics" thesis tau yeej ntawm scale.
2026 ib leeg - hom nqi nce
Pab pawg neeg yuav khoom yuav tsum paub txog kev ua lag luam tiag tiag. 2026 nthwv dej yog cov qauv, tsis yog cyclical:
- AI data center buildouts tau nqus SMF hauv ntim uas tsis muaj nyob rau ob xyoos dhau los.
- BEAD (US nyob deb nroog broadband, $42.5B) yog dov tawm ib txhij, siv FTTH-qib G.657 fiber ntau.
- Upstream preform muaj peev xwm yog 18-24 lub hlis tom qab thov.
- STL kwv yees US ib leeg xav tau 213M ntxiv fiber ntau mais los ntawm 2029 - ntau dua ob npaug ntawm kev xa tawm tam sim no.
Cov txiaj ntsig zoo: cov nqi muag hauv qee thaj tsam tau nce ob npaug rau peb zaug thaum ntxov 2026. Kev yuav khoom tau nce ntxiv -raws li tsis yog qhib- khw.Xauv hauv cov ntawv cog lus thaum ntxov, thiab ua kom yooj yim rau fiber ntau - suav optimization.
Puas yuav OM5 muaj sia nyob ntawm AI era?
Corning lub Kaum Ob Hlis 2024 kev soj ntsuam sab hauv tau xaus lus tias "OM5 tsis muaj nqi piv rau OM4 thaum siv cov qauv sib tw-raws li 850 nm optics." Peb tus kheej cov ntaub ntawv xa tawm pom zoo: OM5 tsuas yog khwv tau nws tus nqi thaum ua ke nrog SWDM lossis BiDi transceivers ua haujlwm thoob plaws 850-953 nm. Rau txhua yam ntxiv, OM4 yog qhov kev xaiv tsim nyog.
800GBASE-SR8 qhov tshwj xeeb khaws cia ib qho tshwj xeeb rau OM5, tab sis ntev dua - lub sij hawm lub zog - tsav los ntawm AI khib ceev thiab txuas suav - yog thawb cov neeg siv no mus rau ib qho - hom twg.
Thoob plaws cov haujlwm peb xa tawm hauv 2025, OM5 sawv cev4.2% ntawm multimode ntim. Tib lub xyoo, OS2 G.657.A2 sawv cev54% ntawm tag nrho cov fiber ntau los ntawm qhov ntev, nce los ntawm 38% hauv 2023.
Yog tias peb yuav tsum xaiv ib qho - kab twv ua ntej:los ntawm 2028, multimode fiber ntau yuav yog cov qauv tsim -cov khoom siv cable, tsis yog cov ntaub ntawv -cov khoom nruab nrab.
Cov lus nug nquag
Q: Dab tsi yog qhov txawv ntawm ib qho -hom thiab multimode fiber ntau?
A: Ib leeg- hom fiber ntau muaj ~ 9 µm core uas tsuas yog ib hom kho qhov muag siv lub laser, zoo tagnrho rau kev ncua deb thiab bandwidth - hnyav txuas. Multimode fiber ntau muaj 50 lossis 62.5 µm core uas nqa ntau hom siv VCSELs lossis LEDs, zoo tagnrho rau luv luv, tus nqi - txuas mus txog ~ 400 meters. Qhov nqaim SMF core tshem tawm modal dispersion nkaus.
Q: Kuv puas tuaj yeem txuas ib qho - hom fiber ntau rau ntau hom fiber ntau?
A: Tsis yog. Cov tub ntxhais txoj kab uas hla txawv ntawm 5–7 × (9 µm vs 50/62.5 µm). Lub splice ncaj qha ua rau 3+ dB poob thiab tsis yog tus qauv. Qhov kev zam tsuas yog raug cai yog hom- kho qhov ntsuas patch qaum rau 1000BASE tshwj xeeb-LX dhau qhov qub OM1/OM2 - thiab qhov kev zam no ploj mus los ntawm cov qauv tshiab txhua xyoo.
Q: Puas yog ib qho - hom fiber ntau kim dua li multimode?
A: Lub cable nws tus kheej yog qhov pheej yig dua: OS2 SMF khiav $ 0.06–0.10 ib meter vs $ 0.25–0.32 rau OM4. Tus nqi sib txawv nyob rau hauv lub transceivers - ib leeg- hom optics yog 1.5–4 × kim dua multimode ntawm tib cov ntaub ntawv tus nqi. Thaum koj ntsuas tshaj 200 m lossis tshaj 100G, tag nrho cov nqi hloov pauv hauv kev pom zoo ntawm SMF.
Q: Thaum twg kuv yuav tsum siv ib qho - hom hla multimode?
A: Siv ib qho - hom rau ib qho txuas tshaj 220 meters ntawm 100G, tshaj 100 meters ntawm 400G, lossis ib qho kev xa tawm uas koj xav tias yuav hloov dua siab tshiab tshaj 400G hauv 5-7 xyoo tom ntej. Siv multimode luv luv, nqi -sensitive intra- khib thiab luv- kab txuas nyob rau hauv cov kev ncua deb. Rau hyperscale thiab AI fabrics, ib hom - tam sim no yog lub neej ntawd ntawm txhua qhov deb.
Q: Qhov txawv ntawm OS1 thiab OS2 ib leeg - hom fiber ntau yog dab tsi?
A: OS1 yog nruj- buffered, tsim rau siv sab hauv tsev, nrog siab tshaj attenuation nyob ib ncig ntawm 1.0 dB/km. OS2 yog xoob-tube, tsim rau sab nraum zoov / ntev-haul, nrog qis attenuation nyob ib ncig ntawm 0.4 dB/km ntawm 1310 nm. OS2 yog lub neej ntawd rau kev teeb tsa niaj hnub thiab tau hloov pauv OS1 hauv cov qauv tshiab.
Q: Qhov txawv ntawm OM3, OM4, thiab OM5 yog dab tsi?
A: OM3 muaj 2,000 MHz·km zoo modal bandwidth ntawm 850 nm thiab ncav cuag 300 m ntawm 10G. OM4 muaj 4,700 MHz·km thiab ncav cuag 550 m ntawm 10G - lub ntsiab tam sim no. OM5 phim OM4 ntawm 850 nm tab sis ntxiv 2,470 MHz ·km ntawm 953 nm los txhawb SWDM. Sab nraum SWDM-Kev xa tawm tshwj xeeb, OM5 tsis muaj qhov ntsuas tau zoo dua OM4.
Q: Puas yog AI cov chaw zov me nyuam puas siv tib - hom lossis ntau hom fiber ntau?
A: Feem ntau ib leeg - hom. Hyperscalers suav nrog Meta, Google, thiab AWS tau tsim qauv ntawm ib qho - hom rau AI pob txha pob txha. A 72-GPU Blackwell node yuav tsum muaj kwv yees li 16 × fiber ntau dua li cov huab khib nyiab ib txwm muaj, thiab qhov txuas ntev ntawm GPU pawg ntau tshaj li multimode ncav cuag 800G. Multimode tuav lub luag haujlwm niche hauv ib tus neeg racks.
Q: Vim li cas ib leeg - hom fiber ntau kim dua hauv 2026 dua li ua ntej?
A: AI cov ntaub ntawv qhov chaw thov tau sib sau ua ke nrog kev ua haujlwm rov ua haujlwm FTTH noj thaum lub peev xwm nce qib preform tau qeeb. Cov nqi cog lus hauv ntau thaj tsam tau nce ob npaug rau peb npaug tshaj 2025-2026. Pab pawg neeg yuav khoom tau nce ntxiv nrog kev faib tawm- raws li cov khoom lag luam es tsis yog qhib- kev lag luam muaj. Cia siab tias yuav nruj kom nyob twj ywm 18-24 lub hlis kom txog thaum lub peev xwm nce siab.
Cov ntaub ntawv & Kev Nyeem Ntxiv
- Lub koom haum Fiber Optic,Tib -Mode Fiber Standards Reference. thefoa.org/tech/smf.htm
- Lub koom haum Fiber Optic,CFOT daim ntawv pov thawj. thefoa.org/cfot.htm
- ITU-T Kev Pom Zoo G.652,Cov yam ntxwv ntawm ib qho - hom optical fiber ntau thiab cable. itu.int/rec/T-REC-G.652
- ITU-T Kev Pom Zoo G.657,Cov yam ntxwv ntawm kev khoov- tsis muaj qhov tsis txaus ntseeg ib leeg- hom kho qhov muag fiber ntau thiab cable. itu.int/rec/T-REC-G.657
- IEEE 802.3 thiabEthernet Working Group Standards(xws li 802.3cm rau 400G multimode).ieee802.org/3
