Cov thev naus laus zis ntawm fiber ntau optic transmitters dhau los ntawm kev sib txuas lus ib txwm muaj. Nyob rau hauv lub realm ntawm kev txawj ntse txawj ntse, siab - ceev optical interconnects yog tus yuam sij rau kev tawg los ntawm kev suav cov bottlenecks; nyob rau hauv pom lub teeb kev sib txuas lus (VLC), nws yuav muab cov kev pab cuam tshiab spectral rau 6G. Los ntawm kev koom ua ke nrog cov thev naus laus zis xws li microwave photonics, nws kuj tuaj yeem siv rau ntau qhov chaw xws li kev paub, duab, thiab kev tiv thaiv.
01 Technological Evolution
Covfiber ntau optic transmitter, ib qho tseem ceeb ntawm kev sib txuas lus kho qhov muag, tab tom hloov pauv los ntawm ib qho - ua haujlwm module rau hauv ib qho kev txawj ntse, siab - ua haujlwm tau zoo. Thaum ntxov fiber optic transmitters feem ntau ua tau yooj yim electro-optic hloov dua siab tshiab, tab sis tam sim no lawv tau dhau los ua lub ntsiab tseem ceeb txiav txim siab qhov ua tau zoo ntawm tag nrho cov kev sib txuas lus.
Raws li kev tshawb fawb tshiab los ntawm lub koom haum Fraunhofer, tsoos fiber optic systems tsis tuaj yeem ua tau raws li qhov xav tau ntawm kev siv yav tom ntej. Qhov no tau yuam cov kws tshawb fawb los tsim cov thev naus laus zis fiber ntau optic transmitter, xws li siv wavelength - xaiv cov keyboards thiab spatial division multiplexing los txhim kho lub peev xwm thiab hloov tau yooj yim.
Ib qho tseem ceeb kev taw qhia nyob rau hauv technological evolution yog kev txhim kho spectral efficiency. Cov kws tshawb fawb tau tsim hom tshiab ntawm gratings kom nce spectral daws teeb meem los ntawm ib txwm 100GHz mus rau 25GHz. Qhov no ua rau cov zaus bands rau cov ntaub ntawv kis tau tus mob nqaim thiab cov ntaub ntawv pob ntawv me me, yog li tso cai ntau cov ntaub ntawv cov ntaub ntawv xa mus ib txhij nyob rau hauv tib lub optical fiber.
02 Kev Ua Haujlwm Zoo
Yog vim li cas fiber optic transmitters tau dhau los ua qhov tseem ceeb ntawm kev sib txuas lus niaj hnub no nyob rau hauv lawv cov kev ua tau zoo ntau yam. Siab - muaj peev xwm kis tau tus mob ceev yog ib qho ntawm lawv cov yam ntxwv tseem ceeb tshaj plaws, txhawb nqa cov ntaub ntawv hloov pauv ntawm Gbps thiab ntau dua.
Cov yam ntxwv no ua rau lawv siv dav hauv cov xwm txheej uas xav tau kev xa cov ntaub ntawv loj, xws li cov ntaub ntawv chaw sib cuam tshuam thiab kev nkag mus rau broadband. Nyob rau hauv sib piv, cov tsoos tooj liab cables yog ho txwv nyob rau hauv ob qho tib si kis tus nqi thiab nyob deb li cas nyob rau hauv piv rau tej yam kev mob.
Fiber optic transmitters siv cov teeb liab kho qhov muag los xa cov ntaub ntawv, ua rau txo qis kev sib kis thiab txo qis piv rau cov khoom siv tooj liab. Qhov no txhais tau tias cov teeb liab tuaj yeem tswj tau qhov zoo thiab ruaj khov nyob rau qhov ntev, txo qhov cuam tshuam ntawm cov teeb liab attenuation ntawm kev sib txuas lus zoo.
Cov cuab yeej no tseem ceeb tshwj xeeb tshaj yog rau cov xwm txheej uas xav tau kev pab cuam ntev -, xws li thaj chaw hauv nroog (MANs) thiab thaj chaw dav dav (WANs).Fiber optic transmitterstuaj yeem ua tiav cov ntaub ntawv xa mus dhau kaum lossis ntau pua mais.
Fiber optic transmitters tsis tshua muaj kev cuam tshuam rau sab nraud electromagnetic cuam tshuam thaum sib kis. Piv nrog rau kev xa xov cable, lawv tuaj yeem tswj tau cov teeb liab kev ncaj ncees thiab kev ruaj ntseg zoo dua, tsis tshua muaj kev cuam tshuam rau ib puag ncig, thiab xyuas kom ruaj ntseg thiab txhim khu kev qha cov ntaub ntawv hloov.
03 Application Scenarios
Daim ntawv thov scenarios rau fiber optic transmitters tau nthuav dav los ntawm kev sib txuas lus ib txwm siv mus rau ntau qhov kev lag luam tawm tshiab. Lawv cov yam ntxwv ua tau zoo txiav txim siab lawv qhov tsim nyog rau ntau yam xwm txheej.
Cov lus hauv qab no sib piv cov kev xav tau ntawm kev ua haujlwm rau fiber ntau optic transmitters hauv ntau daim ntawv thov scenarios:
| Daim ntawv thov Scenario | Main Performance Requirements | Hom kis kis tau tus mob | Cov yam ntxwv |
|---|---|---|---|
| Data Center Interconnect | Kev kub ceev, Tsawg latency | Nruab nrab -Short Distance | Siab -Kev xa tawm ceev, kev siv hluav taws xob tsawg |
| MAN/WAN | Ntev Ntev, Siab ruaj khov | Kaum rau pua pua ntawm Kilometers | Strong Anti-Kev cuam tshuam, Kev poob qis |
| Yav Tom Ntej Networks (6G / Quantum Comm.) | Ultra-High Capacity, Flexibility | Ua ke ntev / luv luv | Multiplexing Technologies, Scalability |
| CATV Networks | High Signal Quality, Wide Coverage | Ntev Ntev | Siab tso zis zog, Distortion Control |
| Kev soj ntsuam Systems | Stable & Txhim khu kev qha, Siab Adaptability | Nruab nrab -Short Distance | Strong Environmental Adaptability, Yooj Yim Deployment |
Nyob rau hauv lub tshav pob ntawm cov ntaub ntawv chaw interconnects, qhov me me thiab lub teeb yuag xwm ntawmfiber ntau optic transmitterstso cai rau kev hloov pauv tau yooj yim thiab teeb tsa hauv qhov chaw -ib puag ncig txwv. Siv optical modules thiab patch cords ua rau siab - ceev cabling thiab chaw nres nkoj xa tawm, ua tau raws li qhov xav tau ntawm cov chaw loj - cov ntaub ntawv loj rau kev sib txuas ceev thiab cov khoom siv compactness.
Nrog rau kev txhim kho cov thev naus laus zis tshiab xws li tsheb tsav tsheb, 6G mobile kev sib txuas lus, thiab kev sib txuas lus quantum, qhov kev thov rau fiber ntau optic tes hauj lwm tau nce ntxiv. Cov ntawv thov no xav tau cov ntaub ntawv sib kis ntau dua thiab qis dua latency, uas ib txwm muaj fiber ntau optic transmitters tsis tuaj yeem txaus siab.
WESORAM qhov project tsim los ntawm Lub Tebchaws Yelemees lub koom haum Fraunhofer tau ua tiav qhov kev ua tau zoo ntawm kev ua haujlwm ntawm 8 qhov kev tawm tswv yim rau 16 cov khoom tso tawm. Qhov kev muaj peev xwm "cross-txuas" no ua rau muaj peev xwm ua kom muaj peev xwm hauv lub network thiab muab kev yooj yim dua rau kev sib kis thiab kev sib txuas ntawm cov ntaub ntawv ntws.
Tshwj xeeb tsim fiber ntau optic transmitters kuj ua lub luag haujlwm tseem ceeb hauv cable TV (CATV) tes hauj lwm. Piv txwv li, EMCORE's I-Type Medallion 6000 series 1550 nm externally modulated transmitters yog optimized rau thoob ntiaj teb CATV systems, txhawb fiber ntau txuas mus txog 150 kilometers.
04 Kev Txhim Kho Kev Lag Luam
Fiber optic transmitter thev naus laus zis tab tom txhim kho sai, nrog ntau txoj haujlwm tshawb fawb tshiab ua kom muaj kev vam meej hauv daim teb no. Cov kws tshawb fawb tau ua tiav qhov kev sib tw loj hauv kev sib txuas lus ntawm fiber ntau optic, paub txog qhov sib kis ntawm 1.84 Pbit / s tshaj li ntawm kwv yees li 8-kilometer-ntev fiber ntau.
Qhov kev ceev no sib npaug rau kev xa cov ntaub ntawv los ntawm kwv yees li 236 ib qho -terabyte (1TB) hard drives ib ob, kwv yees li ob npaug ntawm tag nrho cov kev lag luam hauv ntiaj teb tam sim no. Qhov tshwj xeeb tshaj yog, pab pawg tshawb fawb tau ua tiav qhov nrawm tshaj 1 Pbit / s thawj zaug siv tsuas yog "ib lub laser + ib qho khoom siv kho qhov muag."
Optical zaus zuag thev naus laus zis yog qhov tseem ceeb rau qhov kev ua tiav no. Lub tshuab no hloov lub teeb los ntawm lub laser infrared mus rau hauv zaj sawv spectrum uas muaj ntau xim, qhov twg zaus thiab zaus sib txawv ntawm txhua lub teeb monochromatic yog tsau, ua rau nws haum rau wavelength division multiplexing.
Tag nrho cov tsim teeb pom kev zoo sib xws, tso cai rau kev sib koom ua ke cov teeb liab digital ua haujlwm ntawm cov channel sib txawv, thaum kawg ua kom cov ntaub ntawv xa mus sai heev.
Kev vam meej tseem ceeb kuj tau ua nyob rau hauv ntau -core fiber ntau technology. Ib pab neeg tshawb fawb los ntawm US National Institute of Standards and Technology (NIST) tau ua pov thawj thawj zaug tias ultra- qhov chaw ruaj khov kho qhov muag atomic moos teeb liab tuaj yeem sib txuas nrog cov ntaub ntawv xov tooj hauv ntau - cov tub ntxhais fiber ntau siv ntau tshaj kaum mais.
Qhov no txhais tau hais tias tawm los siab - muaj peev xwm fiber ntau tes hauj lwm yuav tsis tau tsuas yog xa cov ntaub ntawv loj heev tab sis kuj muaj peev xwm synchronize atomic moos thoob ntiaj teb nrog siab precision.
05 Kev Sib Tw thiab Yav Tom Ntej
Txawm hais tias muaj kev vam meej, fiber ntau optic transmitter technology tseem ntsib ntau yam teeb meem. Tus nqi yog ib qho ntawm lawv, tshwj xeeb tshaj yog nyob rau hauv wavelength division multiplexing (WDM) systems, qhov twg tus nqi ntawm optical thiab optoelectronic Cheebtsam yog siab, ib feem yog vim li cas rau qhov tseeb wavelength tuning.
Lub cev lub cev ntawm dielectrics siv hauv cov khoom no yog qhov kub thiab txias -nyob ntawm. Qhov kub rhiab heev no tuaj yeem ua rau hloov pauv hauv cov lim wavelengths.
OPTIMUX qhov project, pib los ntawm Fraunhofer HHI lub koom haum, tau mob siab rau tsim kho tshiab thiab muaj txiaj ntsig multiplexing daws rau tag nrho txoj kev sib kis. Lub phiaj xwm tsom mus rau qhov zoo tshaj plaws multiplexing tswv yim rau fiber optic cov ntaub ntawv xa mus siv spatial multiplexing, aiming kom ua tiav cov cim tus nqi siab li 300 GBd.
Nrog kev txhim kho sai ntawm digitization thiab nce ntawm cov ntaub ntawv -tsim daim ntawv thov, network infrastructure uas twb muaj lawm nce mus txog nws cov kev txwv. Thaum wavelength division multiplexing yog ib txoj hauv kev, spatial multiplexing muaj txoj hauv kev tshiab rau kev ua kom zoo dua hauv network. Los ntawm kev siv ntau lub fiber ntau cores thiab hom kis tau tus mob, lub peev xwm tuaj yeem nce ntxiv.
