Hauv kev sib txuas lus hauv network, kev tsim cov optical nodes yog qhov hloov pauv loj heev. Cov nodes no ua lub luag haujlwm tseem ceeb hauv kev xa cov ntaub ntawv, lub suab thiab cov cim video, thiab lawv txoj kev loj hlob tau cuam tshuam loj heev rau kev ua haujlwm zoo thiab kev ceev ntawm cov kab ke sib txuas lus niaj hnub. Hauv cov blog no, peb yuav tshawb nrhiav kev hloov pauv ntawm optical nodes thiab lawv lub luag haujlwm hauv kev sib txuas lus hauv network.
Lub tswv yim ntawmcov nodes kho qhov muagTxij thaum pib ntawm kev siv tshuab fiber optic. Thaum xub thawj, cov nodes no yog cov khoom siv yooj yim siv los hloov cov teeb liab optical mus rau hauv cov teeb liab hluav taws xob thiab rov qab los. Lawv ua haujlwm ua qhov chaw sib txuas ntawm cov tes hauj lwm fiber optic thiab cov khoom siv sib txuas lus ib txwm muaj. Txawm li cas los xij, thaum thev naus laus zis nce qib, lub luag haujlwm ntawm cov nodes optical txuas ntxiv nthuav dav, thiab lawv tau dhau los ua ib qho tseem ceeb hauv kev xa cov tes hauj lwm sib txuas lus siab heev.
Ib qho ntawm cov kev nce qib tseem ceeb hauv kev siv tshuab optical node yog kev koom ua ke ntawm wavelength division multiplexing (WDM) functionality. WDM tso cai rau ntau cov ntaub ntawv ntws kom xa tau tib lub sijhawm hla ib lub fiber siv cov wavelengths sib txawv ntawm lub teeb. Cov thev naus laus zis no ua rau muaj peev xwm thiab kev ua haujlwm ntawm cov tes hauj lwm optical ntau ntxiv, ua rau muaj kev xa cov ntaub ntawv ntau ntawm qhov ceev ceev.
Lwm txoj kev loj hlob tseem ceeb hauv kev siv tshuab optical node yog kev koom ua ke ntawm cov amplifiers optical. Cov amplifiers no yog siv los ua kom lub zog ntawm cov teeb liab optical nce ntxiv, tso cai rau lawv kom xa mus rau qhov deb dua yam tsis tas yuav siv cov khoom siv rov ua dua tshiab kim thiab nyuaj. Kev koom ua ke ntawm cov amplifiers optical rau hauv cov nodes optical tau hloov qhov kev ua si rau cov tes hauj lwm sib txuas lus ntev, ua rau muaj kev xa cov kev sib txuas lus muaj peev xwm siab, ceev ceev hla qhov deb ntev.
Ntxiv rau, kev tsim cov optical nodes tau ua rau muaj kev tsim cov reconfigurable optical add-drop multiplexers (ROADMs). Cov khoom siv no tso cai rau cov neeg teb xov tooj network kom rov kho dua cov kev teeb tsa optical hauv lawv cov network, ua rau muaj kev faib bandwidth thiab ua rau muaj kev ywj pheej ntawm network. ROADM-enabled optical nodes ua lub luag haujlwm tseem ceeb hauv kev xa cov agile, adaptable communications networks uas muaj peev xwm ua tau raws li qhov xav tau ntawm bandwidth thiab kev sib txuas.
Cov kev nce qib tshiab hauv thev naus laus zis optical node suav nrog kev koom ua ke ntawm cov peev xwm ntse software-defined networking (SDN). Qhov no tso cai rau kev tswj hwm thiab kev tswj hwm ntawm cov tes hauj lwm optical, ua rau muaj kev teeb tsa dynamic ntawm cov peev txheej network thiab kev tsim kho tsheb zoo. SDN-enabled optical nodes ua rau txoj hauv kev rau kev txhim kho cov tes hauj lwm sib txuas lus tus kheej thiab tus kheej kho, uas muaj peev xwm hloov kho rau cov xwm txheej network hloov pauv hauv lub sijhawm tiag tiag.
Hauv kev xaus, kev txhim kho ntawmcov nodes kho qhov muagtau ua lub luag haujlwm tseem ceeb hauv kev hloov pauv ntawm cov tes hauj lwm sib txuas lus. Txij li cov khoom siv hloov pauv teeb liab yooj yim mus rau cov khoom siv ntse hauv network, cov nodes optical ua lub luag haujlwm tseem ceeb hauv kev ua kom muaj peev xwm xa cov tes hauj lwm sib txuas lus ceev ceev. Raws li thev naus laus zis txuas ntxiv mus, peb tuaj yeem tos ntsoov rau kev tsim kho tshiab hauv thev naus laus zis optical node, tsav tsheb txuas ntxiv kev hloov pauv ntawm cov tes hauj lwm sib txuas lus thiab tsim lub neej yav tom ntej ntawm kev sib txuas.
Lub sijhawm tshaj tawm: Lub Peb Hlis-28-2024