OADM yog dab tsi?
Oadm, tag nrho cov ntaub ntawv puv rau kho qhov muag ntxiv-sawv motionxer, sawv raws li cov cuab yeej siv hluav taws xob tsis pub dhau ntawm kev sib txuas lus. Nws tseem ceeb ua haujlwm los pab txhawb nruab nrab thiab multeming ntawm ceg qhia npe nyob rau hauv lub chaw kho qhov muag, ntawm constituting ib qho kev sib txuas lus kho qhov muag hauv txhua qhov kev sib txuas lus. Los ntawm enterping cov ntaub ntawv pob tshab uas tsis muaj qhov xav tau kev hloov pauv hloov tshiab, oadm ncig xyuas hluav taws xob hauv hluav taws xob, txhawb nqa ib puag ncig thiab muaj kev vam meej network.
Cov haujlwm tseem ceeb ntawm Oadm
Qhov tseem ceeb ntawm Oadm lus dag hauv nws lub peev xwm cais los yog ntxig rau ib lossis ntau wavelengths los ntawm ntau wavelength channel. Qhov no cuam tshuam nrog ob txoj kev sib txawv: "Ntxiv" (ntawm-txoj kev) thiab "poob" (tawm-txoj kev). On-hears entails sib xyaw ua ke nrog lub wavelength tshiab mus rau hauv cov teeb liab hloov kho tshiab thiab multiplexing nws nrog lwm txoj channel nyob rau hauv cov fiber. Conversely, tawm-txoj kev muaj kev rho tawm ib qho wavelength channel los ntawm kev nkag mus rau hauv adm uninated raws. Cov khoom siv tau muab xa mus rau cov khoom tsim nyog rau kev pabcuam pabcuam tom ntej, ntau dua li ua pov tseg.
Hom thiab qauv ntawm oadm
Raws li qhov hloov tau zoo nyob rau hauv kev ua tiav kev ua tiav thiab poob, Oadm tuaj yeem raug cais rau hauv kev ruaj khov (favm) thiab roadm). FADM txwv tsis pub siv ib lossis ntau cov wavelengths, nrog ib qho kev ua ntej ntawm txoj kev tsis muaj peev xwm. Dua li ntawm no, foadm boasts txhim khu kev qha thiab qis latency. Conversely, txoj kev muaj kev hloov kho kom zoo rau lub nthwv dej rau sab saud thiab kev txhim kho kho tshiab ntawm lub wavelach cov peev txheej.
Lub plawv ntawm Oadm ntaus ntawv yog lub lim khoos phis tawm, uas xaiv lub wavelength rau nce \/ down txoj kev thiab pab txhawb waverength kev ncig. Tam sim no, paub tab ntxaij siv tshuaj nyob rau hauv OuaoTo-optic tunto-vours waveguide gratings (AWGS), thiab Fiber Bagg Gratings (FBGS).
Cov ntawv thov thiab cov txiaj ntsig ntawm OADM
Oadm cov cuab yeej pom cov ntawv thov dav dav hauv cov tsheb ntev ntev thiab cov cheeb tsam hauv nroog). Nyob rau hauv cov kab ntawv kab laum, adm yog kev xaiv uas xav tau rau cov nruab nrab uas xav tau cov kev pab cuam nruab nrab thiab cov kev pabcuam hauv qab. Nyob rau hauv cov txiv neej, adm kev txuas ntxiv yooj yim thiab yooj yim ntawm cov khoom siv hluav taws xob thiab kev nthuav dav, ua rau nws muaj kev pabcuam ntau cov kev pabcuam hluav taws xob.
Oadm tso cai rau ntau lub wavelength ntawm cov cim sib txawv los ntawm ntau qhov chaw kho kho tshiab ntawm cov ntaub ntawv sib txawv, cov ntaub ntawv ua kom zoo ntawm cov ntaub ntawv ua haujlwm tau zoo. Piv rau cov teeb meem hluav taws xob DipleXers, Oadm muaj cov pob tshab thiab lub peev xwm los lis cov cim ntawm ib hom ntawv thiab tus nqi, muab kev ua haujlwm zoo dua.
Kev loj hlob ntawm adm
Raws li cov ntaub ntawv thev naus laus zis sai thiab qhov kev thov rau cov ntaub ntawv tseem loj tuaj, kev sib txuas lus hauv network tau dhau los ua qhov tseem ceeb. Raws li cov cuab yeej sib txuas lus fiber ntau, OADM muab kev txhawb nqa tseem ceeb rau kev sib txuas lus hauv network. Tam sim no, reconfigurable adm tau tshwm sim raws li kev qhia tseem ceeb. Tshaj dhau kev siv kho qhov muag hloov mus rau dynamically xaiv wavelengths rau ntxiv thiab poob dej, kev ua haujlwm ntawm lub lim dej kuj yog thaj chaw focal ntawm kev txaus siab.
Hauv cov ntsiab lus, raws li cov cuab yeej tseem ceeb hauv txhua qhov kev lag luam tawm, qhov tseem ceeb ntawm OADM yog undeniable. Nrog cov kev nce qib thev naus laus zis thiab nthuav tawm cov kev xaiv scenarios, OAD yuav ua tiav cov luag haujlwm tseem ceeb tshaj plaws hauv kev sib txuas lus hauv kev sib txuas lus yav tom ntej hauv kev sib txuas lus hauv kev sib txuas lus yav tom ntej hauv kev sib txuas lus hauv kev sib txuas lus yav tom ntej hauv kev sib txuas lus hauv kev sib txuas lus yav tom ntej.
