Ngophuhliso oluqhubekayo lweshishini lonxibelelwano lwe-optical, ubuchwepheshe obutsha kunye nezisombululo zokonga iindleko ziyaqhubeka zifumaneka.Ngokomzekelo, iimveliso ze-CWDM kunye ne-DWDM zisetyenziswa ngokubanzi, ngoko namhlanje siza kufunda malunga ne-CWDM kunye neemveliso ze-DWDM!
I-CWDM yitekhnoloji yothumelo ye-WDM enexabiso eliphantsi ukwenzela umaleko wokufikelela kuthungelwano lwengingqi yemetropolitan.Ukugcina ngokufanelekileyo izibonelelo zefiber kunye neendleko zothungelwano, isombulula iingxaki ezimbini zokunqongophala kwefayibha kunye nokuhanjiswa okucacileyo kweenkonzo ezininzi.Inethiwekhi inokwakhiwa kwaye ishishini linokuqhutywa ngexesha elifutshane.
Izinto eziluncedo zeCWDM:
※ Inzuzo ebaluleke kakhulu ye-CWDM yindleko ephantsi yezixhobo.
※ Inokunciphisa iindleko zokusebenza zenethiwekhi.
※ Inokunyusa kakhulu amandla okuhambisa i-fiber optical kunye nokuphucula ukusetyenziswa kwezixhobo zefiber optical.
※ Ubungakanani obuncinci kunye nokusetyenziswa kwamandla aphantsi.
※ Ukwazi ukuguquguquka okuhle kunye nokuqina
I-DWDM inokudibanisa kwaye idlulise amaza ahlukeneyo ahlukeneyo kwifiber efanayo ngexesha elinye.Ukuze isebenze, ifayibha enye iguqulwa ibe ziintsinga ezininzi.I-DWDM idla ngokuba neefom ezimbini zesicelo: i-DWDM evulekileyo kunye ne-DWDM edibeneyo.
Izinto ezilungileyo zeDWDM:
※ Iprotocol yayo kunye nesantya sothumelo ayinamsebenzi.
※ I-multiplexer kunye ne-splitter yenkqubo edibeneyo ye-DWDM isetyenziswa ngokwahlukileyo kwi-transmitter kunye nomamkeli.
※ Izixhobo ezidibeneyo ze-DWDM zinesakhiwo esilula kunye nomthamo omncinci, kuphela malunga nesihlanu sendawo ehlala i-DWDM evulekile, ukugcina izixhobo zegumbi lekhompyutha.
※ Inkqubo edibeneyo ye-DWDM isebenzisa kuphela amacandelo angenayo (njengama-multiplexers okanye i-demultiplexers) ekufumaneni nasekudluliseni iziphelo.Abaqhubi be-Telecom banokubeka ii-odolo ngokuthe ngqo kubenzi besixhobo, ukunciphisa amakhonkco okubonelela kunye neendleko eziphantsi, ngaloo ndlela begcina iindleko zezixhobo.
I-CWDM kunye ne-DWDM zombini ziphinda-phindwa zezahlulo zamaza, ngoko ke yintoni umahluko phakathi kwazo?I-CWDM (okt, i-sparse wavelength division multiplexing) kunye ne-DWDM (okt, i-dense wavelength division multiplexing), ngokoqobo sinokubona ngokucacileyo umahluko phakathi kwezi zimbini: "dense" kunye "ne-sparse".I-Sparse Wavelength Division Multiplexing, njengoko igama libonisa, sisihlobo esisondeleyo se-Dense Wavelength Division Multiplexing.
Umahluko wabo ubonakaliswa ikakhulu kula manqaku mathathu alandelayo:
I-1) I-CWDM ye-carrier carrier spacing ibanzi, ngoko ke, kuphela i-5 ukuya kwi-6 ye-wavelengths yamaza okukhanya inokuphinda iphindwe kwi-fiber optical efanayo, kwaye umehluko phakathi kwamagama "ancinci" kunye "nobunzima" uvela kule nto;
I-2) I-laser emodulisiweyo ye-CWDM isebenzisa i-laser engapheliyo, ngelixa i-DWDM isebenzisa i-laser epholileyo.I-laser epholileyo isebenzisa ukulungiswa kobushushu, kwaye i-laser engapholiswanga isebenzisa ukulungiswa kwe-elektroniki.I-CWDM ngoku idume kakhulu phakathi kwababoneleli bezicelo zeshishini ngokubanzi.Ukubeka ngokulula: I-DWDM yisahlulo se-CWDM.
3) Indawo yokusetyenziswa kwesixhobo yahlukile.I-CWDM isetyenziswa ikakhulu kwi-convergence layer kunye ne-access layer;I-DWDM isetyenziswa kwindawo yokusebenza yonxibelelwano lukaloliwe.
Ixesha lokuposa: Jul-03-2021