Kulwakhiwo lothungelwano lwendawo yemetropolitan (ingakumbi umgama omde wothungelwano lwe-OTN optical transmission networks), i-wavelength division multiplexing izixhobo zibaluleke kakhulu. I-DWDM i-dense wavelength division multiplexing izixhobo ezinomgama omde, i-high-bandwidth transmission capabilities; Isixhobo sokuphinda-phinda isahlulo se-CWDM se-wavelength sinexabiso eliphantsi. Ke ukuba ukhetha i-wavelength echanekileyo yolwahlulo lwezixhobo zokuphinda-phinda ukwakha inkqubo yokuhanjiswa kwe-optical enexabiso elisebenzayo?

Yintoni umahluko phakathiI-CWDM/DWDM Multiplexer?

Okwangoku, indlela esebenzayo yokusombulula ukunyuka okuqhubekayo kwe-bandwidth yolwazi kukusebenzisa i-CWDM wavelength division multiplexing izixhobo kunye ne-DWDM wavelength division multiplexing izixhobo, kodwa zihluke kwiinkalo ezininzi.

(1) Isithuba somjelo phakathi kwe-CWDM wavelength division multiplexing izixhobo kunye ne-DWDM wavelength division multiplexing izixhobo

Izithuba zesitishi zichazwa njengomahluko kumaxesha aqhelekileyo othutho phakathi kweetshaneli ezimbini ezikufutshane, kwaye ngokuqhelekileyo zisetyenziselwa ukuthintela ukuphazamiseka phakathi kwamatshaneli. Isixhobo sokuphindaphinda icandelo le-wavelength se-CWDM sinesithuba esibanzi kunesixhobo sokuphindaphinda icandelo le-wavelength ye-DWDM. Iyakwazi ukuhambisa i-18 wavelengths kwigridi ye-spectral ukusuka kwi-1271 nm ukuya kwi-1611 nm kunye nesithuba sesiteshi se-20 nm. I-DWDM yecandelo le-wavelength ye-multiplexing izixhobo zinokuhambisa i-40, i-80 okanye i-160 ubude be-wavelengths, kwaye i-channel space ingaba yi-0.8 nm.

(2) Umgama wokuhanjiswa phakathi kwe-CWDM wavelength division multiplexing izixhobo kunye ne-DWDM wavelength division multiplexing izixhobo

Ngenxa yokuba i-wavelength ye-dense wavelength division multiplexing equipment (DWDM) idityaniswe kakhulu kwinkqubo yokuhanjiswa kwe-fiber optical, i-DWDM ye-wavelength division multiplexing izixhobo zinokuhambisa umgama omde kune-CWDM wavelength division multiplexing izixhobo. I-CWDM ye-wavelength division multiplexing izixhobo okwangoku azikwazi ukufikelela kuthungelwano lomgama ongenamkhawulo, kwaye umgama wawo omkhulu wothumelo ziikhilomitha ezingama-160 kuphela, ngelixa umgama wothumelo we-DWDM wavelength division multiplexing izixhobo udlula kakhulu lowo we-CWDM wavelength division multiplexing izixhobo.

(3) I-laser ehlengahlengisiweyo ye-CWDM ye-wavelength division multiplexing izixhobo kunye ne-DWDM wavelength division multiplexing izixhobo

Inkqubo ye-CWDM ye-wavelength division multiplexing izixhobo zineemfuno eziphantsi kwiimpawu zobugcisa be-laser, kwaye ngokuqhelekileyo isebenzisa i-laser engapheliyo; Inkqubo ye-DWDM ye-wavelength division multiplexing izixhobo kufuneka isebenzise i-laser yokupholisa, kwaye i-laser yokupholisa ithatha indlela yokulungiswa kweqondo lokushisa ukuqinisekisa ukuba inkqubo ye-DWDM inokusebenza okungcono, ukhuseleko oluphezulu kunye nobomi benkonzo obude, ngoko ke i-DWDM ye-wavelength division multiplexer Idla amandla amaninzi. kune-CWDM wavelength division multiplexing izixhobo zisebenzisa iilaser ezingapholiswanga

(4) Iindleko ze-CWDM wavelength division multiplexing izixhobo kunye ne-DWDM wavelength division multiplexing izixhobo

Inkqubo ye-DWDM ye-wavelength ye-multiplexing ye-wavelength yezixhobo ine-non-uniform yokusabalalisa ubushushu kwi-wide wavelength range, ngoko xa iteknoloji ye-laser yokupholisa isetyenziselwa ukulungelelanisa ubushushu, iindleko zokusetyenziswa kwenkqubo ye-DWDM ye-wavelength division multiplexing izixhobo zonyuka. Ukongeza, inkqubo ye-DWDM ye-wavelength division multiplexing izixhobo zihlala zixabisa kane ukuya kahlanu kunenkqubo ye-CWDM ye-wavelength division multiplexing izixhobo. Nangona kunjalo, ngokunyuka kokuthandwa kwe-dense wavelength division multiplexers (DWDM), ixabiso leemodyuli ze-DWDM optical phantse i-20% -25% ephantsi kuneemodyuli ze-CWDM optical.