Ekwakhiweni kwamanethiwekhi endawo yedolobha elikhulu (ikakhulukazi amanethiwekhi okudlulisa amehlo e-OTN amabanga amade), imishini yokuphindaphinda ye-wavelength division ibaluleke kakhulu. Imishini ye-DWDM dense wavelength division multiplexing inamakhono okudlulisa ibanga elide, anomkhawulokudonsa ophezulu; Imishini yokuphindaphinda ye-wavelength division ye-CWDM inezindleko eziphansi. Ngakho-ke uma ukhetha umshini wokuphindaphinda we-wavelength we-wavelength ofanele ukwakha uhlelo lokudlulisela optical olungabizi kakhulu?

Uyini umehluko phakathiI-CWDM/DWDM Multiplexer?

Njengamanje, indlela ephumelelayo yokuxazulula ukwanda okuqhubekayo komkhawulokudonsa wokudlulisa ulwazi ukusebenzisa imishini ye-CWDM ye-wavelength division multiplexing kanye nemishini yokuhlukanisa i-wavelength ye-DWDM ye-multiplexing, kodwa ihlukile ezicini eziningi.

(1) Isikhala sesiteshi phakathi kwemishini ye-multiplexing ye-wavelength ye-CWDM kanye nemishini yokuphindaphinda ye-DWDM wavelength division

Isikhala sesiteshi sichazwa njengomehluko wemvamisa yenkampani yenethiwekhi phakathi kwamashaneli amabili aseduze abonayo, futhi ngokuvamile isetshenziselwa ukuvimbela ukuphazamiseka phakathi kweziteshi. Imishini yokuphindaphinda ye-wavelength division ye-CWDM inesikhala esibanzi kunemishini yokuphindaphinda ye-wavelength ye-DWDM. Ingakwazi ukudlulisa amaza angama-18 kugridi ye-spectral isuka ku-1271 nm iye ku-1611 nm ngesikhala sesiteshi esingu-20 nm. I-DWDM wavelength division multiplexing imishini ingadlulisela amaza angama-40, 80 noma angu-160, futhi isikhala sesiteshi singaba ngu-0.8 nm.

(2) Ibanga lokudlulisela phakathi kwemishini ye-multiplexing ye-wavelength ye-CWDM ne-DWDM wavelength division multiplexing imishini

Ngenxa yokuthi ubude be-wavelength be-dense wavelength division multiplexing imishini (i-DWDM) ihlanganiswe kakhulu kwinqubo yokudlulisa i-fiber optical, imishini ye-DWDM ye-wavelength division multiplexing ingadlulisela amabanga amade kunemishini ye-multiplexing ye-wavelength ye-CWDM. Imishini yokuhlanganisa i-wavelength division multiplexing ye-CWDM okwamanje ayikwazi ukuzuza ukudluliswa kwebanga elingenamkhawulo, futhi ibanga layo eliphezulu lokudlulisela lingamakhilomitha angu-160 kuphela, kuyilapho ibanga lokudlulisela lemishini yokuphindaphinda ye-wavelength ye-DWDM lidlula kude lelo le-CWDM wavelength division multiplexing imishini.

(3) Ama-laser ashintshiwe we-CWDM wavelength division multiplexing imishini kanye nemishini ye-DWDM wavelength division multiplexing

Uhlelo lwemishini yokuphindaphinda ye-wavelength division ye-CWDM inezidingo eziphansi ezinkomba zobuchwepheshe ze-laser, futhi ngokuvamile lisebenzisa i-laser engapholisiwe; Isistimu ye-DWDM wavelength division multiplexing imishini idinga ukusebenzisa i-laser yokupholisa, futhi i-laser yokupholisa isebenzisa indlela yokulungiswa kwezinga lokushisa ukuze kuqinisekiswe ukuthi uhlelo lwe-DWDM lusebenza kangcono, ukuphepha okuphezulu nokuphila kwesevisi ende, ngakho-ke i-DWDM wavelength division multiplexer Idla amandla amaningi. kunemishini yokuphindaphinda ye-wavelength division ye-CWDM esebenzisa ama-laser angapholisiwe

(4) Izindleko ze-CWDM wavelength division multiplexing imishini kanye nemishini ye-DWDM wavelength division multiplexing

Uhlelo lwemishini ye-multiplexing ye-DWDM ye-wavelength division ine-non-uniform temperature distribution in a wide wavelength range, ngakho-ke lapho ubuchwepheshe be-laser bokupholisa busetshenziselwa ukulungisa izinga lokushisa, izindleko zokusetshenziswa kwesistimu ye-DWDM wavelength division multiplexing imishini ziyanda. Ukwengeza, uhlelo lwe-DWDM wavelength division multiplexing imishini ngokuvamile lubiza ngokuphindwe kane kuya kahlanu kunesistimu ye-CWDM wavelength division multiplexing imishini. Kodwa-ke, ngokuthandwa okwandayo kwama-dense wavelength division multiplexers (DWDM), intengo yamamojula we-DWDM optical cishe i-20% -25% ephansi kunaleyo ye-CWDM optical modules.