Ha ho hahoa marang-rang a libaka tsa metse e meholo (haholo-holo marang-rang a nako e telele a OTN optical transmission), lisebelisoa tsa ho arola likarolo tsa wavelength li bohlokoa ka ho khetheha. Thepa ea DWDM dense wavelength division multiplexing e na le bokhoni ba phetisetso ea nako e telele, e phahameng ea bandwidth; Thepa ea CWDM coarse wavelength division multiplexing e na le litšenyehelo tse tlase. Joale haeba u khetha sesebelisoa se nepahetseng sa "wavelength division" sa "multiplexing" ho aha sistimi ea phetisetso ea optical e theko e boima?

Phapano ke efe pakeng tsaCWDM/DWDM Multiplexer?

Hona joale, mokhoa o atlehang oa ho rarolla keketseho e tsoelang pele ea bandwidth ea phetisetso ea tlhahisoleseling ke ho sebelisa lisebelisoa tsa CWDM wavelength division multiplexing le DWDM wavelength division multiplexing lisebelisoa, empa li fapane likarolong tse ngata.

(1) Sebaka sa mocha pakeng tsa lisebelisoa tsa multiplexing tsa CWDM wavelength division le DWDM wavelength division multiplexing lisebelisoa

Phapang ea likanale e hlalosoa e le phapang lipakeng tsa likanale tse peli tse haufi tsa optical, 'me hangata e sebelisoa ho thibela tšitiso ea likanale. CWDM wavelength division multiplexing thepa e na le sebaka se pharaletseng ho feta DWDM wavelength division multiplexing lisebelisoa. E ka fetisa maqhubu a 18 ka har'a marang-rang a spectral ho tloha 1271 nm ho ea 1611 nm ka sebaka sa channel sa 20 nm. Thepa ea DWDM wavelength division multiplexing e ka fetisetsa 40, 80 kapa 160 wavelengths, 'me sebaka sa marang-rang se ka ba 0.8 nm.

(2) Sebaka sa phetisetso pakeng tsa lisebelisoa tsa multiplexing tsa CWDM wavelength division le DWDM wavelength division multiplexing lisebelisoa

Hobane bolelele ba lisebelisoa tsa "dense wavelength division multiplexing" (DWDM) bo kenyelelitsoe haholo ts'ebetsong ea optical fiber transmission, DWDM wavelength division multiplexing thepa e ka fetisetsa libaka tse telele ho feta CWDM wavelength division multiplexing thepa. CWDM wavelength division multiplexing thepa hona joale e ke ke ea finyella phetisetso ea sebaka se sa lekanyetsoang, 'me sebaka sa eona se seholo sa phetisetso ke lik'hilomithara tse 160 feela, ha sebaka sa phetisetso ea DWDM wavelength division multiplexing thepa e feta hōle ea CWDM wavelength division multiplexing thepa.

(3) Li-lasers tse fetotsoeng tsa CWDM wavelength division multiplexing thepa le DWDM wavelength division multiplexing thepa

Sistimi ea CWDM wavelength division multiplexing thepa e na le litlhoko tse tlase ho matšoao a theknoloji ea laser, 'me ka kakaretso e sebelisa laser e sa pholileng; Tsamaiso ea DWDM wavelength division multiplexing thepa e hloka ho sebelisa laser e pholileng, 'me laser e pholileng e nka mokhoa oa ho fetola mocheso ho netefatsa hore tsamaiso ea DWDM e na le ts'ebetso e ntlafetseng, polokeho e phahameng le bophelo bo bolelele ba tšebeletso, kahoo DWDM wavelength division multiplexer E sebelisa matla a mangata. ho feta CWDM wavelength division multiplexing lisebelisoa tse sebelisang li-lasers tse sa pholileng

(4) Litšenyehelo tsa CWDM wavelength division multiplexing thepa le DWDM wavelength division multiplexing thepa

Sistimi ea DWDM wavelength division multiplexing thepa e na le kabo e sa ts'oaneng ea mocheso sebakeng se seholo sa maqhubu, kahoo ha theknoloji ea laser e pholileng e sebelisoa ho lokisa mocheso, litšenyehelo tsa tšebeliso ea sistimi ea DWDM wavelength division multiplexing li eketseha. Ho phaella moo, tsamaiso ea DWDM wavelength division multiplexing thepa hangata e theko e boima ka makhetlo a mane ho isa ho a mahlano ho feta tsamaiso ea CWDM wavelength division multiplexing thepa. Leha ho le joalo, ka botumo bo ntseng bo eketseha ba dense wavelength division multiplexers (DWDM), theko ea DWDM optical modules e batla e le 20% -25% e tlase ho feta ea CWDM optical modules.