Ka nts'etsopele e tsoelang pele ea indasteri ea puisano ea optical, theknoloji e ncha le litharollo tsa ho boloka litšenyehelo li ntse li tsoela pele ho hlahisa.Ka mohlala, lihlahisoa tsa CWDM le DWDM li ntse li sebelisoa haholo, kahoo kajeno re tla ithuta ka lihlahisoa tsa CWDM le DWDM!
CWDM ke theknoloji ea phetisetso ea WDM e theko e tlase bakeng sa sebaka sa phihlello sa marang-rang a sebaka sa litoropo.Ho boloka lisebelisoa tsa fiber ka katleho le litšenyehelo tsa marang-rang, e rarolla mathata a mabeli a khaello ea fiber le phetiso e hlakileng ea lits'ebeletso tse ngata.Marang-rang a ka hahuoa mme khoebo e ka etsoa ka nako e khuts'oane.
Melemo ea CWDM:
※ Molemo oa bohlokoa ka ho fetisisa oa CWDM ke theko e tlaase ea thepa.
※ E ka fokotsa litšenyehelo tsa ts'ebetso ea marang-rang.
※ E ka eketsa haholo matla a phetisetso ea fiber ea optical le ho ntlafatsa ts'ebeliso ea lisebelisoa tsa optical fiber.
※ Boholo bo nyane le tšebeliso e tlase ea matla.
※ E na le maemo a bonolo le a bonolo
DWDM e ka kopanya le ho fetisa maqhubu a fapaneng ka har'a fiber e tšoanang ka nako e le 'ngoe.E le hore e atlehe, fiber e le 'ngoe e fetoloa ho li-multiple virtual fibers.Hangata DWDM e na le liforomo tse peli tsa kopo: DWDM e bulehileng le DWDM e kopantsoeng.
Melemo ea DWDM:
※ Protocol ea eona le lebelo la phetisetso ha li na thuso.
※ Multiplexer le splitter ea sistimi e kopaneng ea DWDM e sebelisoa ka thoko ho transmitter le moamoheli.
※ Thepa e kopantsoeng ea DWDM e na le mohaho o bonolo le molumo o monyenyane, hoo e ka bang karolo ea bohlano feela ea sebaka se nkiloeng ke DWDM e bulehileng, ho boloka lisebelisoa tsa kamore ea k'homphieutha.
※ Sistimi e kopaneng ea DWDM e sebelisa feela likarolo tse sa sebetseng (tse joalo ka li-multiplexers kapa li-demultiplexers) pheletsong ea ho amohela le ho fetisa.Basebelisi ba lithelefono ba ka beha litaelo ka kotloloho ho tsoa ho baetsi ba lisebelisoa, ba fokotsa likhokahano tsa phepelo le litšenyehelo tse tlase, ka hona ba boloka litšenyehelo tsa lisebelisoa.
CWDM le DWDM ka bobeli ke li-multiplexers tsa karohano ea maqhubu, joale phapang ke efe lipakeng tsa tsona?CWDM (ke hore, sparse wavelength division multiplexing) le DWDM (ke hore, dense wavelength division multiplexing), ka ho toba re ka bona phapang pakeng tsa tse peli: "dense" le "sparse".Sparse Wavelength Division Multiplexing, joalo ka ha lebitso le bontša, ke setho se haufi sa Dense Wavelength Division Multiplexing.
Liphapang tsa bona li bonahala haholo-holo lintlheng tse tharo tse latelang:
1) CWDM carrier channel spacing e batla e le bophara, ka hona, ke 5 feela ho 6 wavelengths ea maqhubu a leseli a ka atisang ho feta ka fiber e tšoanang ea optical, 'me phapang pakeng tsa mabitso a "sparse" le "dense" e tsoa ho sena;
2) CWDM modulated laser e sebelisa laser e sa pholileng, ha DWDM e sebelisa laser e pholileng.Laser e pholisitsoeng e sebelisa tokiso ea mocheso, 'me laser e sa pholileng e sebelisa tokiso ea elektroniki.CWDM e se e tumme haholo har'a bafani ba likopo tsa likhoebo tse akaretsang.Ka mantsoe a bonolo feela: DWDM ke karoloana ea CWDM.
3) Tikoloho ea tšebeliso ea lisebelisoa e fapane.CWDM e sebelisoa haholo-holo karolong ea convergence le lera la ho fihlella;DWDM e sebelisoa tikolohong e sebetsang ea puisano ea terene.
Nako ea poso: Jul-03-2021