Mumunda wekufonera, data center yekubatanidza, uye kufambisa kwevhidhiyo, fiber optic cabling inodiwa zvakanyanya. Nekudaro, chokwadi ndechekuti iyo fiber optic cabling haisisiri yehupfumi kana sarudzo inogoneka kuita kune yega yega sevhisi. Nokudaro kushandisa Wavelength Division Multiplexing (WDM) yekuwedzera huwandu hwefiber pane huripo huripo huripo hunokurudzirwa zvikuru. WDM tekinoroji inowanza masaini masaini akawanda pane imwechete fiber nekushandisa akasiyana wavelengths yelaser light. Kudzidza nekukurumidza kweminda yeWDM kuchaiswa paCWDM neDWDM. Iwo akavakirwa papfungwa imwechete yekushandisa akawanda wavelengths echiedza pane imwechete fiber. Asi ivo vaviri vane hunhu hwavo uye nekuipa kwavo.
Chii chinonzi CWDM?
CWDM inotsigira kusvika ku18 wavelength chiteshi chinofambiswa kuburikidza nefiber panguva imwe chete. Kuti uite izvi, iwo akasiyana wavelengths ega ega chiteshi ari 20nm akaparadzana. DWDM, inotsigira kusvika ku80 panguva imwe chete yewavelength chiteshi, neimwe yenzira chete 0.8nm yakaparadzana. CWDM tekinoroji inopa yakanakira uye inodhura-inoshanda mhinduro kune mapfupi madaro anosvika makumi manomwe emakiromita. Pamafambo ari pakati pemakiromita makumi mana kusvika makumi manomwe, CWDM inenge iine inogumira pakutsigira nzira sere.
A CWDM system inowanzo tsigira masere wavelengths pafiber uye yakagadzirirwa kupfupika-renji kutaurirana, uchishandisa yakafara-renji ma frequency ane wavelengths akapararira kure kure.
Sezvo CWDM yakavakirwa pa20-nm chiteshi spacing kubva pa1470 kusvika 1610 nm, inowanzoiswa pafiber spans kusvika 80km kana zvishoma nekuti optical amplifiers haigone kushandiswa nehombe spacing chiteshi. Uku kuparadzaniswa kwakakura kwemachanera kunobvumira kushandiswa kwemaoptics ane mutengo une mwero. Zvisinei, kukwanisa kwezvisungo pamwe chete nedaro rinotsigirwa zvishoma neCWDM pane neDWDM.
Kazhinji, CWDM inoshandiswa kune yakaderera mutengo, yakaderera simba (sub-10G) uye mapfupi kureba maapplication uko mutengo chinhu chakakosha.
Munguva pfupi yapfuura, mitengo yeCWDM neDWDM zvikamu zvave zvakaenzana. CWDM wavelengths parizvino inokwanisa kutakura kusvika ku10 Gigabit Ethernet uye 16G Fiber Channel, uye hazvigoneke kuti hunyanzvi uhu huwedzere kuwedzera mune ramangwana.
Chii chinonzi DWDM?
Kusiyana neCWDM, DWDM yekubatanidza inogona kukwidziridzwa uye inogona, saka, kushandiswa kufambisa data madaro akareba.
MuDWDM masisitimu, huwandu hwemachannel akapetwa hwakanyanya kuomarara kupfuura CWDM nekuti DWDM inoshandisa yakaomarara wavelength spacing kuti ikwane mamwe machannel pane imwechete fiber.
Panzvimbo peiyo 20 nm chiteshi spacing inoshandiswa muCWDM (yakaenzana nemamiriyoni gumi neshanu GHz), masisitimu eDWDM anoshandisa nzira dzakasiyana dzakatarwa kubva pa12.5 GHz kusvika 200 GHz muC-Band uye dzimwe nguva L-bhendi.
Masisitimu emazuva ano eDWDM anowanzo tsigira 96 chiteshi chakaparadzaniswa ne0.8 nm mukati me1550 nm C-Band spectrum. Nekuda kweizvi, masisitimu eDWDM anogona kufambisa huwandu hukuru hwe data kuburikidza nefiber link imwe chete sezvo achibvumira mamwe mawavelength akawanda kuti aiswe pane imwechete fiber.
DWDM yakanakira kutaurirana kwenguva refu kusvika ku120 km uye kupfuura nekuda kwekugona kwayo kukwidziridza optical amplifiers, izvo zvinogona kudhura-zvinobudirira kukudza iyo yose 1550 nm kana C-band spectrum inowanzoshandiswa muDWDM application. Izvi zvinokunda kureba kwekurebesa kana chinhambwe uye kana chasimudzirwa neErbium Doped-Fiber Amplifiers (EDFAs), masisitimu eDWDM ane kugona kutakura huwandu hwakawanda hwedata panzendo refu dzinosvika kumazana kana zviuru zvemakiromita.
Pamusoro pekugona kutsigira nhamba yakakura yewavelengths kupfuura CWDM, DWDM mapuratifomu anokwanisawo kubata mapuroteni ekumhanya zvakanyanya sevatengesi vemidziyo yekufambisa yakawanda nhasi vanowanzo tsigira 100G kana 200G pawavelength apo tekinoroji dziri kubuda dziri kubvumira 400G uye kupfuura.
DWDM vs CWDM wavelength spectrum:
CWDM ine nzvimbo yakafara yechiteshi kupfuura DWDM -- musiyano wezita mukuwanda kana wavelength pakati pematanho maviri akatarisana.
CWDM masisitimu anowanzo takura mawavelength masere ane chiteshi chepakati che20 nm mugedhi remagetsi kubva pa1470 nm kusvika 1610 nm.
DWDM masisitimu, kune rumwe rutivi, anogona kutakura 40, 80, 96 kana kusvika 160 wavelengths nekushandisa nzvimbo yakatetepa 0.8/0.4 nm (100 GHz/50 GHz grid). DWDM wavelengths anowanzo kubva 1525 nm kusvika 1565 nm (C-band), aine mamwe masisitimu anokwanisa kushandisa wavelengths kubva pa1570 nm kusvika 1610 nm (L-band).
CWDM Zvakanakira:
1. Mutengo Wakaderera
CWDM yakachipa zvakanyanya pane DWDM nekuda kwemitengo yehardware. CWDM sisitimu inoshandisa inotonhorera lasers iyo yakachipa zvakanyanya kupfuura DWDM isina kutonhorera lasers. Mukuwedzera, Mutengo weDWDM transceivers inowanzodhura ina kana kashanu kupfuura iyo yeCWDM modules. Kunyange mari yekushanda yeDWDM yakakwirira kudarika CWDM. Saka CWDM isarudzo yakanaka kune avo vane miganhu mumari.
2. Simba Rinodiwa
Zvichienzaniswa neCWDM, simba rinodiwa kuDWDM rakakwirira zvikuru. Sezvo DWDM lasers pamwe chete neinosanganisirwa yekutarisa uye yekudzora dunhu inodya yakatenderedza 4 W pawavelength. Zvichakadaro, isina kutonhorera CWDM laser transmitter inoshandisa inenge 0.5 W yesimba. CWDM tekinoroji yepasirese isingashandisi simba remagetsi. Iine mhedzisiro yakanaka yemari kune vashandisi veinternet.
3. Easy Operation
Masisitimu eCWDM anoshandisa tekinoroji iri nyore maererano neDWDM. Inoshandisa LED kana Laser simba. Iwo mafirita eCWDM masisitimu madiki uye akachipa. Saka ivo vari nyore kuiswa uye kushandiswa.
DWDM Zvakanakira:
1. Flexible Upgrade
DWDM inoshanduka uye yakasimba maererano nemhando dzefiber. DWDM inovandudza kune 16 migero inoshanda pane zvose G.652 uye G.652.C fibers. Pakutanga kubva pakuti DWDM inogara inoshandisa nzvimbo yakaderera yekurasikirwa kwefiber. Nepo 16 chiteshi CWDM masisitimu anosanganisira kutapurirana munharaunda ye1300-1400nm, uko kudzikamisa kwakakwira zvinoshamisa.
2. Scalability
DWDM mhinduro dzinobvumira kukwidziridzwa mumatanho ezviteshi zvisere kusvika pakukwirira kwe40 chiteshi. Vanobvumira huwandu hwakanyanya hwepamusoro pane fiber pane mhinduro yeCWDM.
3. Kureba Kuendesa Distance
DWDM inoshandisa 1550 wavelength bhendi iyo inogona kukwidziridzwa uchishandisa yakajairwa optical amplifiers (EDFA's). Inokwirisa kutapurirana kureba kusvika kumazana emakiromita.
Mufananidzo unotevera uchakupa maonero ekuona kwekusiyana pakati peCWDM neDWDM.
Nguva yekutumira: Jun-14-2022