Ngokuchasene nophuhliso olukhawulezileyo kwiziseko zophuhliso lwenethiwekhi, imboni yonxibelelwano ijongene nobunzima obukhulu bokukhula. Enye yetekhnoloji ephambili kunxibelelwano lwe-optical - i-Wavelength Division Multiplexing (WDM) - iye yaba sisisombululo esiphambili sokoyisa le mida yomzimba.

Ukuba i-optical fiber ithelekiswa nomgaqo omkhulu, unxibelelwano lwendabuko lwe-single-wavelength lufana nesithuthi esinye esihlala kulo lonke indlela. Itekhnoloji ye-WDM ngokusisiseko yahlula le ndlela ebonakalayo ibe "ziindlela ezibonakalayo" ezininzi ezingaphazamisiyo (ii-wavelengths ezahlukeneyo ze-optical), ezivumela ukuba imiqondiso yedatha emininzi idluliselwe ngaxeshanye nge-fiber efanayo. Isixhobo esiphambili esivumela obu buchwepheshe sisihluzo se-DWDM (Dense Wavelength Division Multiplexing). Eli nqaku linika uhlalutyo olufutshane lwale teknoloji.

I. Imigaqo-siseko kunye neenzuzo zeeFilters ezingasebenziyo

I-Passive DWDM, i-OSP Ring OADM, itshaneli e-1, isithuba se-100 GHz, itshaneli engama-48, i-900um 1m Fiber, i-SC/APC Connector

Igama elithi “passive” lithetha ukuba isixhobo asifuni naluphi na umbane wangaphandle. Endaweni yoko, sixhomekeke ngokupheleleyo kwiingubo ezicociweyo ze-optical thin-film okanye kwizakhiwo ze-grating ukuze sahlukanise ngokuchanekileyo (demultiplex) okanye sidibanise imiqondiso ye-optical (multiplex) yee-wavelengths ezahlukeneyo.

Olu phawu lokukhanya olubonakalayo lubonelela ngozinzo olukhethekileyo kunye nokuthembeka, okwenza isixhobo simelane kakhulu nokuphazamiseka kwe-electromagnetic. Ngenxa yoko, sifaneleke kakhulu ukusebenza ixesha elide kumagumbi ezixhobo zonxibelelwano ezintsonkothileyo okanye kwiindawo zangaphandle ezinzima.

Ngaphakathi kwezakhiwo zenethiwekhi ye-optical, izihluzi ze-DWDM ezingasebenziyo zisebenza “njengabalawuli bezithuthi.” Zilandela ngokungqongqo imigangatho ye-International Telecommunication Union (ITU-T), zahlula ifestile yokudlulisa i-optical elahlekayo ibe ziindidi ezininzi okanye amakhulu eendlela zonxibelelwano ezizimeleyo ezinesithuba esincinci kakhulu sobude be-wavelength.

Oku kuthetha ukuba ifayibha enye ye-optical, eyayikwazi ukuthwala isignali enye kuphela ekuqaleni, inokwandisa ngoko nangoko amandla ayo okudlulisa amaxesha amaninzi, nto leyo ephucula kakhulu ukusebenza kakuhle kwe-spectral.

II. Iimeko eziqhelekileyo zokusetyenziswa kunye nexabiso

I-Passive DWDM, i-OSP Ring OADM, itshaneli e-1, isithuba se-100 GHz, i-Ch52, iMonitor (1%), i-900um 1m Fiber, ngaphandle kwesiXhobo

Ezi zihluzo ezingasebenziyo zihlala ziyilwe ngezakhiwo zokupakisha ezisemgangathweni, ezifana neemodyuli zekhasethi zeLGX okanye amakhadi e-rack-mount ayi-19-intshi, kwaye zixhotyiswe ngezihlanganisi ze-fiber optic ezichanekileyo kakhulu zokudibanisa ngaphandle komthungo kwiinethiwekhi zefayibha zemowudi enye ezikhoyo. Amaxabiso azo aphambili okusetyenziswa aquka:

Ukwandiswa kweMetropolitan Transmission kunye neBackbone Network

Ngaphandle kokongeza iintambo ezintsha zefayibha ebonakalayo, itekhnoloji ye-WDM inokunyusa ngokukhawuleza i-bandwidth yothungelwano lweendawo zedolophu ezinkulu kunye neenethiwekhi zomqolo wengingqi, ukuhlangabezana neemfuno ezinkulu zokudluliselwa kwedatha zeenkonzo ezinje ngokusasazwa kwevidiyo ephezulu kunye ne-cloud computing.

IiNethiwekhi zoFikelelo lwaNgaphandle (OSP) kunye noFikelelo

Ngenxa yeempawu zazo zokungakhawulezi kwaye ezingenalo ulondolozo, ezi zixhobo zisetyenziswa kakhulu kwiinethiwekhi zokusasazwa kwe-optical zangaphandle, nto leyo enciphisa ngempumelelo iindleko zokusebenza kunye nokugcinwa kwexesha elide kwabaqhubi be-telecom.

Unxibelelwano lweZiko leDatha

Ngaphakathi kwamaziko edatha okanye phakathi kwamaziko edatha amaninzi, izihluzi ezingasebenziyo zivumela ukuhanjiswa kwemiqondiso emininzi ebonakalayo ngempumelelo ephezulu kunye nokulahleka okuncinci kakhulu kokufakwa, okuqinisekisa ukuhanjiswa kwedatha okukhawulezayo nokuzinzileyo.