Ithimba labacwaningi abavela eNyuvesi yaseTsinghua (eShayina) lenze indlela yokulalela izingxoxo egumbini elinentambo yokubona, njengaleyo esetshenziswa ukuxhuma ku-inthanethi. Ukudlidliza komsindo kudala umehluko kumfutho womoya, obangela ukudlidliza okuncane kukhebuli yokubona, okulungiswa ngegagasi lokukhanya elidluliselwa ngekhebuli. Ukuhlanekezela okuwumphumela kungahlaziywa ebangeni elikhulu ngokwanele kusetshenziswa i-Mach-Zehnder laser interferometer.
Ngesikhathi sokuhlolwa, kube nokwenzeka ukuqaphela ngokugcwele inkulumo ekhulunyiwe lapho kukhona ucezu oluvulekile lwamamitha amathathu lwekhebuli yokubona (FTTH) egumbini eliphambi kwemodemu. Isilinganiso senziwe ebangeni elingu-1.1 km ukusuka ekugcineni kwentambo ebekwe egumbini elilalele. Ububanzi bokulalela kanye nekhono lokuhlunga ukuphazamiseka kuhlobana nobude bekhebuli egunjini, i.e. Njengoba ubude bekhebula ekamelweni buncipha, ibanga eliphakeme lapho ukulalela kungenzeka khona nalo liyancipha.
Kuboniswa ukuthi ukutholwa nokubuyiselwa kwesignali yomsindo kumanethiwekhi okuxhumana okukhanya kungenziwa ngokufihlakele, kunganakwa into elalele futhi ngaphandle kokuphazamisa imisebenzi yokuxhumana esetshenzisiwe. Ukuze bangene ngendlela engaqondakali esiteshini sokuxhumana, abacwaningi basebenzisa i-wavelength division multiplexer (WDM, Wavelength Division Multiplexer). Ukwehliswa okwengeziwe kwezinga lomsindo wangemuva kufinyelelwa ngokulinganisa izingalo ze-interferometer.
Izinyathelo zokulwisana nokulalela indlebe zihlanganisa ukunciphisa ubude bekhebuli yokubona egumbini nokubeka ikhebula eziteshini zekhebula eziqinile. Ukuze unciphise ukusebenza kahle kokulalela, ungasebenzisa futhi izixhumi ezibonakalayo ze-APC (Angled Physical Connect) esikhundleni sezixhumi eziyisicaba (i-PC) uma uxhuma. Kunconywa ukuthi abakhiqizi bezintambo ezibonakalayo basebenzise izinto ezine-modulus enwebekayo ephezulu, njengensimbi nengilazi, njengezingubo ze-fiber.
Source: opennet.ru