Namhlanje, kunye nokuphucula okuqhubekayo kunye nokuphuculwa kweemodyuli ze-fiber optical, i-PON (i-passive optical fiber network) ibe yindlela ebalulekileyo yokuthwala iinkonzo zenethiwekhi yokufikelela kwi-broadband.I-PON yahlulwe yaba GPONkwayeEPON. I-GPON kunokuthiwa yinguqulelo ephuculweyo ye-EPON.Eli nqaku, i-etu-link, lizisa ukuba uqonde imodyuli yokubona yeGPON.
Okokuqala, iteknoloji ye-GPON iphezulu kune-EPON ngokubhekiselele ekusebenziseni i-bandwidth, iindleko, inkxaso yeenkonzo ezininzi, imisebenzi ye-OAM kunye nezinye iinkalo.I-GPON isebenzisa ikhowudi yokukrazula njengekhowudi yomgca, ukutshintsha kuphela ikhowudi ngaphandle kokunyusa ikhowudi, ngoko akukho kulahleka kwe-bandwidth.Ngokwexabiso lebit enye, ixabiso liphantsi ngesantya esiphezulu seGigabit.Ngenxa yefomu yayo yokupakisha ekhethekileyo, inokuxhasa kakuhle iinkonzo ze-ATM kunye neenkonzo ze-IP.I-OAM ityebile ngolwazi, kubandakanywa ukunikezelwa kogunyaziso lwe-bandwidth, i-dynamic bandwidth allocation (DBA), ukubeka iliso kwikhonkco, ukutshintshwa kokukhusela, ukutshintshiselana okubalulekileyo, kunye nemisebenzi eyahlukeneyo ye-alamu.
Iimfuno zemodyuli ye-GPON yenkqubo ye-optical zihlulwe zibe ngamanqanaba amathathu: A, B, kunye no-C. Izibonakaliso ezibonakalayo zomgangatho ngamnye zihluke.Okwangoku, yahlulwe ikakhulu kwiiklasi b+ kunye no-c+.Uluhlu lwamandla olufumanayo lwecala le-ONU ngokuqhelekileyo malunga ne-1-2dBm ngaphantsi kwecala le-OLT.Umahluko umi ngolu hlobo lulandelayo:
Umsebenzi ophambili weGPON ONU Imodyuli ye-optical kukufumana kunye nokukhupha ukukhanya, okuvezwa yi-laser, ukuguqula isignali yombane emodareyithiweyo ibe ngumqondiso we-optical kwaye uyifake kwinethiwekhi ye-fiber optical ukuze idluliselwe.Ummkeli ufumana ukukhanya, ukhulise ukukhanya okufunyenweyo kwaye uyiguqule kwisignali yombane kwisistim sokulungiswa komqondiso ukufumana ulwazi oluluncedo.Uhlobo lwephakheji luyi-SFP, i-SC interface, izinga lokudluliselwa ngu-1.25g / 2.5g, umgama wokuhambisa inokufikelela kuma-20km.I-wavelength yothumelo yi-1310nm kwaye i-wavelength eyamkelayo yi-1490nm.Umsebenzi wokuxilongwa kwedijithali weDDM uyaxhaswa, kwaye ubushushu bokusebenza kwibakala lezorhwebo (0 °C - 70 °C) kunye nebakala leshishini (-40 °C - +85 °C) likhethwayo.
IGPON OLT Imodyuli ye-optical ihlanganiswe ne-SFP, i-SC interface, i-2.5g / 1.25g yokudluliselwa kwesantya, i-20km umgama wokuhambisa, i-1490nm yokuhambisa i-wavelength, i-1310nm ifumana ubude be-wavelength, kunye nenkxaso ye-DDM yokuxilongwa kwedijithali umsebenzi, okwenza ukuba ifaneleke kwii-terminals ze-optical line.
Oku kungasentla yingcaciso yolwazi lwe-GPON imodyuli yokubona eziswa yi-Shenzhen HDV photoelectric Technology Co., Ltd. Iimveliso zemodyuli eziveliswe yikhava yenkampani. iimodyuli zefiber optical, Iimodyuli ze-Ethernet, iimodyuli ze-fiber optical transceiver, iimodyuli zokufikelela kwifiber optical, Iimodyuli ze-SSFP ezibonakalayo, kwayeI-SFP optical fibers, njl. Ezi mveliso zemodyuli zingentla zinokubonelela ngenkxaso yeemeko ezahlukeneyo zenethiwekhi.Iqela le-R&D elinobuchwephesha kunye nelomeleleyo linokunceda abathengi abanemiba yobugcisa, kwaye iqela leshishini elicingayo nelinobuchule linokunceda abathengi bafumane iinkonzo ezikumgangatho ophezulu ngexesha lokubonisana kwangaphambili kunye nomsebenzi wasemva kokuvelisa.Wamkelekile kuwe Qhagamshelana nathi kulo naluphi na uhlobo lombuzo.