Ezinsukwini zanamuhla, ngokusebenza kahle okuqhubekayo nokuthuthukiswa kwamamojula we-fiber optical, i-PON (i-passive optical fiber network) isiyindlela ebalulekile yokuthwala izinsizakalo zenethiwekhi yokufinyelela kwe-broadband.I-PON ihlukaniswe yaba I-GPONfuthiI-EPON. I-GPON ingashiwo ukuthi iyinguqulo ethuthukisiwe ye-EPON.Lesi sihloko, i-etu-link, ikulethela ekuqondeni imojuli ye-GPON yokubona.
Okokuqala, ubuchwepheshe be-GPON buphakeme kune-EPON mayelana nokusetshenziswa komkhawulokudonsa, izindleko, ukusekelwa kwezinsizakalo eziningi, imisebenzi ye-OAM nezinye izici.I-GPON isebenzisa ikhodi yokuphenya njengekhodi yomugqa, ishintsha kuphela ikhodi ngaphandle kokwandisa ikhodi, ngakho akukho ukulahlekelwa komkhawulokudonsa.Mayelana nezindleko zebhithi eyodwa, izindleko ziphansi ngesilinganiso sesivinini esikhulu se-Gigabit.Ngenxa yefomu layo lokupakisha eliyingqayizivele, ingakwazi ukusekela kahle izinsizakalo ze-ATM nezinsizakalo ze-IP.I-OAM inothe ngolwazi, okuhlanganisa ukwabiwa kokugunyazwa komkhawulokudonsa, ukwabiwa komkhawulokudonsa oguqukayo (i-DBA), ukuqapha isixhumanisi, ukushintsha kokuvikela, ukushintshanisa ukhiye, nemisebenzi ehlukahlukene ye-alamu.
Izidingo zemojula ye-GPON yesistimu ye-optical zihlukaniswe ngamaleveli amathathu: A, B, no-C. Izinkomba ze-optical zezinga ngalinye zihlukile.Njengamanje, ihlukaniswe kakhulu ngamakilasi b+ kanye no-c+.Ibanga lamandla elitholayo lohlangothi lwe-ONU ngokuvamile lingaphansi kuka-1-2dBm kunalolo lohlangothi lwe-OLT.Umehluko umi kanje:
Umsebenzi oyinhloko weI-GPON ONU imojula ye-optical ukwamukela nokukhipha ukukhanya, okutholwa yi-laser, ukuguqula isignali kagesi eshintshiwe ibe isignali yokubona bese iyifaka kunethiwekhi ye-fiber optical ukuze idluliselwe.Umamukeli uthola ukukhanya, akhulise ukukhanya okutholiwe futhi akuguqule kube isignali kagesi ohlelweni lokucubungula isignali ukuze athole ulwazi oluwusizo.Uhlobo lwephakheji yi-SFP, isikhombimsebenzisi se-SC, izinga lokudlulisela liyi-1.25g / 2.5g, ibanga lokudlulisela ingafinyelela ku-20km.I-wavelength yokudlulisa ingu-1310nm kanti i-wavelength eyamukelayo ingu-1490nm.Umsebenzi wokuxilongwa kwedijithali we-DDM uyasekelwa, futhi izinga lokushisa lokusebenza lebanga lezentengiso (0 °C - 70 °C) kanye nebanga lezimboni (-40 °C - +85 °C) liyakhethwa.
Idatha ye-GPON OLT i-optical module ihlanganiswe ne-SFP, SC interface, 2.5g/1.25g izinga lokudlulisela, 20km ibanga lokudlulisela, 1490nm transmission wavelength, 1310nm ithola ubude begagasi, nokusekelwa komsebenzi wokuxilongwa kwedijithali ye-DDM, okwenza ifanelekele amatheminali olayini optical.
Okungenhla yincazelo yolwazi ye-GPON optical module elethwa i-Shenzhen HDV photoelectric Technology Co., Ltd. Imikhiqizo yemojula ekhiqizwe ikhava yenkampani. amamojula we-fiber optical, Amamojula we-Ethernet, amamojula we-fiber optical transceiver, amamojula okufinyelela kwefiber optical, Amamojula we-SSFP optical, futhiImicu ye-Optical SFP, njll. Imikhiqizo yemojula engenhla inganikeza ukwesekwa kwezimo zenethiwekhi ezahlukene.Ithimba le-R&D elichwepheshile neliqinile lingasiza amakhasimende anezinkinga zobuchwepheshe, futhi ithimba lebhizinisi elicabangayo nelichwepheshile lingasiza amakhasimende ukuthi athole amasevisi ekhwalithi ephezulu ngesikhathi sokubonisana kwangaphambilini nomsebenzi wangemuva kokukhiqiza.Siyakwamukela ku Xhumana nathi nganoma yiluphi uhlobo lombuzo.