N'oge a, site na njikarịcha na nkwalite nke modul fiber optical, PON (network fiber optical fiber network) aghọwo ụzọ dị mkpa isi na-ebu ọrụ netwọk ohere brọdband. E kewara PON ụzọ GPONnaEPON. Enwere ike ịsị GPON bụ ụdị EPON emelitere. Edemede a, etu-njikọ, na-ewetara gị ịghọta modul ngwa anya GPON.
Nke mbụ, teknụzụ GPON dị elu karịa EPON n'ihe gbasara ojiji bandwidth, ọnụ ahịa, nkwado ọtụtụ ọrụ, ọrụ OAM na akụkụ ndị ọzọ. GPON na-eji koodu scrambling dị ka koodu ahịrị, na-agbanwe naanị koodu na-enweghị ịba ụba koodu, ya mere ọ dịghị ụkọ bandwidth. N'ihe gbasara ọnụ ahịa ntakịrị ntakịrị, ọnụ ahịa ahụ dị ala site na ọnụma ọsọ ọsọ Gigabit. N'ihi ụdị nkwakọ ngwaahịa pụrụ iche, ọ nwere ike ịkwado ọrụ ATM na ọrụ IP. OAM bara ụba na ozi, gụnyere oke ikike ikike bandwit, oke bandwidth ike (DBA), nlekota njikọ, mgbanwe nchebe, mgbanwe igodo, na ọrụ mkpu dị iche iche.
A na-ekewa usoro GPON ngwa anya modul chọrọ n'ime ọkwa atọ: A, B, na C. Ihe ngosi anya nke ọkwa ọ bụla dị iche. Ugbu a, a na-ekewa ya na klas b+ na c+. The ike ịnata nso nkeONUakụkụ bụ n'ozuzu banyere 1-2dBm erughị nke nkeOLTakụkụ. Ndịiche dị ka ndị a:
Isi ọrụ nkeGPON ONU ngwa anya modul bụ ịnata ma na-ebunye ọkụ, nke laser na-achọpụta, gbanwee akara ọkụ eletrik agbanwe agbanwe ka ọ bụrụ akara ngosi ma tinye ya na netwọk eriri anya maka nnyefe. Onye nnata na-enweta ìhè ahụ, na-eme ka ìhè a na-enweta dịkwuo elu ma gbanwee ya na mgbaàmà eletriki na usoro maka nhazi mgbaàmà iji nweta ozi bara uru. Ụdị ngwugwu bụ SFP, SC interface, ọnụego nnyefe bụ 1.25g / 2.5g, nnyefe anya. nwere ike iru 20km. The nnyefe wavelength bụ 1310nm na-anata wavelength bụ 1490nm. A na-akwado ọrụ nyocha dijitalụ nke DDM, yana okpomọkụ na-arụ ọrụ nke ọkwa azụmahịa (0 Celsius C - 70 Celsius) na ọkwa mmepụta ihe (-40 °C - + 85 Celsius) bụ nhọrọ.
Ọnụ ego nke GPON OLT A na-ejikọta modul ngwa anya na SFP, interface SC, 2.5g / 1.25g nnyefe ọnụego, 20km nnyefe anya, 1490nm nnyefe wavelength, 1310nm na-anata wavelength, na nkwado maka DDM digital nchoputa ọrụ, na-eme ka ọ dabara maka ngwa anya akara ọnụ.
N'elu bụ nkọwa ihe ọmụma nke GPON ngwa anya modul wetara Shenzhen HDV photoelectric Technology Co., Ltd. Ngwaahịa modul mepụtara site na mkpuchi ụlọ ọrụ. ngwa anya eriri modul, Ethernet modul, ngwa anya eriri transceiver modul, ngwa anya eriri ohere modul, SSFP ngwa anya modul, naSFP ngwa anya eriri, wdg Ngwaahịa modul dị n'elu nwere ike inye nkwado maka ọnọdụ netwọk dị iche iche. Otu ọkachamara na R & D siri ike nwere ike inyere ndị ahịa aka na nsogbu teknụzụ, na otu ndị ahịa na-eche echiche na ndị ọkachamara nwere ike inyere ndị ahịa aka inweta ọrụ dị elu n'oge ndụmọdụ tupu oge na ọrụ mmepụta ihe. Nabata gị kpọtụrụ anyị maka ụdị ajụjụ ọ bụla.