Hi Ankita,
We have different technologies of PON having different data rate and other parameters, which i like to share :
GPON, or gigabit-capable PON, uses an IP-based protocol and either ATM or GEM (GPON encapsulation method) encoding. Data rates of up to 2.5 Gb/s are specified and it is very flexible in what types of traffic it carries. GPON enables “triple play” (voice-data-video) and is the basis of most planned FTTP applications in the near future. In the diagram above, one merely drops the AM Video at the CO and carries digital video over the downstream digital link.

EPON or Ethernet PON is based on the IEEE standard for Ethernet in the First Mile. It uses packet-based transmission at 1 Gb/s with 10 Gb/s under discussion. EPON is widely deployed in Asia. The system architecture is the same as GPON but data protocols are differenet.

Gpon and EPON are different.

PON System Specification Summary

BPON GPON EPON
Standard ITU-T G.983 ITU-T G.984 IEEE 802.3ah (1 Gb/s),IEEE 802.3av (10Gb/s)
Downstream Bitrate 155, 622 Mb/s,1.2 Gb/s 155, 622 Mb/s, 1.2, 2.5 Gb/s 1.25 Gb/s, 10.3 Gb/s
Upstream Bitrate 155, 622 Mb/s 155, 622 Mb/s, 1.2, 2.5 Gb/s 1.25 Gb/s, 1.25 or 10.3 Gb/s
Downstream Wavelength 1490, 1550 1490 1490, 1550
Upstream Wavelength 1310 1310 1310
Protocol ATM Ethernet over ATM/IP or TDM Ethernet
Video RF at 1550 or IP at 1490 RF at 1550 or IP at 1490 IP Video
Max PON Splits 32 64 16
Power Budget
~13dB (min) to 28dB (max) w/32 split ~13dB (min) to 28dB (max) w/32 split

Coverage <20 km <60 km <20 km

Thanks,