Community Forums - Reply To: FTTX

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Free Evaluation

May 5, 2016 at 10:06 pm #38919

Spectator

Hi all
I agree with Hamza Ali and Rajguru that there are three basic types of PON as APON, BPON and GPON. The use of ATM-based PON (APON and BPON), the achieved upstream and downstream aggregate bandwidths were in the order of 155 Mbit/s up to 622 Mbit/s. Later, the use of time division multiplexing (TDM) permitted achieving capacities around 1.2 Gbit/s and 2.5 Gbit/s (downstream & upstream) according with the ITU-T G.984 G-PON standard. Advanced high-speed TDM based optical access systems up to 10Gbit/s for downstream and 2.5 upstream (XG-PON1) or 10Gbit/s/ for both downstream and upstream (XG-PON2), according with the ITU-T G.987 G-PON standard, have been developed and some field trials have been reported. Currently, standardized specifications by ITU exist for ATM-based PON (APON and BPON), gigabit-capable PON (GPON) and XG-PON
and Ethernet PON (EPON) and 10G-EPON by IEEE.Further research are going towards Next Generation PON: NGPON1 and NGPON2. Hybrid TDM and WDM PON are latest type of PON recommended by ITU-T.
Hope this is helpful
Regards

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