1. Fiber To The Home: GPON Overview

2. Technology Glossary
BPON: Broadband PON, expanded version of APON, supports robust video services: ATM based G683
EPON: Ethernet PON, using Ethernet for packet data - standards still unsettled: Ethernet based IEEE 802.3ah
GPON: Gigabit PON using GEM: GPON Encapsulation Method GFP/ATM based G684
WDM PON: One wavelength per subscriber up to 10GigE
FSAN: Full Service Access Network (FTTX)
FTTB/C/Cab/H : Fiber-to-the Business/Curb/Cabinet/Home
RfoG : radiofrequency over glass (instead of using coax).
CATV: Cable Television or Community Access TV
SMATV: satellite Master Antenna Television
OLT: Optical Line Terminal
ONT: Optical Network Terminator
ONU: Optical Network Unit

3. FTTX services - Triple play
Complete Voice Services
Local/Long Distance
Telephony features
Internet based messaging (whatsapp, etc....)
Basic & Advanced Data Services
Broadband data
Data/video convergence
Home / SOHO networking
Basic & Advanced Video Services
Broadcast and premium channels directly
from satellite or aerial (SMATV RFOG overlay)
Pay Per View/Video on Demand(IPTV base)
High Definition TV(IPTV or RFOG overlay)
Web TV

4. Emergent technologies Access
Yesterday: 3-5Mb/s (Internet / 1 SD)
In months: >30Mb/s (Internet + 2HD + PVR)
Competitive Market offering:
MDU
MDU internal distribution
Network using VDSL2
Point-to-point FTTP
Gig E connection
30-100Mb/s
to the
subscribers
Media converter
“Today & Future”
Point-to-point FTTx
Gig E connection
Copper or Coax
15-40Mb/s
to the
subscribers
ADSL
“Yesterday”
3-5 Mb/s
to the
subscribers

5. Different penetration of GPON

6. GPON Typical Topologies: One and Cascaded Splitters
Connector or splice

7. No power required at nodes
Active Ethernet
Switching F1 F2
Ethernet
Switch
P2p or Ethernet over fiber
GPON
PON (Passive)
Optical RFOG
Transmitters
IPTV RF

8. Complete PON Architecture
RFOG optical
transmitter
EDFA
(Erbium Doped
Fiber Amplifier)
(EDFA is not necessary within small plants)
Video
1550 nm
Voice & Data
Voice/Data & Video
OLT
(Optical
Line
Terminal)
Downstream
1490 nm
1490nm/1310nm, 1550nm
Optical
Couplers (WDM)
ONT
(Optical Network
Terminal)
Upstream
1310 nm
1x32 Or
Cascade
Optical
Splitter
1310 nm
1490 nm
Downstream
Upstream
Voice and Data
>100Mbps
1550 nm
Video
>100 Mbps
Bandwidths & Services
Digital TV
(Analog TV)
SATELLITE IF
800 MHz
2350MHz
47 MHz

9. How is a ONT/ONU made? ONT Data Services Tv services
(Optical Network Terminal)
integrating WDM to divide data services from TV services
Typical gpon ONU at customer
WALLFIT customer socket
Data Services
Tv services
Upstream
Downstream
Downstream
1310 nm
1490 nm
1550 nm
Voice and Data
>100Mbps
Voice and Data
>100Mbps
Video
Digital TV
(Analog TV)
SATELLITE IF
800 MHz
2350MHz
47 MHz

10. FTTX challenges FTTX: Analog signals need high power
ORL and reflectances are critical
Consider to dismit analogs
TV overlay at 1550nm
Distributing DTT and Satellite signals with best quality
Releasing band for data services
Short distances
No need for EDFA amplifier! An optical TX serving up to 32 users
Splitters in the field
Well defined network, with 1:16 or 1:32 splitters
Different wavelengths 1490nm (WWDM)
Most common WL used ( nm)