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Project proposal on Advanced Architectures for
next-generation FTTH PONs (towards Convergence
between access and metro networks )

• www.upc.edu www.tsc.upc.edu
  www.tsc.upc.edu/gco
• Address Jordi Girona UPC-ETSETB-D5, 08034
  BARCELONA, Spain
• Tel. [phone], Fax. [phone],
  jprat_at_tsc.upc.edu
• Josep Prat

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FTTH research motivation

• Evolution after G/E-PON ?
• Towards Access-Metro convergence
• Assure the future full usability of
  infrastructure
• Dark fibre available, in limited number
• Fibre exhaust urban areas
• Investment and risk deferring
• unpredicted growth after G/E-PONs
• unpredicted take rates, geographically
  temporally
• Technological alternatives ?
• emerging opto-electronic technologies

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Optical Network Scenarios
users' bandwidth grows by 50 per year
Bit rates
100 Mbit/s x Nusers
Extended PON
Interface number
vs distance
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3 proposals on FTTH ngPON

• SARDANA Single-fiber Advanced Ring Dense Access
  Network Architecture
• Agile-AWG2-PON
• Ultra-dense-PON based on homodyne system
• Intended for the 7FP 1st call Network of the
  Future
• In the framework of the ePhoton/One Network
  of Excellence

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1 SARDANA (Single-fiber Advanced Ring Dense
Access Network Architecture)

• 1000 users
• 100 Mbit/s
• 100 Km
• WDM TDM
• Single-fiber access
• Fully PASSIVE fiber plant
• Feeder ring protection
• Traffic balancing
• Highly cascadable
• HIHGLY SCALABLE

• Enabling technologies
• Remotely pumped amplification
• EDF Raman
• IM/FSK modulation

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2 AWG2-PON topology Burst Switched Access
Network combining WDM and TDM with GBA

• MxNxK users (16,384)
• Scalable WDMA/TDMA
• ONUs and Lasers
• G/DBA 30 throug.
• ring

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3. Ultra-Dense WDM
1. with splitters
user
user
user
user
user
Thousands of wavelengths at medium bit rates
OLT
user
user
user
CO
user
user
user
user
Homodyne detection
user
user

• 2. with MUX splitters

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3 Architectures Summary

• 1- Sardana PON central ring single-fibre
  trees
•        - RN use remotely pumped amplification.
•        - ONUs with RSOA.
• less challenging in terms of components, but more
  in terms of system design (higher losses,
  non-linearity,...).
• 2- Agile-AWG2-PON
•        - OTL with an array of fast tunable lasers
  and a MxM AWG
•        - RNs with 1xN AWG, and splitters.
•        - ONUs with RSOA.
• Geographical DBA, new MAC protocol.
• More challenging.
• 3- Ultra-dense-PON, based on homodyne systems,
  reaching about 1000 wavelengths.
•       - OLT with multi-wavelength sources.  
•       - RN based on splitters and, optionally,
  also on coarse-mux.
•       - ONU based on homodyne receiver,
  using phase-diversity with IQ differential
  post-process.
•  

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Required partnership

• Opto-electronics manufacturers
• MxM MUX/AWG
• Fast tuneable laser
• Low cost tuneable optical filter
• EDFA/SOA manufacturer
• Polarization control/diversity
• Integrated Phase modulator
• MMIC
• FPGA
• for MAC (proposal 2)
• for I/Q post-processing (proposal 3)
• Operator Orange (France Telecom),

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Related recent publications

• 1
• J. Prat, C. Bock, J. A. Lazaro, V. Polo, Next
  Generation Architectures for Optical Access,
  Proc. ECOC 2006 Cannes (France), September 2006,
  Th2.1.3
• J. A. Lázaro, V. Polo, C. Bock, M. Omella, J.
  Prat, Remotely Amplified SARDANA
  Single-fibre-tree Advanced Ring-based Dense
  Access Network Architecture, Proc. ECOC 2006
  Cannes (France), September 2006, We3.P.169
• 2
• C. Bock, J. Prat, S. D. Walker, High-density
  Ring-Tree Advanced Access Topology delivering
  Bandwidth on Demand over a Resilient
  Infrastructure, Proc. ECOC 2006 Cannes (France),
  September 2006, Mo3.5.5
• C. Bock, J. Prat, S.D. Walker, WDM/TDM access
  networks advantages and prospects for the
  future, Proc. NOC 2006 Berlin (Germany), July
  2006, Invited paper, pp.274-280.
• C. Bock, J. Prat, S.D. Walker, High-Density
  Optical Burst Switched Access Network Combining
  WDM and TDM over a Passive Optical
  Infrastructure, Optical Fiber Communications
  Conference, OFC/NFOEC06, Proceedings, OFE4,
  Anaheim, USA, March 2006.
• C. Bock, J. Prat, S. Walker "Hybrid WDM/TDM PON
  using the AWG FSR and featuring Centralized Light
  Generation and Dynamic Bandwidth Allocation" J.
  of Lightwave Technology, vol. 23, no.12, pp.
  3981-3988, December 2005.
• 3
• J-M. Fabrega, J.Prat, New Intradyne Receiver
  with Electronic-Driven Phase and Polarization
  Diversity, Optical Fiber Communications
  Conference, OFC/NFOEC06, Proceedings, JThB45,
  Anaheim, USA, March 2006.
• C. Bock, J. M. Fabrega, J. Prat, Ultra-Dense WDM
  PON based on Homodyne Detection and Local
  Oscillator Reuse for Upstream Transmission,
  Proc. ECOC 2006 Cannes (France), September 2006,
  We3.P.168
• J. M. Fabrega, J. Prat, Homodyne Receiver
  Implementation with Diversity Switching and
  Analogue Processing, European Conference on
  Optical Communications ECOC'06, Cannes, France,
  September 2006, We3.P.100
• All
• J. Prat, P. Chanclou, R. Davey, J.M. Finochietto,
  G. Franzl, A.M.J. Koonen, S. Walker, Long-term
  Evolution of Passive Optical Networks,
  AccessNets Conference, 4-6 September, Athens.
• J. Prat, C. Arellano, V. Polo, J. A. Lazaro,
  Frequency-modulated Source Broadening to Reduce
  Rayleigh Backscattering in Bidirectional
  Centralized Light Source WDM-PON Access
  Networks, Proc. ECOC 2006 Cannes (France),
  September 2006, We4.5.6
• Victor Polo and Josep Prat, J.J. Vegas Olmos,
  Idelfonso Tafur Monroy, A.M.J. Koonen,
  All-optical FSK-WDM to IM-OTDM transmultiplexing
  for access PON networks, accepted for publi. at
  OSA Journal of Optical Networking.

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• More information www.tsc.upc.edu/gco
• Please contact Prof. Josep Prat
• ( jprat_at_tsc.upc.edu , tel. [phone] )