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Experiences with WDM PON in SME markets

FttX Summit Europe,

London, UK

April 23-26, 2012

Ger C. Bakker, MSc

CTO & Founder

UNET, The Netherlands

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‣ Introduction

‣ WDM PON overview

‣ Why WDM PON

‣ Case 1: Remote Business Park

‣ Case 2: Surveillance Camera Network

‣ Case 3: Long Distance Access Network

‣ Case 4: Rural Access Network

‣ Wrap up

Agenda

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Introduction to UNET

‣ First FttH Triple Play Service Provider in Netherlands in 2003

‣ Open Access Broadband Service provider in B2B and Wholesale

‣ Fibre access infrastructure operator and owner in business parks

‣ 1000 km long haul leased optical fibre networks

‣ 500 km owned optical fibre access networks

‣ Active L2/L3 network operator

‣ 2011 revenue € 14.4 M, EBITDA >30%

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Success created the problem

‣ Rapid growth confronted UNET with scaling issues

‣ The local optical fiber infrastructure had reached it’s capacity limits and needed to be expanded by blowing new fibre

‣ Geographically-dispersed locations demanded more efficient use of available fibers

‣ Growth of traffic on UNET’s national core network

•From single wave length to CWDM and DWDM

• From GE to 10 GE

‣ Growth of L2 network services

• Q-in-Q, Mac-in Mac, QoS

• MPLS/PBB/PBT discussion

‣ Open Access is attractive for wholesale business, but requires simple business model

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The problem with PtP fibre

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Dedicated Point to Point – secure, symmetrical downstream & upstream

Simplified deployment model – Colorless ONTs, automatic wavelength selection

Service Velocity - tailored to scale for residential and/or business services

Optimized outside plant - no outside plant electronics, single fiber operation

OLT: Optical Line Terminal

ONT: Optical Network Termination

WDM: Wavelength Division Multiplexing

CO WDM

Filter

Wireless Hub, Back Haul

ONT 2

Business - Multi-Tenant Unit - Local Datacenter

ONT

n

SME and Residential

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OLT

Low Loss Passive Filter in outside plant

Service Terminal and Packet Processing

32 wavelengths @ 1Gb/s

WDM POM explained

Up to 60 km

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ONT

ONT

WDM Fiber Access

ADVANTAGES of

P2P & TDM PON

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Secure, Reach, Scalability

No Wavelength Planning &

Simple Engineering

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WDM PON: a disruptive technology?

TDM PON ↑ Simplified CO fiber management ↑ Passive OSP solution ↑ Low power consumption ↑ Subscriber Density ↔Interoperability ↔Security ↓ Shared Bandwidth (DS & US) ↓ Trouble shooting ↓ Redundancy

Point to Point ↑ Future proof architecture ↑ Bit rate & protocol independent ↑ Follows Telco wiring practices ↑ Standards/Mature Technology ↑ Symmetrical Services ↔Subscriber Density ↓ CO fiber management ↓ Fiber availability ↓ High power consumption ↓ MTTR upon cable break

Active Remote

In Building

Outside Cabinet

↑ Symmetrical Services ↑ Standards/Mature Technology ↑ Simple engineering & planning ↔Subscriber Density ↓ Shared bandwidth ↓ Active electronics in OSP ↓ High power consumption ↓ Sub-optimal scalability

WDM Fiber Access

Passive Wavelength Filter

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Case 1: Remote Business Park

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Case 2: Surveillance Camera Network

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Case 3: Long Distance Access Network

20 km

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Case 4: Rural Access Network

4-way

splitter 8-way

splitter

Add/drop configuration

OLT

ONT

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FttB: Technology Comparison & Costs

Solution Technology Pro’s Con’s Relative TCO

Fiber Expansion Jet Net Blow extra mini-

cable in reserved

mini-ducts

‣ Simple ‣ Reliable ‣ Low OPEX

High CAPEX 100%

Traffic Aggregation

L2 Switching Ethernet aggregation

switched in street cabinets

‣ Medium CAPEX ‣ Very Flexible

‣ More Active PoP’s

‣ Complex ‣ High OPEX

35%

Wavelength Multiplexing

WDM PON Passive filter in manhole or street

cabinet

‣ Simple ‣ Reliable

(Passive) ‣ Low CAPEX ‣ Low OPEX

‣ New Technology ‣ Single Vendor

20%

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Wrap up

‣ WDM PON's current cost level makes it ideal for FttO networks (SME)

‣ In FttH WDM PON is more cost effective than PtP, but cannot yet replace existing

TDM PON in existing deployments for highly populated areas

‣ WDM PON is much easier to manage than PtP fibre

‣ WDM PON realizes huge savings on PoP capex and opex

‣ WDM PON in add/drop configuration is an attractive solution for fibre to rural areas

‣ As mass production and further integration will occur in the next few years, this

technology will be the ultimate solution, and in the end replace DSL, cable and TDM

PON