Geraldine samier

Geraldine Samier

Qualifying MDU FTTH Network:Coping with network challenges to optimize CAPEX and OPEX

JDSU Corporate Company

Communications and Communications Test and Advanced Optical

Employees

4,900

Locations

80+ sales and

R&D sites globally

Global Presence

164 countries

© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 2

Solutions: Solutions: Optical Communications, Commercial Lasers, and Photovoltaic.

Applications: Applications: Network Equipment, Industrial and Consumer Products.

Communications and Commercial Optical Products (CCOP)

Solutions: Solutions: Lab/Field Test and Service Assurance

Applications: Applications: Test, Monitoring and Analysis for Network Equipment and Networks (Telecom, Cable, Wireless, Datacom)

Communications Test and Measurement (CommTest)

Solutions: Solutions: Custom Color, Custom Optics, and Authentication Solutions

Applications: Applications: Currency, Defense, Industrial and Consumer Products

Advanced Optical Technologies (AOT)

• Fiber plant and costly network components becoming damaged

• Lack of fiber experts. Training cost is a significant OPEX expenditure

• Expensive re-rolls for troubleshooting

OPEX and CAPEX

Challenges

• Harsh environment

Challenges in FTTH networks


• Harsh environment• Thousands of connectors, splices• Open networks with different service

providers

Constraints

• Difficulties with installation • Failing to turn customer services

up/Network Failures• Increased MTTR due to difficulties with

fault identification/ demarcation

Impacts

1. Major Causes of Network Failures- Connector Contamination- Connector Contamination- Loss/Reflectance

2. Network Continuity3. Quality of Service / Customer Experience

- Monitoring Systems

Weak points in an FTTH network

Vulnerable points in FTTH network

ONT ONT

ONT ONT

Feeder Distribution Home Wiring

DirtyConnector

MicrobendMisalignment

Ok Weak Weakest


Splitter1

CentralOffice

ODFSplitter

2

ONT ONT

BadSplice

Misalignment

Brokenfiber

Macrobend

DamagedSplitter

DamagedConnector

Cross connection

Major Causes of Optical Network Failures


In a study by NTT-Advanced Technology:1. 98% of installers (blue) and 80% of network owners (red) reported that issues with connector contamination was the greatest cause of network failure

2. Other major failures are coming from splices and bends (high loss and ORL/Reflectance)

Contamination and Signal Performance

11.8µ

15.1µ

10.3µ

Core

Cladding


� Loads of connections/ connectors contaminated or damaged

� Signal performance -> customer dissatisfaction

� Network failures -> dispatch/OPEX/ CAPEX

� Cleaning and pro-active inspection

Constraints

Solutions

Impacts

If CONTAMINATION is present at the Central Office or the HUB, the impact can be exponential and much more problematic.If CONTAMINATION is present anywhere in between the HUB and the premise, signal is affected to that premise.

Hub

Contamination - Exponential Impact


Central Office

Hub

HubEstablish best practices:- Clean and inspectconnectors

Loss/ Reflectance and Network Performance

� Connector contamination/bad splices/ bends

� Signal performance -> customer dissatisfaction � Network failures -> dispatch/OPEX

� Meet industry standards and document measurements

Constraints

Solutions

Impacts

Fiber Parameters - What the Standards Say


ZONE NAME SCRATCHES DEFECTS

A. CORE (0–25µm) None None

B. CLADDING(25–120µm)

No limit <= 3µmNone > 3µm

No limit < 2µm5 from 2–5 µmNone > 5µm

C. ADHESIVE(120–130µm)

No limit No limit

D. CONTACT(130–250µm)

No limit None => 10µm

Business Impact of Standards

� Compliance to standards:– Provides a guarantee of network condition and performance– Enables to build the network for a lifetime of performance

• DON’T create problems you will have to deal with later– Lower maintenance costs / Opex

• Achieve expected ROI

� Documenting measurements:


� Documenting measurements:– Assures customer satisfaction – Protects the supplier




Patching in Customers Correctly

Issue with Customer Id…

OLT

?

Establish best practices:Implement a continuitytest during installation phaseOLT


� Cross connections is a common problem in the field

� Incorrect connections can not be found until ONT is turned-up -> dispatch/OPEX

� A customer who has been patched incorrectly might be brought down-> customer dissatisfaction

� Continuity tests during installation phase is a MUST

Constraints

Solutions

Impacts

Installation PhaseHow to Significantly Lower Maintenance Costs / Opex

How to Lower Maintenance Costs / Opex - Summary

� Ensure tech/installers follow proper procedures

� Establish best practices within your organization


� Drive tech/installers to meet industry standards

� Ask tech/installers to certify their work




What is a Monitoring System

video


Quality of Service – Customer Experience

WDM1490nm

1310nm

Reflectors

1650nm

OLT SplitterONT


Monitoring System Benefits1. Construction: Fiber length and attenuation measurement at different phases of the construction

� Accurate record in network inventory

� Measurements are certified

� Sooner problems are detected, easier is the repair

2. Provisioning: network test before ONT connection / Measurement of network length and budget

� Avoids erroneous dispatches

� Accurate record in network inventory

� Facilitate network maintenance

� Measurements are certified

3. Maintenance: Fault demarcation between ONT failure and network failure / differentiation between operators /Fault location up to the splitter

� Send the right team in the field

� Reduce MTTR that can impact numerous subscribers

• Fiber plant and costly network components becoming damaged

• Lack of fiber experts. Training cost is a significant OPEX expenditure

• Expensive re-rolls for troubleshooting

OPEX and CAPEX

Challenges

• Establish best practices and method & procedures

Challenges in FTTH networks


procedures• Select certifying test tools with automated

test functionality• Implement Monitoring Systems

Solutions

• Do the job right the first time• Future proof your network• Optimize dispatches and lower

maintenance costs

Values

FTTH Council 2012 - Munich


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