Geraldine samier
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Geraldine Samier
Qualifying MDU FTTH Network:Coping with network challenges to optimize CAPEX and OPEX
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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)
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• 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
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 3
• 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
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1. Major Causes of Network Failures- Connector Contamination- Connector Contamination- Loss/Reflectance
2. Network Continuity3. Quality of Service / Customer Experience
- Monitoring Systems
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Weak points in an FTTH network
Vulnerable points in FTTH network
ONT ONT
ONT ONT
Feeder Distribution Home Wiring
DirtyConnector
MicrobendMisalignment
Ok Weak Weakest
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 5
Splitter1
CentralOffice
ODFSplitter
2
ONT ONT
BadSplice
Misalignment
Brokenfiber
Macrobend
DamagedSplitter
DamagedConnector
Cross connection
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Major Causes of Optical Network Failures
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 6
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)
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Contamination and Signal Performance
11.8µ
15.1µ
10.3µ
Core
Cladding
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 7
� Loads of connections/ connectors contaminated or damaged
� Signal performance -> customer dissatisfaction
� Network failures -> dispatch/OPEX/ CAPEX
� Cleaning and pro-active inspection
Constraints
Solutions
Impacts
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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
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 8
Central Office
Hub
HubEstablish best practices:- Clean and inspectconnectors
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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
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 9
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
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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:
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 10
� Documenting measurements:– Assures customer satisfaction – Protects the supplier
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1. Major Causes of Network Failures- Connector Contamination- Connector Contamination- Loss/Reflectance
2. Network Continuity3. Quality of Service / Customer Experience
- Monitoring Systems
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Patching in Customers Correctly
Issue with Customer Id…
OLT
?
Establish best practices:Implement a continuitytest during installation phaseOLT
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 12
� 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
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Installation PhaseHow to Significantly Lower Maintenance Costs / Opex
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How to Lower Maintenance Costs / Opex - Summary
� Ensure tech/installers follow proper procedures
� Establish best practices within your organization
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 14
� Drive tech/installers to meet industry standards
� Ask tech/installers to certify their work
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1. Major Causes of Network Failures- Connector Contamination- Connector Contamination- Loss/Reflectance
2. Network Continuity3. Quality of Service / Customer Experience
- Monitoring Systems
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What is a Monitoring System
video
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 16
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Quality of Service – Customer Experience
WDM1490nm
1310nm
Reflectors
1650nm
OLT SplitterONT
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 17
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
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• 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
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 18
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
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FTTH Council 2012 - Munich
© 2011 JDS Uniphase Corporation | JDSU CONFIDENTIAL AND PROPRIETARY INFORMATION 19
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