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FTTH Test SolutionsV1.1

Jo TanApplication Engineer

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2 2013 EXFO Inc. All rights reserved.

Table of Contents Overview Construction Service Activiation Troubleshooting Demo

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Overview

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4 2010 EXFO Inc. All rights reserved..


FTTx Flavours

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Typical Network Topology

1310 nm

1490 nm

1550 nm

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New architecture trend: MDUs

Vertical/Medium/High rise MDU

Horizontal/Garden style MDU

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7/647 2010 EXFO Inc. All rights reserved.. 7 2010 EXFO Inc. All rights reserved.

IPTV

RF

Home Passed HomeConnect

Feeder Fiber Distribution Fiber

DropFiber

Demystify Current FTTx Deployment

Testing Need (HP): more passive1) OLTS (end to end IL, ORL) with VFL2) IOLM3) FIP-400 + ConnectorMax

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Construction Phase

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What to look for during the measurement?

LossBudget

Macrobends

IL

Splice andConnector

Link ORL

Connectorcleanliness

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0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Contamination of the connector end face

Poor polishing of the ferrule

Mistakes in attaching labels to the cable

Damage to the optical connector

Damage to ferrule end face

Defective splicing

Macrobend loss from poor routing

Cable Installer Network Owner

The chart above is a summary of a study from NTT-Advanced Technology that pollednetwork owner and cable installers on the sources of network failures

98% of cable installers and 80% of network owners answered Yes to havingcontamination be the root cause of a network failure.

Impact of Contamination

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Some Images from FIPs

No fiber image to be seen very dirty Clean fiber and ferrule

Smeared fiber image needs cleaning Spots of dirt on fiber face

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12/6412 2011 EXFO Inc. All rights reserved.

Connector IssuesDust/dirt residues transfer:

If not cleaned properly:Residues will transfer and may create permanent damage when mating

Patch Panel

After mating:

Before mating:

Did you know ?

Connector A

Connector A

Connector B

Connector B

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13/6413 2010 EXFO Inc. All rights reserved..

Best Practices

What is the first step toany fiber testing?

Cleaning Connector inspection

ICIC

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Time where it matters the most: in the field Automatically provides:

Connector certification against IEC and IPC standards Detailed analysis information

Full report documentation

SAVE TIME

Generated directly from the FTB-1!

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Auto-centering feature No need to seek for the fiber

Automatically centers the image

Automatically focus and capture

SPEED-UP YOURINSPECTION TEST

SEQUENCE BYMINIMUM

50% 1

second

Off-center image Auto center image

HIT THE BULLSEYE WITH EXFO

Total time 7 secounds

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LED StatusIndicator on the

probe PASS FAIL

Pass/Fail status from thepalm of your hand No need to look back to the display in

between the connectors

Spend your time preparing for the nextinspection

LED INDICATOR

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7 inches, tablet-inspired

display. The largestof the industry

Highest magnification level Easy to work with

Minimize eye fatigue

Intuitive GUI7 Outdoor -EnhancedTouchscreendisplay

THE MAX-FIP

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Connector Measurement

EXFO ConnectorMax Pass / Fail analysis software KEY FEATURES AND BENEFITS

Simplify your test routine; Automatic pass/fail analysis on the MAX-700B, FTB-1,FTB-200v2 & FTB-500 and PC (laptop)

Save time; Ultra fast analysis under 4 seconds Capitalise on your investment; Compatible with the FIP-400 series probe

IEC 61300-3-35IPC 8497-1

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Budget Measurement

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Physical - Optical Fibre (OLTS)

IPTV

RF

Budget Loss

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Testing IL and ORL
http://newscenter.verizon.com/press-releases/verizon/2008/verizon-to-expand-its-fios.html

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Testing: Loss and ORL

Connectors are the main contributor to loss in FTTHLoss table

Length(meters)

connectors(4 matings)

1310nm (dB) 1490nm (dB) 1550nm (dB)

Fiber +

connectors

Fiber

alone

Fiber +

connectors

Fiber

alone

Fiber +

connectors

Fiber

alone50 1.40 1.42 0.017 1.41 0.011 1.41 0.010

100 1.40 1.43 0.034 1.42 0.021 1.42 0.019

300 1.40 1.50 0.102 1.46 0.063 1.46 0.057

500 1.40 1.57 0.170 1.51 0.105 1.50 0.095

1000 1.40 1.74 0.340 1.61 0.210 1.59 0.190

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24 2010 EXFO Inc. All rights reserved.. 24 2010 EXFO Inc. All rights reserved.

Construction testing - IL

Typical splitter loss table

GPON Specifications Loss Budget - Link Attenuation and ORL

ORL (dB) Attenuation (dB)

Class A Class B Class B+ Class CITU-T Rec.Min Max Min Max Min Max Min Max Min Max

GPON >32 5 20 10 25 13 28 15 30 G.984.2

Split ratio 1:2 1:4 1:8 1:16 1:32 1:64Loss (dB) 3.3 6.6 9.9 13.2 16.5 19.8

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ORL vs. Video Feed

Why should ORL be reduced to a minimum?

Strong fluctuations in laser output power; Distortions in analog video signals (multipath

interference (MPI));

Higher bit-per-error rate (BER) in digital systems;

Potential permanent damage to the laser.

Important: Measure ORL in thesame direction as thetransmission of the 1550 nmvideo signal.

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FTTH Construction Testing Methods

Fully Automated OLTS with bi-directional IL + ORL functionFOT-930 MaxTester HandheldFTB-3930 MultiTest Module

FOT-930 FTB-3930

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Fully Automated OLTS with bi-directional IL + ORL function

Testing drop fibers individually

IPTV

RF

Technique:

One technician stays at the FDH,while another goes to theterminal with a second OLTS.

FTTH Construction Testing Methods

10sec

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Fiber Categorization

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FTTH Construction Testing MethodsTotal Link Loss & Reflectance OTDR

Testing from the optical network terminal (ONT) provides an OTDR tracethat is easier to interpret.

Chosen 1625 for many reasons 1) single wavelength time saving !! 2)Future troubleshooting lot easier (benchmarking), 3) in and out servicetest possible

ONT

OLT

F1

F2FTB-200

No transmission

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Reflectometry Theory

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No need for long speech

Do you know what these results mean ?

How many of people could setup and interpret these results ? How long for a new optical technician to learn OTDR language ?

How many mistakes are made in settings and interpretation ?

How to fix?

How much does it cost?

OTDR

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How does an OTDR Work?Pulse versus resolution and dynamic range

Short Pulse : more resolution but less energy

Long Pulse width: more energy but less resolution

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10 us pulse

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20 us pulse

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Short pulses will give a better resolution but less dynamic range:

OTDR specifications & limitations- Pulse width vs. Dead zones and Dynamic range

Long pulses will give a better dynamic range but less resolution:

Two connectors 3 meters apart End of link (patch panel)

Connectorsare

measuredfor distanceand markedas separate

events

Connectorsare

merged and

identified asone event

End of fiber is not reached dueto low power of short pulses

End of fiber is reached and locatedwhen using a larger pulse

5ns pulse

30ns pulse

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Macrobends

Normal OTDR trace (tested at 1310 nm only)

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Physical - Optical Fibre (OTDR)

1625 nm

1310 nm

1550 nm

1310 nm: normal OTDR trace

1550 nm: huge event loss (Macro bending)

1625 nm: Use on live Fibre network

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Macrobends

Using a Visual Fault Locator (VFL) to Locate Macrobends

Dont forget:

1. Maximum distance reach (straight fiber) is approximately 5 km2. Through a 1 x 4 splitter = 4 times weaker3. Through a 1 x 8 splitter = 8 times weaker4. Through a 1 x 4 and 1 x 8 splitter = 32 times weaker

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What if we had amultipulsewidth OTDR with

smart event recognition?

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INTELLIGENT OPTICAL LINK MAPPER

The One and Only

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No need for long speech

Do you know what these results mean ?

How many of people could setup and interpret these results ?

How long for a new optical technician to learn iOLM language ?

How many mistakes are made in references, settings and interpretation ?

How to fix?

How much does it cost?

iOLM

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iOLM- Next Gen OTDRs

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How Does iOLM Work?

In thebackground

What wesee!

Distance (m)

P o w e r

( d B )

StartStart

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iOLM

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Competitors

Compectitor = Linear View

over 5 years!!!!

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Sxx is only a linear viewSxx is not intelligent (it uses parameters entered by the user)Sxx is not multi-pulseSxx does not have complete and detailed diagnosisSxx does not provide full fiber characterization (fixed pulsewidth recipe)Sxx is nothing close to our iOLM!!!

Do these icons really help technicians ?Did they find all the faults ?Was the OTDR set with the righttest parameters ?

Only 1 in the market!!!

Competitors

A O i l T I

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Access Optical Test Instruments

OLTSFOT-930 MaxTester

loss/ORL/distance/connector probe

Compact OTDRs AXS-110 Access OTDR

PON Power meter PPM-350c

Fiber inspectionprobe

Modular OTDRs & OLTS

FTB-200 & FTB-1 Compact Platform,including connector probe

7000 E Series & 730

OR

MAX-700B

PON Optimized!

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Service Activation Phase

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1.Power Level Assessment2.Service Activation Reporting

Service activation

S i A i i
http://newscenter.verizon.com/press-releases/verizon/2008/verizon-to-expand-its-fios.html

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Testing requirements:

Pass Through for Burst measurementVery high speed detector Thresholds for quick power assessment

FTTH Service-Activation

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Burst Mode Example

S i A i i PON d

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Service Activation: PON data storage

OLT ID:Corresponds to the OLT number andname or C.O.

ONT ID:Corresponds to the ONT number from0 to 128

Loc ID:Corresponds to the test location (i.e.

FDH, FDT, ONT, etc)

PON adapted customizable storage

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Maintenance andTroubleshooting Phase

Trouble Shooting

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1.Most common troubleshooting methods2.Power assessment3.OTDR Live testing

Trouble Shooting

FTTH Live PON Troubleshooting (In-Service):

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No communication between OLT and ONT

PPM-350 to verify optical signals.OTDR to localize break.

Increased BER / slow data rateIf a signal level is out of the transmission window (above or under), BERmay increase.

The PPM-350 is the best tool to monitor each signal level.OTDRs can be used to localize fault.

MacrobendingsA VFL can be used to find and correct macrobends in splice trays.OTDRs can be used to detect and localize problem.

Bad ConnectorsA fiber probe can be used to find and clean dirty connectors.

g ( )Typical Problems and Test Solutions

IPTV

RF

Distribution (F2) &Drop fibers

FTTH Live PON Troubleshooting (In-Service)

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Connector inspection at DROP and Premises

LIVE FIBER AT THE DROP LOCATIONAVOID USING FIBER SCOPES,

USING A FIBER INSPECTION PROBE ISHIGLY RECOMMENDED.

FTTH Live PON Troubleshooting (In-Service)

Troubleshooting a live fiber with SM Live port

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Troubleshooting a live fiber with SM Live port

Designed for construction & troubleshooting: Filtered port option

Test active networks; Integrated filter blocks the incoming signalsMaintain a high-level of QoS with no disruption on the network ;

Out-of-band 1625/1650 nm test wavelengthTesting through splitters

FIBER FINDERM i f t

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FIBER FINDERMain features

Main Features

Ability to pinpoint a live fiber among other livefiber

Indicates whether the fiber is live or not

Enables to pinpoint a particular dark or live fiber. Gives traffic direction Estimates the power within the fiber (if any)

Constant 1dB loss,services not affected

WHERE IS MY FIBER?TROUBLESHOOTING

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WHERE IS MY FIBER?TROUBLESHOOTING

FiberFinder TM

Eliminate Guesswork: Using a low frequency modulation over the traffic live fibers

can be pinpointed

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EXFO Optical Product Overview


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OLTSFOT-930 MaxTester

loss/ORL/distance/connector probe

Compact OTDRs AXS-110 Access OTDR

PON Power meter PPM-350c

Fiber inspectionprobe

Modular OTDRs & OLTS

FTB-200 & FTB-1 Compact Platform,including connector probe

7000 E Series & 730

OR

PON Optimized!

FIBER FINDER

MAX-700B

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DEMO

Test Items

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Test Items

1) FIP-400 + ConnectorMax

ICIC

4) FastReport (Documantation)

2) OLTS (Automatic measurement IL / ORL)3) OTDR and iOLM

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ThanksYou

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