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8/13/2019 2.9 Encircle Flux
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Ideal EF Target from IEC 61280
for 850nm
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How to read the Encircled Flux Graph
Source: Wikipedia
Encircled Flux is a measure of light coupled into the OpticalFibre as a function of distance from the center of the core
5 0 u m
0.655
10um
22
0.335
0.919
0.975
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Both light source and jumper must meet EF requirement
EF requirement
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Launch Condition
VCSEL Light Source
LED Light Source
Ideal launch conditions should occur if the light is distributedthroughout the whole fiber core
Test results in higher attenuation than actual (Overfill)
Test results in lower attenuation than actual (Underfill or restrictive)
EF Launch Condition
at the core
Cladding
Core
Core
Core
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Overfilled Launch Condition
• Overfill launch puts too much power into claddingand higher order modes
• Higher order modes and more power are lost at
connection
• Higher loss value than actual loss
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Underfilled Launch Condition
• Little power in higher order modes in fibre core.
• Minimal power loss at connections
• Lower loss value than actual loss
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Encircle Flux Launch Condition
• Just the right amount of light in the higher
order modes and evenly distribution of light in
fiber core.
• An accurate loss value.
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How does it look inside
Near Field Pattern of 850nm – Non
EF Compliance VSCEL light source
Near Field Pattern of EF
Compliant LED
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Measurements 850nm
Multimode Encircled Flux 850nm Multimode VCSEL 850nm
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Measurements 1300nm
Multimode Encircled Flux 1300nm Multimode VCSEL 1300nm
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Lab setup for Encircle Flux Testing
for MPO Adapter
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Measurements
Encircle Flux measurement
EF Compliance LED light source
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What does this means
Better and accurate
repeatability measurements
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Organised by ITE inconjunction with the fivePolytechnics; to selectwinners to representSingapore at the WorldSkillsCompetition.
Singapore Finals
Thu 10 Jul to Sat 12 Jul 2014
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WorldSkills Singapore Objectives
• To promote the image and status of technical/skilledpersonnel in Singapore.
• To accord recognition to technical talents and skills of ouryouths.
• To raise the standard of excellence in technical skillsthrough competition.
• To generate greater public awareness and interest in
technical education.
• To select highly-skilled youths to represent Singapore atWorldSkills Competition.
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WorldSkills Singapore 2012
Information Network
Cabling
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Worldskills International 2013
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WORLDSKILLS43rd WorldSkills Competition
11 to 16 Aug 2015
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WorldSkills Singapore 2014
• To select highly-skilled youths to represent
Singapore at WorldSkills SaoPaulo 2015 from the20 skill areas:
1 Aircraft Maintenance 11 Industrial Control
2 Beauty Therapy 12 Information Network Cabling
3 CNC Milling 13 IT Network Systems Administration
4 CNC Turning 14 IT Software Solutions for Business
5 Cooking 15 Mechanical Engineering Design-CAD
6 Electrical Installations 16 Mechatronics
7 Electronics 17 Mobile Robotics
8 Graphic Design Technology 18 Restaurant Service
9 Hairdressing 19 Visual Merchandising
10 Health and Social Care 20 Web Design
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Singapore’s Performance at WSC
Award 40th WSC (2009)
Calgary, Canada
41st WSC (2011)
London, United Kingdom
42nd WSC (2013)
Leipzig, GermanyGold • Caring
• Graphic Design Technology
• IT-PC & Network Support
• Beauty Therapy
• Caring
• IT Software Solutions for Business
• IT Network Systems
Administration
• Beauty Therapy
• Health & Social Care (Previously
Caring)
• IT Network Systems
Administration
Silver - • Mechanical Engineering Design-
CAD
• Information Network Cabling
• IT Software Solutions for Business
Bronze • Mobile Robotics • Information Network Cabling
• Visual Merchandising
-
Medallion for
Excellence
(Previously
Diploma)
• Beauty Therapy
• CNC Milling
• Electronics
• IT-Software Applications
• Mechanical Engineering Design-
CAD• Mechatronics
• Restaurant Service
• Web Design
• CNC Milling
• Graphic Design Technology
• Industrial Control
• Ladies'/Men's Hairdressing
• Mobile Robotics
• Restaurant Service• Web Design
• CNC Milling
• CNC Turning
• Cooking
• Electrical Installations
• Graphic Design Technology
• Hairdressing• Mechanical Engineering Design-
CAD
• Mobile Robotics
• Restaurant Service
Medal Tally 11th 11th 9th
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Information Network Cabling
Scope of Competition
• Install and test a campus distribution cabling setup
involving UTP, F/UTP, multi-pair and fiber optic cables.
• Plan, install and test a multimedia cabling project from an
outdoor distribution point to indoor multimedia ports.
• Install a fiber distribution enclosure.
• Perform cable management, administration and labelling.
WorldSkills Singapore 2014 Finals - 10 Jul to 12 Jul 2014 at ITE
College Central (Ang Mo Kio)
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Information Network Cabling
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Information Network Cabling
• You can play a part in the competition:
- Be a member of the Technical Working
Group as judges and expert.
- Sponsor the competition.
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• Set standards and specifications for competition projects to
WorldSkills Competition (WSC) standards;
• Design and develop competition projects;
• Establish marking criteria and judging procedure modelled
on WSC system;
• Establish rules of competition; and
• Organise, judge and mark competition projects.
Roles and Responsibilities
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Information Network Cabling
• For further information on WorldSkills
Singapore National Competition 2014,
please contact
Ms Jill Soh
65902325
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End of [email protected]