1. ENCIRCLE FLUX 2. WORLDSKILLS
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1. ENCIRCLE FLUX 2. WORLDSKILLS Edmund Tan Senior Manger Republic Polytechnic (School of Engineering) [email protected]
Transcript of 1. ENCIRCLE FLUX 2. WORLDSKILLS
1. ENCIRCLE FLUX 2. WORLDSKILLS
Edmund Tan
Senior Manger
Republic Polytechnic (School of Engineering)
IEC 61280-4-1
• The EF value at 15 um equals the ratio between the amount of light transmitted in that middle part and the total amount of light emitted into the whole core (yellow circle).
Amount of light (From center to radius of core)
Total light in the fibre core EF value =
Ex. EF value at 15um = 0.655
65.5% of light in the area of (15um radius)
Parameter to standardizing the launch condition of the fibre
Ideal EF Target from IEC 61280 for 850nm
How to read the Encircled Flux Graph
Source: Wikipedia
Encircled Flux is a measure of light coupled into the Optical Fibre as a function of distance from the center of the core
50 u
m
0.655
10um
22
0.335
0.919
0.975
Both light source and jumper must meet EF requirement
EF requirement
Why Encircle Flux
• Attenuation measurement variations can occur when two similar light sources or different launch cords are used.
• Insertion Loss/Connector specification getting tigher as network equipment reaches 10 gigabit.
– With loss limits this tight, uncertainty of measurement is key in making a safe pass/fail judgment
• EF is a way of standardizing the launch condition in Fibre
• Measurement variation should be less than ±10 % (on a dB basis)
Launch Condition
VCSEL Light Source
LED Light Source
Ideal launch conditions should occur if the light is distributed throughout 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
Overfilled Launch Condition
• Overfill launch puts too much power into cladding and higher order modes
• Higher order modes and more power are lost at connection
• Higher loss value than actual loss
Underfilled Launch Condition
• Little power in higher order modes in fibre core.
• Minimal power loss at connections
• Lower loss value than actual loss
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.
How does it look inside
Near Field Pattern of 850nm – Non EF Compliance VSCEL light source
Near Field Pattern of EF Compliant LED
Measurements 850nm
Multimode Encircled Flux 850nm Multimode VCSEL 850nm
Measurements 1300nm
Multimode Encircled Flux 1300nm Multimode VCSEL 1300nm
Lab setup for Encircle Flux Testing for MPO Adapter
Measurements
Encircle Flux measurement
EF Compliance LED light source
What does this means
Better and accurate repeatability measurements
Organised by ITE in conjunction with the five Polytechnics; to select winners to represent Singapore at the WorldSkills Competition.
Singapore Finals Thu 10 Jul to Sat 12 Jul 2014
WorldSkills Singapore Objectives
• To promote the image and status of technical/skilled personnel in Singapore.
• To accord recognition to technical talents and skills of our youths.
• To raise the standard of excellence in technical skills
through competition.
• To generate greater public awareness and interest in technical education.
• To select highly-skilled youths to represent Singapore at
WorldSkills Competition.
WorldSkills Singapore 2012
Information Network Cabling
Worldskills International 2013
WORLDSKILLS 43rd WorldSkills Competition
11 to 16 Aug 2015
WorldSkills Singapore 2014
• To select highly-skilled youths to represent Singapore at WorldSkills SaoPaulo 2015 from the 20 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
Singapore’s Performance at WSCAward 40th WSC (2009)
Calgary, Canada 41st WSC (2011)
London, United Kingdom 42nd WSC (2013) Leipzig, Germany
Gold • 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
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)
Information Network Cabling
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.
• 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
Information Network Cabling
• For further information on WorldSkills Singapore National Competition 2014, please contact
Ms Jill Soh 65902325 [email protected]
