Jfot (JDSU Certified Fiber Optic Technician)



Jfot (JDSU Certified Fiber Optic Technician)

Course Outline

Introduction to Fiber Optic Testing


Fiber Handling

• Safety

• Care & Cleaning


Fiber Cleaning Resources

• The importance of cleaning

• Manual fiber cleaners

• Compressed dry air

• Lint-free wipes

• Ferrule swabs

• Isopropyl alcohol

• Anti-static work surfaces

• Inspection microscopes

• Digital inspection probes


Fiber Care

• Technical Specifications

• Proper fiber handling, cleaning, & inspection techniques

• Analyzing endfaces



Fiber Testing Resources

• The need for basic testing

• Visual fault locator (VFL)

• Optical time domain reflectometer (OTDR)

• Optical power meter (OPS)

• Optical light source (OLS)

• Optical continuous wave reflectometer

• Fiber cleaning kit

• Associated connectors and adaptors


Performing Basic Fiber Tests


• Optical insertion loss

• Optical return loss

• Optical receiver sensitivity


Fiber Measurements

• Length of fiber

• Locating fusion splices, mechanical splicing and optical


• Locate Splice Gains

• Bidirectional testing

• Locate Fiber Anomalies-Fiber breaks, End of Fiber,

Micro/Macro Bends

• Measure Insertion Loss Caused By Patch Panels & Fusion



Troubleshooting Fiber Faults

• Basic troubleshooting steps

• The importance of cleaning

• Identifying fibers with the VFL

• Analyzing fiber link with the OTDR (advanced testing)

• Measuring optical insertion loss (OIL)

• Measuring optical return loss (ORL)


Hands-On Workshop


Performing Basic Fiber Tests Using

• VFLs

• Light Source

• Power Meters


Troubleshooting Fiber Faults

• Basic troubleshooting steps

• The importance of cleaning

• Identifying fibers with the VFL

o Search for excessive bends or breaks using a


o Perform end to end loss testing with OPM

and OLS

o Test fiber connectors using OPM and OLS




Mechanical Splicing

• Preparation for Splicing

• Fiber preparation (Fiber to Fiber Splicing)

• Cleaving the Fiber

• Inserting First Fiber into Splice

• Inserting Second Fiber into Splice

• Splice Re-entry

• Securing Fibers in the Splice

• InSpection of the Splice

• Buffered Fiber Preparation (900-μm Tight and Loose



Fusion Splicing

• Introduction

• Assembled Stranded Fiber (ASF) Ribbon

• Speciality Fibers

• Description of the Fusion machine

• Console Panel

• Splicing Ribbon Overview

• Procedures for Splicing

• Correct placement of fiber in splice closure

• Splice Tray

• Splicing Set Up Job Aid

• Heat Shrink Protective Sleeve

  o Splice inspection and tensile strength test

  o Replacement of electrodes and cleaning

    objective lenses

  o ARC setting

  o Summary


Hands-On Fusion Splicing






• Fiber Safety

• Care and Cleaning

• Handheld fiber instruments

• Performing basic fiber tests


Theory and Use of an OTDR

• Single Wavelength Systems

• OTDR Event Definition

• OTDR Trace Information

• Fiber End Location

• Event Dead Zone

• Dynamic Range

• Attenuation Dead Zone

• Acquisition Time

• Pulse Width and how it Affects Dynamic Range


• Launch Cable

• Storing Traces, Naming Traces and Transferring

Traces to a PC


Hands-On Workshop

• Introduction to Training Stations

• Measurements and Results Overview


Training Station # 1 – Acceptance Testing


Fiber Link Loss

• OTDR Setup

• Use of Launch Cables

• Dual Wavelength Testing

• Measure Fiber Length

• Bidirectional Testing

• Measure Total Fiber Link Loss


Training Station # 2 – Troubleshooting


Locating Fiber Anomalies

• Fiber Breaks

• Microbends

• Macrobends

• Splice Gain

• Ghosts

• Bad Splices

• Fusion Splices

• Mechanical Splices

• Bad Patch Panel Connections



JFOT Written Exam