Topic 5 :Optical Measurement

Define Fiber Optic Testing

• to evaluate the performance of fiber optic components
• to check fiber optic attenuation
• to designers of fiber optic cable plants and networks
• to check fiber optic loss

Choose the correct instrument to test attenuation or loss of fiber, cables and connector

• OTDR
• Fiber power meter
• Fiber optic power meter and source, test kit & OLTS
• Optical spectrum analyser

Refer to the figure, choose the correct name of this equipment

• Visual Cable Tracer

• Optical Fiber Identifier

• Optical Test Parameter

• Fiber Optic Fault Locator

Fiber continuity tester is also called _____________

• Fiber optic measurement
• Fiber optic testing
• Fiber optic continuity measurement
• Fiber optic continuity checker

Name the testing refer to the figure

• Patchcord Test (Single-ended)
• 0 dB reference test
• Cable Plant test (Double-ended)
• Cable reference test

Refer to the figure OTDR display, choose the correct answer for point A and B

• Start Pulse, Ghost Signal
• Mechanical splicing, Fusion Splicing
• Fusion Splicing, Connector
• Back Reflectance, Splicing

The purpose of Visual Tracing is

• finding breaks

• confirm proper polishing

• tracing path

• find fault like scratches

Choose the correct instrument used to check Fault Location

• Optical Spectrum Analyzer

• Optical Lost Test Set

• Power Meter

• OTDR

Define Single Added in Insertion Loss Testing

• Measure two connectors loses

• The middle reference cable must be the shortest posible

• Measure power through launch cable

• The middle reference will be replaced by DUT

Why optical loss test is performed

• to check return loss

• to check fiber breaks

• to check location

• to check absorbtion