Fusion Splicing

Question 1

State the applications a fusion splice would be used for?

Answer 1

• To join two fibres due to breakage
• To extend cable runs
• To reduce losses. A fusion splice has a much lower loss than two connectorized cables joined through a coupler.
• To attach pigtails

Question 2

Name three different types of In-Service fusion splicers?

Answer 2

• Tri-Tec Fusion Splicer
• Fujikura Fusion Splicer
• Fitel Fusion Splicer

Question 3

What Pre-Use checks should be conducted prior to using a fusion splicer?

Answer 3

• Serviceability
• Calibration
• Functional Checks
• Fusion Set-up
• Oven Set-up

Question 4

Explain the general fusion splicing procedure?

Answer 4

• Fibre preparation
• Fibre cleaving
• Load fibres into splicer
• Course alignment
• Pre fuse fibres
• Fine adjustment
• Main fuse
• Test and inspect fuse
• Protect Splice.

Question 5

State four common fusion splicing problems?

Answer 5

Dark Line
Not Enough Arc
Fibres too far apart
Matchheads
Constriction
Enlargement
Bubble or Inclusion

Question 6

Prior to conducting an arc on optical fibre cable, what accessory must be fitted prior?

Answer 6

Splice protection sleeve

Question 7

What is the maximum attenuation according to BS 50173-1 for a splice?

Answer 7

BS EN 50173-1 states that the maximum attenuation for a splice is 0.3dB.

Question 8

You are using the Tri-Tec, you have completed the following steps, Prepped Fibre, Cleaved Fibre, Mounted Fibre, Coarse Alignment and Cleaning Arc. What are the final steps for conducting the splice?

Answer 8

Fine adjustment
Main Fuse
Test and inspect the fuse
Protect Splice