38 ELECTRICALCONTRACTOR | DEC. 14 | WWW.ECMAG.COM
QUIZ BY JIM HAYES
The Language of Fiber: Making Connections
All good things must come to an end, including an optical fiber cable. At that point, it needs to
be spliced or terminated. Fiber splicing and termination has its own language, and that’s what
our quiz is about this month. ANSWERS ARE ON PAGE 103. TO TAKE THE QUIZ IN AN ELECTRONIC FORMAT,
1. A permanent connection between two fibers is
called a _______.
2. A fusion splice is called “fusion” because the
fibers are _______.
A. Welded together in an electrical arc
B. Glued together
C. Joined with index matching gel
D. Aligned in a glass fuse casing
3. If the fibers are crimped in an alignment fixture with index-matching gel between the fibers, we call that a _______ splice.
4. In most fiber optic connectors, the fiber is glued into a
ceramic tube called the connector _______ that also aligns
the fibers for connections.
C. Mating sleeve
5. Ceramic ferrules are made convex on the end for a “PC,” or
A. Positive connection
B. Practical connector
C. Physical contact
D. Precise contact
6. Connectors are called multimode connectors or single-mode connectors, but they are really all the same.
7. Some fiber optic connectors have keys or are called “keyed”
because they _______.
A. Only open matching keyed receptacles
B. Are keyed for transmitters or receivers
C. Can unlock and remove fibers
D. Will not rotate in a mating adapter
8. APC connectors are special PC connectors used for single-mode to reduce reflectance. In APC, “A” stands for _______.
9. MPO is the abbreviation for a multi position optical
connector. How many fibers can an MPO connector
connect at once?
D. All of these
10. The loss of a fiber optic connector is determined by mating
it to another connector, measuring the loss and dividing it in
half since each connector contributes to the loss.
HAYES is a VDV writer, trainer and the president of The Fiber Optic
Association. Find him at www.jimhayes.com.