Glossary
Tunable Laser Source
81
In fact, ISO is not an abbreviation—it is intended to signify
uniformity (derived from the Greek
iso
meaning “equal”).
ISO is responsible for many standards including those for
data communications and computing.
ITU
International Telecommunications Union. The ruling body
for telecommunications and the source of many network
standards.
jumper
Fiber-optic cable that has connectors terminated on both
ends. Used to connect two pieces of equipment, modules,
or components.
k
Abbreviation for kilo, which indicates 10
3
units.
LoBi
Low birefringence (fiber)
LD
Laser diode
LED
Light emitting diode
M
Abbreviation for mega, which indicates 10
6
units.
m
Abbreviation for milli, which indicates 10
-3
units.
min
Minute
MFD
Mode field diameter (singlemode fiber)
modal dispersion
Generally used to designate multimode dispersion, which is
pulse broadening due to optical power propagating via
different waveguide modes. Modal dispersion is the main
limitation on the bandwidth of multimode fibers.
mode coupling
The exchange of power among modes.
mode field diameter
The effective diameter of optical energy in a singlemode
fiber. Because the mode field diameter is greater than the
core diameter, mode field diameter frequently replaces core
diameter as a practical parameter.
multiplexing
The process by which two or more signals are transmitted
over a single communications channel.
n
Abbreviation for nano, which indicates 10
-9
units.
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