Glossary
Tunable Laser Source
83
f
Abbreviation for femto, which indicates 10
-15
units.
f
Frequency, often also designated by
ν
.
FCC
Federal Communications Commission. A U.S. government
body overseeing and regulating national electrical and radio
communications. The FCC, formed in 1934, also deals with
licences, tariffs, and limitations. The members of the
commission are appointed by the U.S. president.
FIFO
First In First Out
frequency
The number of cycles per second, denoted by hertz (Hz).
G
Abbreviation for giga, which indicates 10
9
units.
Ge
Germanium
GeX
High power germanium
GPIB
General Purpose Interface Bus
hr
Hour
Hz
Hertz. Denotes number of cycles per second.
IEC
International Electrotechnical Commission. A
standardization body at the same level as ISO.
IEE
Institute of Electronic Engineering. It is a professional body
covering all aspects of electronics and electrical
engineering, including software, network, and computer
engineering.
IEEE
Institute of Electrical and Electronics Engineering. It is a
professional body very active, among other things, in many
fiber-optic and opto-electronic related fields.
index matching
material
A material, often a liquid or a cement, whose refractive
index is nearly equal to the core index, used to reduce
Fresnel reflections from a fiber’s endface.
index of refraction
The ratio of the group velocity of light in a vacuum to the
group velocity of light in a given medium.
InGaAs
Indium gallium arsenide
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