Optic Fiber Test Questions And Answers
1 um = ______ - โ โ one millionth of a meter
A 3dB loss in power equates to ___% loss from the original loss - โ โ 50
A coated optical fiber = _____ um - โ โ 250
A typical loose tube cable contains a ______ that is wrapped along the cable with a water swellable yarn
- โ โ Central member
Attenuation limits ____ and dispersion limits _____ - โ โ distance; bandwidth
Encoded into a pattern of light waves, information travels through each optical fiber by a process of
_________ - โ โ Internal reflection
Fiber optical transmission is generally used in the _________ region, where light is invisible to the
human eye - โ โ Infrared
Fiber optics is a communication _______ used to transmit information - โ โ medium
How many fibers per tube? - โ โ 12
How would you determine fiber order hen there is 13 fibers inside the same jacket? - โ โ The color
code is repeated with a black or white dash, depending on cable color
Optical transmission for multimode fibers is defined at... - โ โ 850-1300um
Optical transmission for single mode fiber is defined at... - โ โ 1310-1550um
Single mode and multimode fibers have different _____ sizes - โ โ Core
T/F: The greater the distance, the greater the attenuation and dispersion - โ โ T
The _______ move through the fiber from a given source to a destination, such as a cable box, where it
is then decoded - โ โ Waves
The _________ is different in the core and cladding. The light will reflect inward or refract outward in
the core. - โ โ Index of Refraction (n)
The angle at which the light is trapped is called the _________ - โ โ "Numerical Aperture" or critical
angle
The cladding is made up of pure silica, but does not contain ______, which gives it a different density
than the core - โ โ Germania
