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Certified Fiber Optics Final Exam|112 Questions and Answers
Certified Fiber Optics Final Exam|112 Questions and Answers
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Certified Fiber Optics Final Exam|112Questions and Answers
the applications of optical fiber communications have increased at a rapid
rate, since the first commercial instillation of a fiber optic system in the - -
1970's
-The loss of a signal strength is called - -attenuation
-A single binary digit Is called a - -Bit
-An eight bit group is called a - -Bite
-The _______ is used to express gain or loss in a fiber optic system or
component - -Decibel
-1mw of power is ___dbm - -0 dbm
-A loss of 3dbm is a _____ percent loss in power. - -50%
-Power is measured ______in a fiber optic system - -dbm
-Loss is measured in____ in a fiber optic system - -db
-light is electromagnetic energy with a ____wavelength and ____ frequency
than radio waves - -shorter, higher
-The _____ is used to measure light - -measure
-the deflection of light is called_____ - -refraction
-when light passes from one medium to another some of the light energy is
_____back into the first material - -Reflected
-The refractive index profile describes the relation between the indices of
____ and ______.The core of the multimode optical fiber has the highest
refractive index. - -Core, Cladding
-What makes up an optical fiber - -core, cladding, coating
-mode is another name for - -Path
-single mode fiber have a _____core than multimode fibers - -smaller
, -the part of the multimode optical fiber that functions as a mode filter is
the______ - -cladding
-The standard core diameters of multimode fiber are___ and ___um. - -
50nm, 62.5
-_______strength is the ability of a fiber to be stretched or pulled without
breaking - -Tensile
-The Tensile strength of a fiber is_______ when it is bent - -Refracted
-The number of modes in an optical fiber decreases as the ___increases - -
Wavelength
-Bandwidth is and effective indication of the rate at which____ can be sent -
-Intelligence
-Graded index fibers uses numerous concentric layers of glass to
reduce______ - -Modal Dispersion
-The number of modes in an optical fiber ____as the core diameter decreases
- -Decreases
-in accordance with the (ISO) (IEC) 1801 specifications, the___ was designed
for use with OM1 and OM2 fibers - -LED
-The (ISO)(IEC) 1801 specifications for laser optimized multimode optical
fiber types are ___ and ____ - -0M3, OM4
-One of the methods to reduce___ dispersion is to increase the wavelength
of the transmitter - -Modal
-Numerical Aperture is the light ___ ability of a fiber - -Gathering
-Light must enter threw the cone of ______ - -Acceptance
-NA range from about 0.500 for plastic fibers to ____ for multimode
50/125um graded index fibers - -.200
-the rule of thumb for the bend radius of and inside, indoor-outdoor, outside,
and/or drop cable when not subjected to Tensile loading is ___ times the
outside diameter. - -10 times
-Material safety data sheets are ____ when chemicals are used - -Required
-NA mismatch is an___ factor - -Intrinsic
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