CERTIFIED FIBER OPTICS FINAL EXAM
QUESTIONS WITH COMPLETE
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 - answer-1970's
The loss of a signal strength is called - answer-attenuation
A single binary digit is called a - answer-bit
An eight bit group is called a - answer-bite
The _______ is used to express gain or loss in a fiber optic system or component -
answer-decibel
1mw of power is ___dbm - answer-0 dbm
A loss of 3dbm is a _____ percent loss in power. - answer-50%
Power is measured ______in a fiber optic system - answer-dbm
Loss is measured in____ in a fiber optic system - answer-db
Light is electromagnetic energy with a ____wavelength and ____ frequency than radio
waves - answer-shorter, higher
The _____ is used to measure light - answer-measure
The deflection of light is called_____ - answer-refraction
When light passes from one medium to another some of the light energy is _____back
into the first material - answer-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. -
answer-core, cladding
What makes up an optical fiber - answer-core, cladding, coating
Mode is another name for - answer-path
Single mode fiber have a _____core than multimode fibers - answer-smaller
, The part of the multimode optical fiber that functions as a mode filter is the______ -
answer-cladding
The standard core diameters of multimode fiber are___ and ___um. - answer-50nm,
62.5
_______strength is the ability of a fiber to be stretched or pulled without breaking -
answer-tensile
The tensile strength of a fiber is_______ when it is bent - answer-refracted
The number of modes in an optical fiber decreases as the ___increases - answer-
wavelength
Bandwidth is and effective indication of the rate at which____ can be sent - answer-
intelligence
Graded index fibers uses numerous concentric layers of glass to reduce______ -
answer-modal dispersion
The number of modes in an optical fiber ____as the core diameter decreases - answer-
decreases
In accordance with the (iso) (iec) 1801 specifications, the___ was designed for use with
om1 and om2 fibers - answer-led
The (iso)(iec) 1801 specifications for laser optimized multimode optical fiber types are
___ and ____ - answer-0m3, om4
One of the methods to reduce___ dispersion is to increase the wavelength of the
transmitter - answer-modal
Numerical aperture is the light ___ ability of a fiber - answer-gathering
Light must enter threw the cone of ______ - answer-acceptance
Na range from about 0.500 for plastic fibers to ____ for multimode 50/125um graded
index fibers - answer-.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. - answer-
10 times
Material safety data sheets are ____ when chemicals are used - answer-required
QUESTIONS WITH COMPLETE
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 - answer-1970's
The loss of a signal strength is called - answer-attenuation
A single binary digit is called a - answer-bit
An eight bit group is called a - answer-bite
The _______ is used to express gain or loss in a fiber optic system or component -
answer-decibel
1mw of power is ___dbm - answer-0 dbm
A loss of 3dbm is a _____ percent loss in power. - answer-50%
Power is measured ______in a fiber optic system - answer-dbm
Loss is measured in____ in a fiber optic system - answer-db
Light is electromagnetic energy with a ____wavelength and ____ frequency than radio
waves - answer-shorter, higher
The _____ is used to measure light - answer-measure
The deflection of light is called_____ - answer-refraction
When light passes from one medium to another some of the light energy is _____back
into the first material - answer-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. -
answer-core, cladding
What makes up an optical fiber - answer-core, cladding, coating
Mode is another name for - answer-path
Single mode fiber have a _____core than multimode fibers - answer-smaller
, The part of the multimode optical fiber that functions as a mode filter is the______ -
answer-cladding
The standard core diameters of multimode fiber are___ and ___um. - answer-50nm,
62.5
_______strength is the ability of a fiber to be stretched or pulled without breaking -
answer-tensile
The tensile strength of a fiber is_______ when it is bent - answer-refracted
The number of modes in an optical fiber decreases as the ___increases - answer-
wavelength
Bandwidth is and effective indication of the rate at which____ can be sent - answer-
intelligence
Graded index fibers uses numerous concentric layers of glass to reduce______ -
answer-modal dispersion
The number of modes in an optical fiber ____as the core diameter decreases - answer-
decreases
In accordance with the (iso) (iec) 1801 specifications, the___ was designed for use with
om1 and om2 fibers - answer-led
The (iso)(iec) 1801 specifications for laser optimized multimode optical fiber types are
___ and ____ - answer-0m3, om4
One of the methods to reduce___ dispersion is to increase the wavelength of the
transmitter - answer-modal
Numerical aperture is the light ___ ability of a fiber - answer-gathering
Light must enter threw the cone of ______ - answer-acceptance
Na range from about 0.500 for plastic fibers to ____ for multimode 50/125um graded
index fibers - answer-.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. - answer-
10 times
Material safety data sheets are ____ when chemicals are used - answer-required
