Fiber optic final Exam Questions Correct
Answers Current Update (A Pass)
What is "Fiber Optics"? - Answers -Transmitting communication signals over hair thin
strands of glass or plastic.
Multimode Fiber (MM) - Answers -Large core fiber used for slower premises (indoor)
networks. Operates in wavelengths 850 nm and 1300 nm. Can send multiple modes at
once.
Singlemode Fiber (SM) - Answers -Small core fiber used for everything else, higher
bandwidth, lower attenuation. Operates on wavelengths 1310 nm and 1550 nm. Can
only send one mode at once.
Wavelength is the? - Answers -measure of the "color" of the light. Visible light is around
500-600 nm.
T or F
Fiber is Metric - Answers -True
T or F
Fiber size in microns - Answers -True
FTTH - Answers -Fiber to the home
FTTC/N - Answers -Fiber to the Curb or Node
PON - Answers -Passive optical network
ONT - Answers -Optical network terminal, provide voice, data and video feed to the
home.
DAS - Answers -Distributed antenna systems
Lower power outputs than lasers - Answers -LED
Ideal for long distance high speed links, used for singlemode - Answers -Fabry-Perot
laser
VCSEL - Answers -Vertical cavity surface emitting laser
Wavelength
silicon detectors - Answers -650 to 850 nm
, Wavelength
InGaAs - Answers -1310 to 1550 nm, indium gallium arsenide
APD - Answers -avalanche Photodiode, significant gain compares to Silicon and
InGaAs
What is Fiber? - Answers -Transmits the signal as light
Cables - Answers -Protects the fibers in the application enviroment
What are Connecters - Answers -joins fibers or connect to active devices
Splices - Answers -Join two fibers permanently
T or F
Light does not travel in the core - Answers -False
Light is trapped inside the core by the... - Answers -optical cladding
Protects the fiber from moisture and damage - Answers -Buffer or primary coating
The core and cladding are made of .... - Answers -Silica glass
Light bends when index of _____________ changes - Answers -refraction
numerical aperture - Answers -angles that light is transmitted in the fiber
Most fiber is ___________ microns in cladding diameter. - Answers -125
POF is mostly _____ mm with a thin cladding. - Answers -1
T or F
Mate dissimilar fibers for little to no loss? - Answers -False
Mating dissimilar fibers will cause great loss.
HCS/PCS is _______ microns with a ________ core. - Answers -250, 200
OM1 - Answers -62.5/125, FDDI Grade
OM2 - Answers -50/125
OM3 - Answers -50/125, Laser Optimized (2000 MHz-km) Mostly used today.
OM4 - Answers -50/125, Laser Optimized (3500 MHz-km)
OM5 - Answers -50/125, Wavelength Extended 850-950 nm for WDM.
Answers Current Update (A Pass)
What is "Fiber Optics"? - Answers -Transmitting communication signals over hair thin
strands of glass or plastic.
Multimode Fiber (MM) - Answers -Large core fiber used for slower premises (indoor)
networks. Operates in wavelengths 850 nm and 1300 nm. Can send multiple modes at
once.
Singlemode Fiber (SM) - Answers -Small core fiber used for everything else, higher
bandwidth, lower attenuation. Operates on wavelengths 1310 nm and 1550 nm. Can
only send one mode at once.
Wavelength is the? - Answers -measure of the "color" of the light. Visible light is around
500-600 nm.
T or F
Fiber is Metric - Answers -True
T or F
Fiber size in microns - Answers -True
FTTH - Answers -Fiber to the home
FTTC/N - Answers -Fiber to the Curb or Node
PON - Answers -Passive optical network
ONT - Answers -Optical network terminal, provide voice, data and video feed to the
home.
DAS - Answers -Distributed antenna systems
Lower power outputs than lasers - Answers -LED
Ideal for long distance high speed links, used for singlemode - Answers -Fabry-Perot
laser
VCSEL - Answers -Vertical cavity surface emitting laser
Wavelength
silicon detectors - Answers -650 to 850 nm
, Wavelength
InGaAs - Answers -1310 to 1550 nm, indium gallium arsenide
APD - Answers -avalanche Photodiode, significant gain compares to Silicon and
InGaAs
What is Fiber? - Answers -Transmits the signal as light
Cables - Answers -Protects the fibers in the application enviroment
What are Connecters - Answers -joins fibers or connect to active devices
Splices - Answers -Join two fibers permanently
T or F
Light does not travel in the core - Answers -False
Light is trapped inside the core by the... - Answers -optical cladding
Protects the fiber from moisture and damage - Answers -Buffer or primary coating
The core and cladding are made of .... - Answers -Silica glass
Light bends when index of _____________ changes - Answers -refraction
numerical aperture - Answers -angles that light is transmitted in the fiber
Most fiber is ___________ microns in cladding diameter. - Answers -125
POF is mostly _____ mm with a thin cladding. - Answers -1
T or F
Mate dissimilar fibers for little to no loss? - Answers -False
Mating dissimilar fibers will cause great loss.
HCS/PCS is _______ microns with a ________ core. - Answers -250, 200
OM1 - Answers -62.5/125, FDDI Grade
OM2 - Answers -50/125
OM3 - Answers -50/125, Laser Optimized (2000 MHz-km) Mostly used today.
OM4 - Answers -50/125, Laser Optimized (3500 MHz-km)
OM5 - Answers -50/125, Wavelength Extended 850-950 nm for WDM.
