ETA Fiber Certification Installer WOAC
Questions with 100% Correct Answers
The class designation for lasers that run at low power levels so that prolonged exposure
will not cause eye damage is
Class I
Each chemical you use should be accompanied by a/an
Material Safety Data Sheet (MSDS)
What is the best practice for disposing of fiber optic waste?
Dispose of all fiber optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed?
1977
What is FDDI?
Fiber Distributed Data Interface - connector used to link electronics & fiber transmission
LAN systems.
Bandwidth can be defined as _________________?
amount of information or data it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables?
Bandwidth, Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security,
Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________.
,dielectric, EMI
the four basic components of a fiber optic link are the:
transmitter, receiver, fiber optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is
much _____________.
wide, narrow
A ___________ is the light source used with laser optimized multimode fiber.
VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is?
Light Amplification by Stimulated Emission of Radiation
What light source/wavelength is typically utilized in multimode plastic optical fibers?
Visible (650 nm LED)
What are the multimode operating wavelengths?
850nm, 1300nm
What light sources are used for multimode transmissions?
LED, VCSEL
What are the single mode operating wavelengths?
1310 nm, 1550 nm, 1625 nm
What light source is used for single mode transmissions?
LASER
, What component in a receiver circuit converts optical signals to electrical energy?
Photodiode
Combining two or more wavelengths in a single fiber is an example of?
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber?
850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber?
SM - 8-10 μm; MM - 62.5 μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below?
Buffer (900 μm), Acrylate Coating (250 μm) Cladding (125 μm), Core (8-10 μm, 50 μm, or
62.5 μm)
What does the cladding do in a fiber optic cable? What is it responsible for?
Surrounding the core; provides the refractive index that allow total internal reflection of light
traveling in the core.
What is the mode?
The potential paths for light to move through the fiber optic.
Singlemode fiber allows __________ path/s of light.
single
Multimode fiber allows ____________ path/s of light.
multiple
Questions with 100% Correct Answers
The class designation for lasers that run at low power levels so that prolonged exposure
will not cause eye damage is
Class I
Each chemical you use should be accompanied by a/an
Material Safety Data Sheet (MSDS)
What is the best practice for disposing of fiber optic waste?
Dispose of all fiber optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed?
1977
What is FDDI?
Fiber Distributed Data Interface - connector used to link electronics & fiber transmission
LAN systems.
Bandwidth can be defined as _________________?
amount of information or data it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables?
Bandwidth, Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security,
Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________.
,dielectric, EMI
the four basic components of a fiber optic link are the:
transmitter, receiver, fiber optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is
much _____________.
wide, narrow
A ___________ is the light source used with laser optimized multimode fiber.
VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is?
Light Amplification by Stimulated Emission of Radiation
What light source/wavelength is typically utilized in multimode plastic optical fibers?
Visible (650 nm LED)
What are the multimode operating wavelengths?
850nm, 1300nm
What light sources are used for multimode transmissions?
LED, VCSEL
What are the single mode operating wavelengths?
1310 nm, 1550 nm, 1625 nm
What light source is used for single mode transmissions?
LASER
, What component in a receiver circuit converts optical signals to electrical energy?
Photodiode
Combining two or more wavelengths in a single fiber is an example of?
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber?
850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber?
SM - 8-10 μm; MM - 62.5 μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below?
Buffer (900 μm), Acrylate Coating (250 μm) Cladding (125 μm), Core (8-10 μm, 50 μm, or
62.5 μm)
What does the cladding do in a fiber optic cable? What is it responsible for?
Surrounding the core; provides the refractive index that allow total internal reflection of light
traveling in the core.
What is the mode?
The potential paths for light to move through the fiber optic.
Singlemode fiber allows __________ path/s of light.
single
Multimode fiber allows ____________ path/s of light.
multiple
