ETA FIBER CERTIFICATION INSTALLER WOAC
QUESTIONS AND VERIFIED ANSWERS
The class designation for lasers that run at low power levels so that prolonged exposure
will not cause eye damage is - Answers - Class I
Each chemical you use should be accompanied by a/an - Answers - Material Safety
Data Sheet (MSDS)
What is the best practice for disposing of fiber optic waste? - Answers - Dispose of all
fiber optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed? -
Answers - 1977
What is FDDI? - Answers - Fiber Distributed Data Interface - connector used to link
electronics & fiber transmission LAN systems.
Bandwidth can be defined as _________________? - Answers - amount of information
or data it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables? - Answers -
Bandwidth, Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security,
Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________. - Answers - dielectric, EMI
the four basic components of a fiber optic link are the: - Answers - transmitter, receiver,
fiber optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is
much _____________. - Answers - wide, narrow
A ___________ is the light source used with laser optimized multimode fiber. - Answers
- VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is? - Answers - Light Amplification by Stimulated Emission of
Radiation
, What light source/wavelength is typically utilized in multimode plastic optical fibers? -
Answers - Visible (650 nm LED)
What are the multimode operating wavelengths? - Answers - 850nm, 1300nm
What light sources are used for multimode transmissions? - Answers - LED, VCSEL
What are the single mode operating wavelengths? - Answers - 1310 nm, 1550 nm, 1625
nm
What light source is used for single mode transmissions? - Answers - LASER
What component in a receiver circuit converts optical signals to electrical energy? -
Answers - Photodiode
Combining two or more wavelengths in a single fiber is an example of? - Answers -
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber? -
Answers - 850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber? - Answers - SM - 8-10 μm; MM
- 62.5 μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below? - Answers - 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? - Answers -
Surrounding the core; provides the refractive index that allow total internal reflection of
light traveling in the core.
What is the mode? - Answers - The potential paths for light to move through the fiber
optic.
Singlemode fiber allows __________ path/s of light. - Answers - single
Multimode fiber allows ____________ path/s of light. - Answers - multiple
_______________ is when a light ray bounces off the interface between two materials. -
Answers - Reflection
When a light ray bends when changing speed from one material to another it is called
_____________. - Answers - refraction
What is the lowest achievable index of refraction? - Answers - 1.0 (Vacuum)
QUESTIONS AND VERIFIED ANSWERS
The class designation for lasers that run at low power levels so that prolonged exposure
will not cause eye damage is - Answers - Class I
Each chemical you use should be accompanied by a/an - Answers - Material Safety
Data Sheet (MSDS)
What is the best practice for disposing of fiber optic waste? - Answers - Dispose of all
fiber optic waste in debris, sealable containers provided.
What year was the first North American fiber optic telephone system installed? -
Answers - 1977
What is FDDI? - Answers - Fiber Distributed Data Interface - connector used to link
electronics & fiber transmission LAN systems.
Bandwidth can be defined as _________________? - Answers - amount of information
or data it can carry in a given amount of time.
List some advantages of optical fiber cables over copper cables? - Answers -
Bandwidth, Electromagnetic Immunity, Weight, Safety, Size, Attenuation, Security,
Upgradable
Fiber optic cables are made of _____________ material and are therefore immune to
________________. - Answers - dielectric, EMI
the four basic components of a fiber optic link are the: - Answers - transmitter, receiver,
fiber optic cable, connectors
LEDs have a relatively ___________ spectral width, while a laser's spectral width is
much _____________. - Answers - wide, narrow
A ___________ is the light source used with laser optimized multimode fiber. - Answers
- VCSEL (vertical-cavity surface-emitting laser)
The acronym for LASER is? - Answers - Light Amplification by Stimulated Emission of
Radiation
, What light source/wavelength is typically utilized in multimode plastic optical fibers? -
Answers - Visible (650 nm LED)
What are the multimode operating wavelengths? - Answers - 850nm, 1300nm
What light sources are used for multimode transmissions? - Answers - LED, VCSEL
What are the single mode operating wavelengths? - Answers - 1310 nm, 1550 nm, 1625
nm
What light source is used for single mode transmissions? - Answers - LASER
What component in a receiver circuit converts optical signals to electrical energy? -
Answers - Photodiode
Combining two or more wavelengths in a single fiber is an example of? - Answers -
Multiplexing
What are the standard operating wavelengths for single mode and multimode fiber? -
Answers - 850nm, 1300nm, 1550nm
What core sizes are commonly used for SM & MM fiber? - Answers - SM - 8-10 μm; MM
- 62.5 μm (US), 50 μm (Europe)
Define the layers and their characteristics shown below? - Answers - 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? - Answers -
Surrounding the core; provides the refractive index that allow total internal reflection of
light traveling in the core.
What is the mode? - Answers - The potential paths for light to move through the fiber
optic.
Singlemode fiber allows __________ path/s of light. - Answers - single
Multimode fiber allows ____________ path/s of light. - Answers - multiple
_______________ is when a light ray bounces off the interface between two materials. -
Answers - Reflection
When a light ray bends when changing speed from one material to another it is called
_____________. - Answers - refraction
What is the lowest achievable index of refraction? - Answers - 1.0 (Vacuum)
