Optic Fiber Test Questions and Answers With Verified Solutions 2025
Fiber optics is a communication _______ used to transmit information - ✔✔medium
The information travels in the form of light through _________ - ✔✔high-purity glass
Why does Corning fiber optic solutions use glass instead of plastic? - ✔✔Because the high-purity glass
allows for lower loss solutions
When is plastic fiber used? - ✔✔Used to cover short distances (normally under a foot)
What is the unit of measurement for the diameter or a fiber? - ✔✔(um) micron or micrometer
A coated optical fiber = _____ um - ✔✔250
What unit of measurement is used for cable diameter? - ✔✔(mm) millimeter
1 um = ______ - ✔✔one millionth of a meter
What unit of measurement is used for wavelengths? - ✔✔(nm) nanometer
What three things are required to make an optical system? - ✔✔1. Optical fiber and cable
2. Fiber termination
3. Demarcation hardware
What is the typical order of a transmission sequence? - ✔✔1. Information is encoded into electrical
signals
2. Electrical signals are converted to digital or analog light signals
3. The light travels through the fiber
, 4. A detector changes the light signals into electrical signals
5. Electrical signals are decoded into information
What are the three major components of an optical fiber? - ✔✔Core, cladding, coating
What component of the optical fiber carries information in the form of light signals? - ✔✔Core
What component of the optical fiber ensures that the light pulses remain in the core? - ✔✔Cladding
What is the core typically made out of? - ✔✔Pure silica, but Germania is added to change the glass
properties
The cladding is made up of pure silica, but does not contain ______, which gives it a different density
than the core - ✔✔Germania
Y/N: Can the cladding be separated from the core? - ✔✔No
What does the dual layer of coating that surrounds the cladding do? - ✔✔Provides extra protection
What is the coating made of? - ✔✔Acrylate
The fibers coating is colored for what purpose? - ✔✔Identification
The colored fiber diameter is ____ um - ✔✔250
The term _______ is used to define the color of light and is represented in nanometers and microns -
✔✔Wavelength
Fiber optical transmission is generally used in the _________ region, where light is invisible to the
human eye - ✔✔Infrared
Fiber optics is a communication _______ used to transmit information - ✔✔medium
The information travels in the form of light through _________ - ✔✔high-purity glass
Why does Corning fiber optic solutions use glass instead of plastic? - ✔✔Because the high-purity glass
allows for lower loss solutions
When is plastic fiber used? - ✔✔Used to cover short distances (normally under a foot)
What is the unit of measurement for the diameter or a fiber? - ✔✔(um) micron or micrometer
A coated optical fiber = _____ um - ✔✔250
What unit of measurement is used for cable diameter? - ✔✔(mm) millimeter
1 um = ______ - ✔✔one millionth of a meter
What unit of measurement is used for wavelengths? - ✔✔(nm) nanometer
What three things are required to make an optical system? - ✔✔1. Optical fiber and cable
2. Fiber termination
3. Demarcation hardware
What is the typical order of a transmission sequence? - ✔✔1. Information is encoded into electrical
signals
2. Electrical signals are converted to digital or analog light signals
3. The light travels through the fiber
, 4. A detector changes the light signals into electrical signals
5. Electrical signals are decoded into information
What are the three major components of an optical fiber? - ✔✔Core, cladding, coating
What component of the optical fiber carries information in the form of light signals? - ✔✔Core
What component of the optical fiber ensures that the light pulses remain in the core? - ✔✔Cladding
What is the core typically made out of? - ✔✔Pure silica, but Germania is added to change the glass
properties
The cladding is made up of pure silica, but does not contain ______, which gives it a different density
than the core - ✔✔Germania
Y/N: Can the cladding be separated from the core? - ✔✔No
What does the dual layer of coating that surrounds the cladding do? - ✔✔Provides extra protection
What is the coating made of? - ✔✔Acrylate
The fibers coating is colored for what purpose? - ✔✔Identification
The colored fiber diameter is ____ um - ✔✔250
The term _______ is used to define the color of light and is represented in nanometers and microns -
✔✔Wavelength
Fiber optical transmission is generally used in the _________ region, where light is invisible to the
human eye - ✔✔Infrared
