🔍 Fiber Types
What’s the core size of singlemode fiber?
9 microns
What does the outermost layer of a cable protect against?
Environmental damage (sunlight, moisture)
What jacket color is used for singlemode fiber?
Yellow
What do we call the glass core + cladding + protective layers in a unit?
Fiber Optic Cable
What’s the name of the optical principle that keeps light inside the core?
Total Internal Reflection
What do the letters “OM” stand for?
Optical Multimode
What type of cable contains gel to protect from moisture?
Loose Tube
What jacket color represents OM3?
Aqua
This term describes signal loss over distance.
Attenuation
Fiber is immune to what kind of interference?
Electromagnetic interference (EMI)
Which type is optimized for VCSEL lasers?
OM3 or OM4
Which cable type is best for pulling through conduit indoors?
Tight Buffer
What color jacket would OM5 fiber have?
Lime Green
What’s the term for a small plastic cap that protects a connector endface?
Dust cap
How thin is a typical glass fiber?
Thinner than a human hair
Which two wavelengths are typically used in multimode fiber?
850 nm and 1300 nm
What is aramid yarn used for in a fiber cable?
Pull strength / strain relief
What color is used for most outdoor-rated PE jackets?
Black
What term describes light bouncing inside the core to keep it traveling?
Total internal reflection
What do we call the tool that fuses two fibers together?
Fusion splicer
What’s the main advantage of singlemode over multimode?
Longer distance, no modal dispersion
What type of cable has multiple stacked fibers for high-density installs?
Ribbon Fiber
Which fiber type uses an orange jacket and has a 62.5 μm core?
OM1
What’s the word for multiple light paths traveling down a multimode fiber?
Modes
True or False: Fiber optics can transmit both analog and digital signals.
True