Fiber Optics Flashcards
6 cards from real Telecommunications practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Fiber Optics flashcards as text
What does EDFA stand for and what is its role?
Answer: Erbium-Doped Fiber Amplifier; amplifies optical signals without converting them to electrical
An EDFA (Erbium-Doped Fiber Amplifier) amplifies optical signals directly in the optical domain, enabling ultra-long-haul transmission.
What is insertion loss in a fiber optic link?
Answer: The attenuation of optical power through a component or connector
Insertion loss is the reduction in optical signal power (measured in dB) caused by connectors, splices, splitters, and the fiber itself.
What connector type is most commonly used in enterprise fiber deployments in the US?
Answer: LC
LC (Lucent Connector) connectors are the most widely deployed in modern enterprise and data center fiber installations due to their small form factor.
What type of fiber splice permanently joins two fibers with minimal loss?
Answer: Fusion splice
Fusion splicing uses an electric arc to melt and fuse two fiber ends together, producing losses typically below 0.1 dB.
What is the purpose of a fiber optic attenuator?
Answer: Intentionally reduce optical signal power to prevent receiver saturation
Fiber attenuators reduce optical signal power to prevent optical receivers from being overloaded by excessively strong signals.
What does PON stand for and where is it typically used?
Answer: Passive Optical Network; used in fiber-to-the-home (FTTH) deployments
A PON (Passive Optical Network) is a point-to-multipoint fiber architecture used in FTTH deployments to serve multiple homes from one OLT.