Telecommunications Fiber Optics 2

Question 1

What does EDFA stand for and what is its role?

Accepted Answer

Erbium-Doped Fiber Amplifier; amplifies optical signals without converting them to electrical

Answer

An EDFA (Erbium-Doped Fiber Amplifier) amplifies optical signals directly in the optical domain, enabling ultra-long-haul transmission.

Question 2

What is insertion loss in a fiber optic link?

Accepted Answer

The attenuation of optical power through a component or connector

Answer

Insertion loss is the reduction in optical signal power (measured in dB) caused by connectors, splices, splitters, and the fiber itself.

Question 3

What connector type is most commonly used in enterprise fiber deployments in the US?

Accepted Answer

LC

Answer

LC (Lucent Connector) connectors are the most widely deployed in modern enterprise and data center fiber installations due to their small form factor.

Question 4

What type of fiber splice permanently joins two fibers with minimal loss?

Accepted Answer

Fusion splice

Answer

Fusion splicing uses an electric arc to melt and fuse two fiber ends together, producing losses typically below 0.1 dB.

Question 5

What is the purpose of a fiber optic attenuator?

Accepted Answer

Intentionally reduce optical signal power to prevent receiver saturation

Answer

Fiber attenuators reduce optical signal power to prevent optical receivers from being overloaded by excessively strong signals.

Telecommunications Practice Test

Telecommunications Practice Test

Telecommunications Fiber Optics 2