ETA Fiber Practice Questions with Correct Answers
ETA Fiber Practice Questions with Correct Answers Light is electromagnetic energy with ____ frequency and a ______ shorter wavelength - ANSWER Higher then shorter fiber optics transmission takes place in _____ portion of the light spectrum - ANSWER IR A simple fiber optic System consist of what 4 parts - ANSWER Transmitter, fiber optic cable, receiver, connecters What absolute power is Dbm referenced to - ANSWER 1 milliwatt Absolute power in optical fiber is specified as - ANSWER Dbm Attenuation in optical fiber is lowest at what wavelength - ANSWER 1550 What are the three most common wavelength windows used for communication thru optical fibers - ANSWER 1550, 850, 1300 In North America what year was the first fiber optic telephone system installed - ANSWER 1977 Single-mode fiber optic systems typically use what light source - ANSWER Laser diode Multimode Fiber optic transmitters typically use what two low cost light sources - ANSWER Led, VCSEL
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