ETA Fiber Optics Certification Exam (2024/2025) Questions and Answers Solved Correctly!!

ETA Fiber Optics Certification Exam (2024/2025) Questions and Answers Solved Correctly!! 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 The typical numerical aperture for 50/125 I'm optical fiber is - ANSWER .200 One way to reduce modal dispersion is to - ANSWER Use a smaller core The number of modes in an optical fiber increases as the _____ decreases - ANSWER Wavelength What optical effect is produced by all mechanical interconnections whether mechanical splices or mated connected pairs - ANSWER Fresnel Reflections When light passes from one transparent medium to anther transparent medium that has a different refractive index the light wave bends this is called ? - ANSWER Refraction What part of the multimode optical fiber has the lowest refraction index - ANSWER Cladding.