ETA-I Study Guide (Fiber Optics Installer
Certification) (FOI) Latest Update
Graded A+
An optical fiber works based off of a principle known as; Total Internal Reflection.
The bending of light as it passes from one transparent material into another which has a different
refractive index ...
ETA-I Study Guide (Fiber Optics Installer Certification) (FOI) Latest Update Graded A+ An optical fiber works based off of a pri nciple known as; ✔✔Total Internal Reflection. The bending of light as it passes from one transparent material into another which has a different refractive index is what? ✔✔Refraction. Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X -rays and _______________. ✔✔Infrared . What are the three parts of a typical optical fiber? ✔✔Core, Cladding, buffer Coating. (3 C's) A simple fiber optic system consists of what four components? ✔✔Transmitter, receiver, fiber, and connector. Which optical fiber is most suited for very high speed and long distance applications? ✔✔Single -mode. The reduction of power as a signal passes through a system is called (Also known as signal loss); ✔✔Attenuation. A fiber optic cable which has single -mode and multi -mode optical fibers is what kind of cable? ✔✔Hybrid. A fiber with it's core having numerous concentric layers of glass, with each layer having a lower index of refraction is what kind of fiber? What is the core size and how is it identified now? ✔✔Multi -mode graded -index. The spreading of light pulses as th ey take different paths in traveling down a fiber is known as what? ✔✔Modal Dispersion. What are the two widely used methods for installing buried fiber optic cables? ✔✔Trench and Plow methods. What configurations should be used when the center pull or b ackfeeding techniques are used to pull in cables? ✔✔Figure 8's.
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