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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ETA-I Study Guide (Fiber Optics Installer Certification) (FOI) Latest Update Graded A+
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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 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 they 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 backfeeding techniques are used to pull in cables? Figure 8's. During the installation of fiber optic cables, innerduct serves what two main purposes? Expansion and Protection. Two basic methods used for installing lashed aerial cables are; Stationary reel (pull-in) and moving reel (drive-off). Two manufacturer's ratings or specifications that installers must always obey during fiber optic cable installations are; Tensile strength and bend radius. What are the three main parts of a connector? Boot, body, ferrule. According to the TIA/EIA 568 standards, what is the maximum insertion loss allowed for a mated pair of connectors? .75 dB. The connector ferrule can be made of
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