ETA-I Study Guide (Fiber Optics Installer Certification) (FOI) with Complete Solutions 100% Pass

ETA-I Study Guide (Fiber Optics Installer Certification) (FOI) with Complete Solutions 100% Pass An optical fiber works based off of a principle known as; - Answer- Total Internal Reflection. The bending of light as it passes from one transparent material into another which has a different refractive index is what? - Answer- Refraction. Light is electromagnetic radiation in the wavelength range including visible, ultraviolet, X-rays and _______________. - Answer- Infrared. What are the three parts of a typical optical fiber? - Answer- Core, Cladding, buffer Coating. (3 C's) A simple fiber optic system consists of what four components? - Answer- Transmitter, receiver, fiber, and connector. Which optical fiber is most suited for very high speed and long distance applications? - Answer- Single-mode. The reduction of power as a signal passes through a system is called (Also known as signal loss); - Answer- Attenuation. A fiber optic cable which has single-mode and multi-mode optical fibers is what kind of cable? - Answer- 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? - Answer- Multi-mode graded-index. The spreading of light pulses as they take different paths in traveling down a fiber is known as what? - Answer- Modal Dispersion. What are the two widely used meth