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FOA CFOT Terms and Definitions A thru Z Questions With Complete Solutions

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What is a linear measure of optical power? correct answer: Watts What is the measure of the color of light, usually expressed in nanometeres (nm) or microns (*m)? correct answer: Wavelength What do you call a technique of sending signals of several different wavelengths of light into the fiber simultaneously? correct answer: Wavelength Division Multiplexing (WDM) The difference (in dB) between the power budget and the loss budget (i.e. the excess power margin) is known as what? correct answer: Working Margin A device that couples visible light into the fiber to allow visual tracing and testing of continuity. correct answer: Visual Fault Locator (VFL) A type of laser that emits light vertically out of the chip, not out of the edge, and is widely used in fast multimode networks. correct answer: Vertical Cavity Surface Emitting Laser (VCSEL) A device which includes an LED or laser source and signal conditioning electronics that is used to inject a signal into fiber. correct answer: Transmitter

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