FOA CFOT TERMS AND DEFINITIONS A THRU Z QUESTIONS AND ANSWERS WITH SOLUTIONS 2024/25

Watts - ANSWER What is a linear measure of optical power? Wavelength - ANSWER What is the measure of the color of light, usually expressed in nanometeres (nm) or microns (*m)? Wavelength Division Multiplexing (WDM) - ANSWER What do you call a technique of sending signals of several different wavelengths of light into the fiber simultaneously? Working Margin - ANSWER The difference (in dB) between the power budget and the loss budget (i.e. the excess power margin) is known as what? Visual Fault Locator (VFL) - ANSWER A device that couples visible light into the fiber to allow visual tracing and testing of continuity. Vertical Cavity Surface Emitting Laser (VCSEL) - ANSWER 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. Transmitter - ANSWER A device which includes an LED or laser source and signal conditioning electronics that is us