FOA CFOT Terms and Definitions A thru Z Exam Questions and Answers

FOA CFOT Terms and Definitions A thru Z Exam Questions and Answers 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 used to inject a signal into fiber. Total internal reflection - Answer ️️ -Confinement of light into the core of a fiber by the reflection off the core-cladding boundary. Test source - Answer ️️ -A laser diode or LED used to inject an optical signal into fiber for testing loss of the fiber or other components. Test kit - Answer ️️ -A kit of fiber optic instruments, incl. power meter, source and test accessories (to measure loss and power) Test cable - Answer ️️ -A short single fiber jumper cable with connectors on both ends. This cable must be made of fiber and connectors of matching type... Termination - Answer ️️ -The preparation of the end of a fiber to allow connection to another fiber or active device. Talkset - Answer ️️ -A communication device that allows conversation over unused fibers. Surface emitter LED - Answer ️️ -LED that emits light perpendicular to the semiconductor chip. Most LEDs used in data communications are this type