Fiber optics exam (Kuwait) Questions and Answers

Fiber optics exam (Kuwait) Questions and Answers Light is electromagnetic energy with a__________frequency and a _________weavelength compared to radio waves - Answer ️️ -Higher and shorter What type of light is used in fiber optic transmissions? - Answer ️️ -Infared What are the 4 items are needed for a fiber optic system to work? - Answer ️️ -Transmitter Fiber optic cable Receiver Connector 1mW is the same as what in dBM? - Answer ️️ -0dBm How is power measure in fiber optics? - Answer ️️ -dBM What fiber optic wavelength has the lowest loss - Answer ️️ -1550 nm What wavelength windows are used most for communication in optical fiber - Answer ️️ - 850nm 1300nm 1550nm What year was fiber optic cable first used in commercial telephone systems in the U.S - Answer ️️ -1977 What light source is used for single mode fiber - Answer ️️ -Laser Diode What two light source are used with multimode fiber? - Answer ️️ -LED & VCSEL All wavelength of light travel at the same speed. True or false - Answer ️️ -False Which type of fiber has the largest core size? Single mode or multimode ? - Answer ️️ - Multimode What is OSHA responsible for? - Answer ️️ -Enforce workplace safety What are the two wAays to reduce model dispersion? - Answer ️️ -Use graded index fiber Use smaller core What happened to the wavelength in optical fiber when the number of modes increase? - Answer ️️ -It gets shorter