Chapters 1, 2, 3 Fiber Optics Exam Questions and Answers

Chapters 1, 2, 3 Fiber Optics Exam Questions and Answers What is the fiber optic color code? - Answer ️️ -Blue, orange, green, brown, slate, white, red, black, yellow, violet, rose, and aqua. What is the fiber optic color code backwards? - Answer ️️ -Aqua, rose, violet, yellow, black, red, white, slate, brown, green, orange, and blue. Single-mode fiber - Answer ️️ -Used for long distances, has a smaller core fiber, and operates at nm. Multi-mode fiber - Answer ️️ -Used for short distance, has a larger core, and operates at 850- 1300 nm. Optical Amplifiers - Answer ️️ -Substances that allow for the amplifcation of light traveling through the fiber line. This made it so that not has many repeaters would need to be laid between each stretch of fiber cable. The first of these substances used erbium as its dopant. These also allowed for the carrying of two signals over a line (as long as they did not have a wavelength that interfered with each other). TAT-8 - Answer ️️ -First transatlantic fiber optic cable that operated at 565 mbps through two operating fiber pairs. It began its operation in 1988. TAT-12/13 - Answer ️️ -The first transatlantic fiber optic cable to use an erbium-doped fiber as its optical amplifier. Dense wavelength-division multiplexing (DWDM) - Answer ️️ -Allowed for higher bandwidths, as it enabled a single fiber to pack wavelengths closer together. By 2001, some manufacturers had cable that could transmit 100 wavelengths at 10 gbps each (meaning it could run at 1 tbps). A - Answer ️️ -1. Confining light in a material by surrounding it by another material with lower refractive index is the phenomenon of ________. a. cladding b. Total internal reflection c. total internal refraction d. transmission B - Answer ️️ -Abraham van Heel, in order to increase the total internal reflection, covered bare fiber with transparent cladding of _____. a. Higher refractive index. b. Lower refractive index. c. Higher numerical aperture d. Lower numerical aperture. A - Answer ️️ -The high loss