Transmission Characteristics of Optical Fiber » Exercise - 1 1. LEDs are used as light sources in : (a) single mode fibers only (b) multimode fibers only (c) both single mode and multimode fibers (d) none of the above
Transmission Characteristics of Optical Fiber » Exercise - 1 8. Which of the cable length has the highest attenuation ? (a) 1 km (b) 2 km (c) 95 ft (d) 5500 ft
Transmission Characteristics of Optical Fiber » Exercise - 1 6. ………. dispersion is caused by the difference in the propagation times of light rays that take different paths down a fiber. & (a) material dispersion (b) wavelength dispersion (c) modal dispersion (d) delay dispersion
Transmission Characteristics of Optical Fiber » Exercise - 1 9. Which of the following is used as an optical receiver in fiber optics communications ? (a) APD (b) Tunnel diode (c) Laser diode (d) LED