Explore tens of thousands of sets crafted by our community.
Fiber Optic Communication
18
Flashcards
0/18
Cladding
The layer of the optical fiber that surrounds the core and has a lower refractive index to keep the light contained in the core via total internal reflection.
Optical Amplifier
A device that amplifies an optical signal directly, without the need to first convert it to an electrical signal.
Multimode Fiber
A type of optical fiber that is designed to carry multiple light rays or modes concurrently, each at a slightly different reflection angle within the optical fiber core.
Fusion Splicing
A permanent, low-loss method used to join two optical fibers by melting their ends together, typically using an electric arc.
Laser Diode
A semiconductor device that emits coherent light when current is applied, commonly used as a light source in fiber optic communication systems.
Fiber Optic Cable
An assembly similar to an electrical cable, but containing one or more optical fibers used to carry light. The cable is typically encased in a protective tube suitable for the environment where it will be laid.
Wavelength Division Multiplexing (WDM)
A method used in fiber optics to combine multiple signals at different wavelengths onto the same fiber.
Numerical Aperture (NA)
A dimensionless number that characterizes the range of angles over which the system can accept or emit light, calculated as , where and are the refractive indices of the core and cladding respectively.
Photodetector
A device that detects light and converts it into an electrical signal, essential in fiber optic systems to receive signals.
Total Internal Reflection
The phenomenon that occurs when a propagated wave strikes a medium boundary at an angle larger than a particular critical angle with respect to the normal to the surface.
Dispersion
The spreading of a light pulse over time as it travels through the optical fiber, caused by having different speeds of light for different wavelengths (chromatic dispersion) or different paths (modal dispersion).
Cutoff Wavelength
The wavelength above which a single-mode fiber allows only one mode to propagate and below which it becomes multimode.
Single-Mode Fiber
A type of optical fiber designed to carry only a single ray of light, often used for long-distance signal transmission.
Light Emitting Diode (LED)
A semiconductor light source that emits light when current flows through it, used as a light source for multimode fiber optics due to its wide spectral width and lower cost.
Optical Fiber
A flexible, transparent fiber made of high-quality extruded glass (silica) or plastic, slightly thicker than a human hair. It functions as a waveguide to transmit light between the two ends of the fiber.
Attenuation
The reduction in power of the light signal as it travels through the fiber optic cable, measured in decibels (dB).
Bit Error Rate (BER)
The number of bit errors per unit time or per number of transferred bits during a communication over a digital transmission link.
Fiber Bragg Grating (FBG)
A structure that reflects particular wavelengths of light and transmits others, used in optical fibers for various filtering and sensing applications.
© Hypatia.Tech. 2024 All rights reserved.