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Fiber-optic communication is a form of optical communication for transmitting information from one place to another by sending pulses of infrared or visible light through an optical fiber. [ 1 ] [ 2 ] The light is a form of carrier wave that is modulated to carry information. [ 3 ]
Fiber Optics - The Basics of Fiber Optic Cable at the Wayback Machine (archived 2018-10-23) Educational site from Arc Electronics MIT Video Lecture: Understanding Lasers and Fiberoptics Ajoy Ghatak and K. Thyagarajan, "Optical Waveguides and Fibers" (PDF) , Fundamentals of Photonics , Indian Institute of Technology, archived from the original ...
The earliest basic forms of optical communication date back several millennia, while the earliest electrical device created to do so was the photophone, invented in 1880. An optical communication system uses a transmitter , which encodes a message into an optical signal , a channel , which carries the signal to its destination, and a receiver ...
This is the basic principle behind fiber optics in which light is guided along a high index glass core in a lower index glass cladding (Figure d). Ray optics only gives a rough picture of how waveguides work. Maxwell's equations can be solved by analytical or numerical methods for a full-field description of a dielectric waveguide.
An optical attenuator, or fiber optic attenuator, is a device used to reduce the power level of an optical signal, either in free space or in an optical fiber. The basic types of optical attenuators are fixed, step-wise variable, and continuously variable.
There are two basic properties of light that are actually used in this approach: The light can be delayed by passing it through an optical fiber of a certain length. The light can be split into multiple (sub)rays. This property is also essential because we can evaluate multiple solutions in the same time.
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(fiber-to-the-screen or -seat): On an airplane, fiber reaches the IFE screens (fiber-to-the-street): The customer is connected using copper to the fiber passing near the building, up to 200 m (700 ft) away. This is a compromise between FTTB and FTTC. Typically providing up to 500 Mbit/s (fiber-to-the-subscriber): This is a synonym for FTTP