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How optical networking works
- 1. Light signal generation The optical networking process begins by converting data into light pulses. ...
- 2. Light transmission The system sends light pulses carrying data through a fiber optic cable during this phase. ...
- 3. Data encoding ...
- 4. Light propagation ...
- 5. Signal reception and integration ...
- 6. Data processing
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Optical networking is a means of communication that uses signals encoded in light to transmit information in various types of telecommunications networks. These include limited range local-area networks (LAN) or wide area networks (WANs), which cross metropolitan and regional areas as well as … See more
Fiber-optic networks
The most common fiber-optic networks are communication networks, mesh networks or ring networks commonly used in metropolitan, regional, national and international … See moreComponents of a fiber-optical networking system include:
• Fiber. Multi-mode or single-mode.
• Laser … See moreUsing optical amplifiers, the capacity of fibers to carry information was dramatically increased with the introduction of wavelength-division multiplexing (WDM) in the early 1990s. … See more
Synchronous Optical Networking (SONET) and Synchronous Digital Hierarchy (SDH) have evolved as the most commonly used protocols for optical … See more
1940The first communication system relied on coaxial cable that operated at 3 MHz and could carry 300 telephone conversations or one television channel.1957Gordon Gould first described the design of the optical amplifier.1960The laser was demonstrated by Theodore Maiman.1964Charles Kao showed that to transmit data for long distances, a glass fiber would need loss no greater than 20 dB per kilometer.1970Donald B. Keck, Robert D. Maurer, and Peter C. Schultz of Corning Incorporated designed a glass fiber, made of fused silica, with a loss of only 16 dB/km.1975The most advanced coaxial system had a bit rate of 274 Mbit/s.1977The first fiber-optic system for live telephone traffic was in Long Beach, Calif., by General Telephone and Electronics, with a data rate of 6 Mbit/s.1980sLasers and detectors that operated at 1300 nm, where the optical loss is 1 dB/km, had been introduced.1987Lasers and detectors were operating at 1.7 Gbit/s with repeater spacing of about 50 km.1990sWavelength-division multiplexing (WDM) was introduced.The capacity of fiber optic networks has increased in part due to improvements in components, such as optical amplifiers and optical filters … See more
The density of light paths from WDM was the key to the massive expansion of fiber optic capacity that enabled the growth of the Internet in the 1990s. Since the 1990s, the channel count … See more
Wikipedia text under CC-BY-SA license What Is Optical Networking? Complete Explanation
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