Google Fiber expands to new NC communities, bringing options and disruptions
Hillsborough Mayor Jenn Weaver says her Orange County town will welcome Google Fiber—though perhaps not the construction that comes with it.
Apr 6, 2023
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Business
Hillsborough Mayor Jenn Weaver says her Orange County town will welcome Google Fiber—though perhaps not the construction that comes with it.
Apr 6, 2023
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Engineering
Johns Hopkins engineers have created a new lens-free ultra-miniaturized endoscope, the size of a few human hairs in width, that is less bulky and can produce higher quality images.
Dec 6, 2019
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125
Robotics
Hacked bank and Twitter accounts, malicious power outages and attempts to tamper with medical records threaten the security of the nation's health, money, energy, society and infrastructure. Harnessing the laws of nature—namely ...
May 25, 2022
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Electronics & Semiconductors
EPFL researchers have developed electronic fibers that, when embedded in textiles, can be used to collect data about our bodies by measuring fabric deformation. Their technology employs flexible transmission lines and offers ...
Jun 1, 2020
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149
Electronics & Semiconductors
A new technique that synchronizes the clocks of computers in under a billionth of a second can eliminate one of the hurdles for the deployment of all-optical networks, potentially leading to more efficient data centers, according ...
Jun 22, 2020
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142
Electronics & Semiconductors
Researchers have developed a data transfer system that can transmit information 10 times faster than a USB. The new link pairs high-frequency silicon chips with a polymer cable as thin a strand of hair. The system may one ...
Feb 24, 2021
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Internet
Have you ever wondered how an email sent from New York arrives in Sydney in mere seconds, or how you can video chat with someone on the other side of the globe with barely a hint of delay? Behind these everyday miracles lies ...
Apr 2, 2024
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Electronics & Semiconductors
In the last few years, several technology companies including Google, Microsoft, and IBM, have massively invested in quantum computing systems based on microwave superconducting circuit platforms in an effort to scale them ...
May 10, 2021
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122
Business
Artificial intelligence (AI) is often cast as wreaking havoc and destroying jobs in reports about its growing use by companies. The recent coverage of telecom group BT's plans to reduce its number of employees is a case in ...
May 29, 2023
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Computer Sciences
Australia's newest supercomputer, Setonix, has produced a highly detailed image of a supernova remnant immediately after the computing system's first stage was made available to researchers.
Aug 9, 2022
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An optical fiber (or fibre) is a glass or plastic fiber that carries light along its length. Fiber optics is the overlap of applied science and engineering concerned with the design and application of optical fibers. Optical fibers are widely used in fiber-optic communications, which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communications. Fibers are used instead of metal wires because signals travel along them with less loss, and they are also immune to electromagnetic interference. Fibers are also used for illumination, and are wrapped in bundles so they can be used to carry images, thus allowing viewing in tight spaces. Specially designed fibers are used for a variety of other applications, including sensors and fiber lasers.
Light is kept in the core of the optical fiber by total internal reflection. This causes the fiber to act as a waveguide. Fibers which support many propagation paths or transverse modes are called multi-mode fibers (MMF), while those which can only support a single mode are called single-mode fibers (SMF). Multi-mode fibers generally have a larger core diameter, and are used for short-distance communication links and for applications where high power must be transmitted. Single-mode fibers are used for most communication links longer than 550 metres (1,800 ft).
Joining lengths of optical fiber is more complex than joining electrical wire or cable. The ends of the fibers must be carefully cleaved, and then spliced together either mechanically or by fusing them together with an electric arc. Special connectors are used to make removable connections.
This text uses material from Wikipedia, licensed under CC BY-SA