Because the attenuation of the fiber is much less at those wavelengths.
No, optical cables use light to transmit audio signals, while S/PDIF cables use electrical signals. Optical cables are most commonly used with devices like home theater systems, whereas S/PDIF cables are found on a variety of audio equipment like TVs and CD players.
An optical microscope is what is commonly known as compound microscope.
There are many websites and companies that offer optical digital cables for sale. Some of these companies that offer the cables are Amazon, ZORO Tools and Walmart.
In wired connections, the medium that carries data in the form of light signals is typically optical fiber. Optical fiber cables use glass or plastic fibers to transmit data using pulses of light, allowing for faster and more reliable data transmission compared to traditional electrical cables.
Do you mean fiber cables? If so, each glass fiber carries a beam of light which is modulated by the information being carried. These days the data is usually binary encoded before being transmitted.
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All optical cables will sound almost exactly alike. There is no reason to spend a lot on these. Usually you get better shielding and performance by spending more, but optical signals are not interrupted by any source of outside interference. HDMI cables are similar, as it transmit a digital signal, a very inexpensice HDMI cable will yield the same results as the most expensive. Buy all cables from monoprice.com, they are the industry standard equipment supplier for people in the know.
Optical cables are used for data transmission or as light guides in medical applications. Because of their illumination, they are used in toys, signs and artificial Christmas trees.
Optical fiber's main advantage over regular electric cables is that they don't experience electromagnetic interference of any kind, thus allowing signals to be sent where regular cables would get cut off. Another important advantage is that distance affects electric cables' data bandwidth much more severely than it does optic fiber.
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Optical-based music transmission and reception refers to the use of light to encode and transfer audio signals. In this process, sound waves are converted into light signals using devices such as lasers or LEDs, which are then transmitted through fiber optic cables or other optical mediums. At the receiving end, photodetectors convert the light signals back into electrical signals, which are then transformed into audible sound. This method allows for high-speed data transmission with minimal interference and loss of quality.
An optical fiber is a flexible, transparent fiber made of very pure glass (silica) not much bigger than a human hair that acts as a waveguide, or "light pipe", to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of optical fibers is known as fiber optics. 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 communication. Fibers are used instead of metal wires because signals travel along them with less loss and 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.