Let's talk about the secret of fiber HDMI
With the development of 5G technology, it uses the next generation of cellular technology with microwave transmission, fast speed and large coverage. 5G can speed up to 10Gbps. The future application is to use light technology for mainstream to develop electronic products that bring consumers the best experience. With the progress of fiber optic replacement of copper, the progress of fiber optic cable is becoming more and more dense. The fiber optic cable will become the mainstream of the cable within two to three years. For example, if you only need a two or three meters long HDMI cable, then there is no need to choose a fiber optic HDMI cable, choose the traditional HDMI cable instead, but if you need a HDMI cable more than 10 meters, then the fiber HDMI cable is your first choice. But this long-distance optical fiber HDMI cable needs to be protected when it is used. Do not use it in large folds. Be careful when pre-embedding. It needs a certain degree of curvature at the corner, not a vertical folding of 90 degrees. Because there are relatively few researches on optical cables in HDMI Association, the AOC series of HDMI cables on the market are currently inconsistent. Buyers urgently need reference materials for AOC series wire selection.
The history of fiber development
In ancient times, there was no Internet, no optical cable. To transmit information quickly, only flying pigeons were used. However, with the rapid development of science and technology, human beings have entered the information age. As the amount of information increases, it is necessary to find a new transmission method. After years of researching, the transmission speed is faste, the transmission volume is larger, and the low-loss optical fiber communication is born. From then on, human beings have entered the optical era.
In 1870, British physicists discovered the principle of total reflection of light, which laid the foundation for future fiber transmission signals.
In 1880, the invention of the "optical phone" was born, which used the beam to transmit sound waves.
In 1970 Corning developed a quartz glass fiber with less attenuation.
The first fiber optic cable came into commercial use in 1980.
In 1988 human beings successfully laid the transatlantic submarine cable connecting England and American.
In 1978, China developed its own communication fiber.
In 2005, the ultra-large capacity optical fiber communication was opened in Shanghai to Hangzhou.
How does the fiber transmit signals?
Optical fiber is a kind of transmission tool, just like a thin plastic wire. A very thin fiber will be packaged in a plastic sleeve for long-distance information transmission. Therefore, the fiber optic cable contains optical fibers. The optical fiber is composed of a cable core, which is covered with a sheath and a protective layer for communication, Thus we achieved long-distance large-capacity information transmission. If the Internet is compared to an information highway, the optical cable is like the cornerstone of the expressway. So how does the large-capacity information optical cable transmit information at high speed and long distance?
The optical fiber made of glass fiber inside the fiber can transmit optical signals to thousands of kilometers, and combine hundreds of thousands of optical fibers to form a cable with the same cable, which improves the strength of the optical fiber, and greatly increases the communication capacity. The speed of light propagation in different substances is different, so when a substance is shot to another substance, the junction of the two substances will be refracted and reflected, and the light is refracted. The angle will change with the angle of the incident light. When the angle of the incident light reaches or exceeds an angle, the refracted light will disappear, and the incident light will be reflected back. This is the total reflection of the light, which is first transmitted at the transmitting end. The information (such as voice) becomes an electrical signal, which is then transmitted to the laser beam by the laser. The intensity of the light changes with the frequency of the electrical signal and is transmitted through the optical fiber. At the receiving end, the detector receives the optical signal and then takes it, then turn into an electrical signal, after processing to restore the original information.
Light weight: because the material uses a very light weight fiber, the optical fiber HDMI cable is smaller and lighter than the traditional HDMI cable.
Lossless transmission: audio and video transmission truly realizes lossless transmission. Video information and audio information are completely immune to external electromagnetic interference, ensuring high fidelity of transmitted signals. Especially for the audio information with extremely high transmission material requirements, there is almost no noise, ensuring the sound is extremely pure.
Long transmission distance: using optical fiber transmission medium, signal transmission attenuation over long distances can be neglected, and the longest transmission distance can reach more than 300m. This feature is especially important for home theater, because even in the living room theater, the embedded HDMI cable is at least 10 meters long.
High transmission bandwidth: fiber HDMI cable can support high bandwidth, for high-bandwidth 4K video, 3D video, transmission is under no pressure.
Related Products
