Fiber optic is a medium used for transmitting data, which utilizes the principle of light reflection to transmit optical signals to a distance. Understanding the working principle of optical fiber can be approached from the following aspects:
\\u00a0 \\u00a0 \\u00a01. The principle of total reflection of light
The core of optical fiber is a very thin glass or plastic fiber. When optical signals are transmitted through optical fiber, the light propagates along the path of the fiber inside the fiber. The propagation of light is based on the principle of total reflection:
When light enters the cladding surrounding it from the core of the Fiber Optic Cable, if the angle of the light is large enough, reflection will occur, and the light will be “trapped” inside the fiber optic cable, not leaking to the outside, thus maintaining signal strength and continuing long-distance propagation.
\\u00a0 \\u00a0 2. Fiber optic structure
Fiber optic cables typically consist of three layers:
- Core: Optical signals are transmitted here, usually made of glass or high-purity plastic materials.
- Cladding: A layer of material surrounding the core, where optical signals propagate through total reflection inside the core. The refractive index of the cladding is lower than that of the core, ensuring that the optical signal is reflected back into the core.
- Jacket: The outer layer that protects the optical fiber from damage, usually made of plastic.
\\u00a0 \\u00a03. Transmission of optical signals
In optical fiber, data is transmitted in the form of optical signals, usually by converting electrical signals into optical signals through laser or LED emitters, and the optical signals propagate inside the fiber. When the optical signal is transmitted to the receiving end, it is converted back into an electrical signal and transmitted to the terminal device.
Due to the almost zero loss of optical signals in optical fibers, long-distance and high bandwidth data transmission can be achieved.
\\u00a0 \\u00a04. Types of optical fibers
- Single Mode Fiber: The core is very thin, and the light propagates almost in a straight line, making it suitable for long-distance transmission.
- Multi Mode Fiber: With a thicker core and multiple propagation paths, it is suitable for high-speed transmission over shorter distances.
summary
Fiber optics transmit optical signals through the principle of total reflection of light in slender glass or plastic fibers. Its high speed, low loss, and large bandwidth make it a key technology in modern communication networks. PKT factory is a network cable and fiber manufacturer (if it is your company or manufacturer) that can cooperate with it. It supports customized cables of multiple specifications, colors, and standards to meet the needs of different scenarios. We also support OEM/ODM services to help customers create their own exclusive brands. Collaborate with multiple logistics companies to ensure rapid delivery of products to customers.
