The manufacturers always try to launch a newer version of the HDMI cables with better working capacity, and the most popular among them is the 4k hdmi cable. The 4k line is probably one of the best cables available at an affordable price. Even now, people feel fiber optics is a complex subject and get confused about the data transmission process. But not to worry, as you continue reading this article, you will know about the fiber optics working, signal transmission and receiving process, etc.
Parts of the Optical Fiber Cables
There is no surprise that an optical fiber cable is made out of millions of optical fibers. As we all know, the fibers are made of the thinnest & lightest material possible, and each thread has two parts: core and cladding.
1. Core
A core is the innermost layer of the optical fiber where the light travels. The core is usually made of glass because glasses have the lowest refractive index, which is an excellent benefit in total internal reflection (TIR).
2. Cladding
Cladding is the middle layer of the optical fiber made out of hard plastic or glass. The prime job of the cladding is to reflect the light to the core so that signal loss is minimized.
3. Buffer
This is the outermost layer made of plastic, and in general, it is called a shock absorber. The prime function of the buffer is to provide physical protection to the cladding, and sometimes metallic sheaths are blended into the plastic for extra protection.
How the signal transmission takes place?
After performing multiple total internal reflections by each photon while the light signal or laser travels in the core and reaches the receiver, it gets converted into electrical signals. At the receiver end, detection is performed. After detection, the signal is sent to the transmitter with double frequency. If you look closely, you can understand that the use of optical fibers for long-distance transmissions is appreciated more. That’s why gamers, multi-story offices, and satellite communications require optical fiber cables.
An Alternative Method
Suppose if you don’t want to do the conversions at the receiver end, then there is a choice for you to use optical amplifiers. The most commonly used optical fiber is EDFA (Erbium-doped fiber amplifier). The advantages of using the amplifier are
- Firstly, it has greater bandwidth to work with multiple individual channels simultaneously, which saves time.
- The second is they are as good as repeaters. Optical fibers are cheaper than repeaters.
- The third is they are very flexible in their working capacity and can even work with low laser powers.
- By avoiding the conversion of signals, you can save time assuring a quick response. The signal loss is also out of the picture.
How to enhance the working of optical fiber cables?
- For transmitters, use laser especially, vertical-cavity surface-emitting laser (VSCEL)
- Use the optical fibers that are doped with Erbium (a rare earth metal)
- Use wavelength-division multiplexing and a dispersion compensator
- Use doubly or quadruple coated cladding.
Conclusion
The transmissions of optical fiber cables depend upon the quality of parts of the cable, and the type of enhancers are being used —the more the expensive line, the more excellent the working efficiency. You can check some of the cables at Ibra Online for a better understanding.
