Seeking the advantages and disadvantages of fiber optic communications

Fiber optic communications technology (optical fiber communications) from the optical communications, has become one of the main pillars of modern communications, plays a pivotal role in the modern telecommunications network. Fiber optic communications as an emerging technology, its rapid development in recent years, the application of a wide range of rare in the history of communications, but also the world's new technological revolution is an important symbol of the future of the information society and a variety of information in the main transmission tool.

Advantages:

Communication capacity, transmission distance; an optical fiber's potential bandwidth of up to 20THz. using such a bandwidth, only one second or so, you can be human ancient and modern Chinese and foreign all the text data transmission is complete. 400Gbit / s system has been put into commercial use. Optical fiber loss is extremely low, in the optical wavelength of 1.55μm near the quartz fiber loss can be less than 0.2dB/km, which is lower than the loss of any transmission medium. Therefore, the relay-free transmission distance can reach dozens, even hundreds of kilometers.

Signal interference is small, good confidentiality;

Electromagnetic interference, transmission quality is good, electric communication can not solve the problem of electromagnetic interference, only fiber optic communication is not subject to various electromagnetic interference.

Small size and light weight of optical fiber, easy to lay and transport;

Rich source of materials, environmental protection, good for saving non-ferrous metal copper.

No radiation, difficult to eavesdrop, because the optical fiber transmission of light waves can not run out of the fiber outside.

Fiber optic cable is adaptable and has a long life.

Disadvantages:

Brittle texture, poor mechanical strength.

The cutting and splicing of optical fibers requires certain tools, equipment and techniques.

Splitting and coupling are inflexible.

The bending radius of fiber optic cable cannot be too small (>20cm).

There are problems with power supply difficulties.