Development Of Optical Fiber Communication

Fiber optic communication is the main transmission method of modern communication networks, which has gone through three generations: short wavelength multimode fiber, long wavelength multimode fiber, and long wavelength single-mode fiber. The adoption of fiber optic communication is a major change in the history of communication. More than 20 countries including the United States, Japan, the United Kingdom, and France have announced that they will no longer build cable communication lines and are committed to developing fiber optic communication. China's fiber optic communication has entered the practical stage

The birth and development of fiber optic communication was an important revolution in the history of telecommunications, alongside satellite communication and mobile communication, which were listed as technologies of the 1990s. After entering the 21st century, due to the rapid development of internet services and the growth of audio, video, data, and multimedia applications, there is an urgent need for high-capacity (ultra high speed and ultra long distance) optical wave transmission systems and networks.

Fiber optic communication is a latest communication technology that uses light waves as carriers to transmit information and uses optical fibers as transmission media to achieve communication purposes.

The development process of communication is a process of continuously increasing the carrier frequency to expand communication capacity. Optical frequency, as the carrier frequency, has reached the upper limit of communication carriers. Because light is an electromagnetic wave with extremely high frequency, using light as a carrier for communication has a huge capacity, which is thousands or hundreds of times that of past communication methods and has great appeal. Optical communication has long been a goal pursued by people and is also an inevitable direction for communication development.

Compared with traditional electrical communication, fiber optic communication has many advantages: it has a large transmission frequency bandwidth and communication capacity; Low transmission loss and long relay distance; The wire diameter is fine, the weight is light, and the raw material is quartz, which saves metal materials and is conducive to the rational use of resources; Strong insulation and anti electromagnetic interference performance; It also has the advantages of strong corrosion resistance, strong radiation resistance, good flexibility, no electric sparks, low leakage, and strong confidentiality, and can be used in special environments or military situations.