What Is a Fiber-Optic Transmitter?

Optical fiber transmission, that is, data and signal transmission using optical fiber as a medium. Optical fiber can not only be used to transmit analog and digital signals, but also meet the needs of video transmission. Optical fiber transmission is generally performed using optical cables. The data transmission rate of a single optical fiber can reach several Gbps. Without the use of repeaters, the transmission distance can reach tens of kilometers.

Looking at home and abroad

Optical fiber is a very convenient tool for transmitting signals. One of the slim optical cores in the cable can replace thousands of physical communication lines and complete a large number of long-distance communication tasks. The eight advantages of fiber optic transmission are as follows:

1. High sensitivity without interference from electromagnetic noise.

2. Small size, light weight, long life and low price.

3.

The realization and development of optical cable transmission have formed several advantages of it. Relative to the copper wire rate of 1.54MHZ per second,

Light emitting diode

Optical cables are not easy to branch. Because optical signals are transmitted, they are generally used for point-to-point connections. Light bus

The transmission loss characteristic of optical fiber is one of the most important factors that determine the transmission distance, transmission stability and reliability of optical networks. There are many reasons for optical fiber transmission loss. In the construction and maintenance of optical fiber communication networks, what is most noteworthy is the cause of transmission loss in the use of optical fiber and how to reduce these losses. There are two types of transmission loss caused by the use of optical fiber: splice loss (inherent fiber loss, fusion loss, and movable joint loss) and non-continuous loss (bending loss and losses caused by other construction factors and application environments).

Optical fiber transmission equipment transmission methods can be simply divided into: multi-mode optical fiber transmission equipment and single-mode optical fiber transmission equipment.

Fiberhome Technology Group Wuhan Academy of Posts and Telecommunications announced that the "Basic Research on Ultra-high Speed, Ultra-large Capacity and Ultra-long Distance Optical Transmission" project undertaken by the Institute has made a new breakthrough, and the single-line optical fiber transmission distance has been increased from 1,000 kilometers to 2,240 kilometers.

With the explosive growth of Internet applications, countries around the world are racing to develop ultra-high-speed, ultra-large-capacity, ultra-long-distance optical fiber transmission technologies. China has also included this technology in the key scientific research projects of the National 973 Program.

On this basis, Wuhan Academy of Posts and Sciences continued to complete fiber optic transmission experiments with a total transmission capacity of 17.32TB / s, 220 million people talking at the same time, and a transmission distance of 1,000 kilometers. This experiment again drove up to 2,400 kilometers, making the world s difficult problem of greater transmission capacity and shorter distances in the field of optical fiber communications solved.