There are many types of optical fiber, including indoor type, indoor/outdoor generality, insect -proof type, etc., the number of optical fiber cores from 4 to 48 cores. In addition, all old multi -mode 50/125 micrometer optical fiber supports LED light sources and laser light sources. Optical fiber supports low-cost and high-performance serial transmission technology 10GBASE-SR, supports the lowest cost-850 nanometer light source, and electronic equipment using this light source, transmits 10 meters or farther distance. The transmission distance of the Gigabit Ethernet in the optical fiber system can be extended to 900 meters, which means that when the distance between the building is more than 550 meters, users do not have to use expensive laser devices. At the same time, optical fiber is compatible with the existing optical fiber wiring and connecting hardware, and supports traditional network technology token Ring, FDDI, VG Anylan, Ethernet, Fibre Channel, and ATM, which can be used for horizontal systems, vertical systems and centralized fiber wiring.

The widespread use of optical fibers has made today's network planning easier, and the performance of the network has also been greatly improved and more guaranteed. From the global Internet, to the major campuses and enterprises, they are widely used in optical fiber communication technology. "Information Highway" is trying to extend directly to various communities through fiber optic fibers, or even directly connect to the user's home.

With the decline in the cost of Ethernet equipment and the continuous improvement of people's requirements for network applications, the application of Wanzo Ethernet has become a trend. With its small quality, large capacity, and transmission bandwidth, optical fiber has become the first choice for the application of Wanzo Ethernet. Although single -mode optical fiber can meet this requirement, it is necessary to use laser light sources, and the cost of the corresponding light recovery is also very high. Ordinary multi -mode fiber can only meet the applications below the gigabit and cannot meet the requirements of high -speed Ethernet. After research, the industry has developed a light source named VCSEL, which has better performance than traditional LED light sources. By optimizing the improvement of 50/125 micron fiber, it can be supported by VCSEL, which can support 30 nanometer wavelengths 30