Selection of optical fiber cables in man Technology

There are still many things worth learning about man technology. Here we mainly introduce the selection of optical fiber cables in man technology. The direct tree distribution method and direct tree distribution method have similar structures. The number of cores of the trunk cable from the local terminal to the optical cable junction box, and from the optical fiber junction box to the optical fiber junction box is not decreasing, and the optical fiber trunk cable is derived from the optical fiber junction box.

The direct fiber configuration method with no decrease in tree shapes is suitable for areas that are subject to certain objective factors, such as insufficient pipeline resources and difficult to predict user distribution. Because the number of cores of the trunk cable from the local end to the optical fiber junction box, from the optical fiber junction box to the optical fiber junction box is not decreasing, it can immediately meet the changes in requirements along the line, the core features high compatibility. However, its trunk line is linear, and faults of upstream optical fiber lines will directly affect the survivability of downstream cables. Therefore, other optical fiber cables need to be rectified, it is also a configuration method with lower reliability. The number of Optical Fiber cores from the local terminal to the last junction box is equal to or slightly greater than the total number of fiber cores required for the junction box along the route.

Annular fiber without decreasing

The ring no-decrease Optical Fiber connecting method is the no-decrease Optical Fiber connecting method of the closed and synthetic ring of optical fiber cables. The ring no-decrease handover/configuration method provides dual-channel protection for any point on the ring. This method is suitable for high-speed or broadband businesses with a wide range of business needs and rapidly growing urban and commercial areas, it is especially suitable for large users with high reliability requirements. The annular fiber-optic method has a high flexibility and can meet unexpected customers or needs along the route at any time. In this method, the number of cores of the ring network cable is equal to the total number of cores of all the junction boxes on the ring.

Application of man Technology on selection of optical fiber cables

The Metropolitan Area Network (man) technology features a short transmission distance covering 50 ~ 150 km, 10 Gbit/s or 10 Gbit/s based WDM technology is adopted in super large cities in economically developed regions. dispersion compensation is generally not required. Even if the distance is long, large-scale dispersion compensation is not required. The cost of a G.652 Optical Fiber High-speed system is far lower than that of a G.655 Optical Fiber System. Therefore, we recommend that G.652 Single-Mode Optical Fiber be used at the Metropolitan Area Network technology level.

The cable structure should be determined based on the number of cores, application layer, and laying method. If the number of fiber cores is large and the number of fiber cables may be exhausted at any time to meet the sudden demand of users, we recommend that you use a backbone fiber-optic cable. To facilitate fiber splitting, the number of cores of the optical fiber band should be 6-core.

The above is just a rough idea about the design of the backbone layer, convergence layer, and access layer optical fiber/cable lines in the man technology. Access Networks in the transmission network are the most complex. They not only face numerous users with various business needs, but also have various access technologies. Currently, they are mainly copper cables. However, with the maturity and popularization of FTTH technology, fiber access will gradually extend to users, the structure and configuration of the optical fiber and cable lines in the access network will be very different from that of the traditional copper cables. Therefore, this article does not discuss the optical cable lines of the access network.