In recent years, my country has implemented a policy of expanding college enrollment, followed by the expansion of college campuses. Many colleges and universities have built new campuses to meet the requirements of larger schools. With the increasing demand for building digital campuses, various applications based on campus networks have emerged one after another, such as all-in-one cards, video teaching, etc. Considering the security and stability of the applications, each application generally requires independent networking. Generally speaking, although the old and new campuses of most colleges and universities are in the same city, the physical distance is generally tens of kilometers apart. Therefore, the data transmission between campuses must use optical fiber transmission, and the school itself does not have optical fiber cable resources and must be rented from the operator. Bare optical cable. In order to save the cost of optical cable lease and improve the utilization rate of optical fiber, WDM technology is undoubtedly the most competitive solution.
Colleges and universities can rent two pairs of bare optical fibers with different lines between the main campus and branch campuses, and use wavelength division multiplexing equipment to build a dual-route wavelength division transmission system that interconnects the two campuses by bare optical fibers in order to realize the uninterrupted network. Intermittent service. WDM technology realizes the interconnection of multiple link channels through a pair of bare optical fibers, which not only perfectly releases optical fiber resources, but also makes customers feel the massive bandwidth while also improving network reliability. After the two campuses are interconnected, the entire campus network data transmission can adopt a unified management method to avoid the repeated purchase of equipment and repeated investment in construction.
The application of WDM technology for capacity expansion requires only two-core optical fibers for the backbone, which solves the problem of the shortage of optical fiber resources in universities.
It supports long-distance transmission and effectively solves the problems of dispersion of college campuses and poor fiber quality.
Support multiple service access, mixed transmission, without mutual influence.
It supports smooth expansion, and expands the bandwidth according to actual needs, up to 4T. Greatly improve the network speed of the campus network.
Support dual-route 1+1 protection function to ensure that services are not affected by optical cable interruption.