SDH technology has been a mature and standard technology since its introduction in the 1990s. It is widely used in backbone networks and the price is getting lower and lower. SDH optical transceivers can be widely used in telecommunications data services, electric power, banking, public security, military and other departments public telephone network access or dedicated line information transmission. Next, the editor of Feichang Technology will explain the overview and technical applications of SDH optical transceivers in detail in the future, let's take a look!
SDH Optical Transceiver Overview
SDH Optical Transceiver has a large capacity, generally 4E1 to 252E1. SDH is a comprehensive information transmission network that integrates multiplexing, line transmission and switching functions and is operated by a unified network management system. It is a Synchronous Optical Network (SONET) proposed by the Bell Institute of Communication Technology in the United States. The International Telegraph and Telephone Consultative Committee (CCITT) (now ITU-T) accepted the SONET concept in 1988 and renamed it SDH, making it a general technical system not only for optical fiber but also for microwave and satellite transmission. It can realize multiple functions such as effective network management, real-time business monitoring, dynamic network maintenance, and intercommunication between equipment from different manufacturers, which can greatly improve network resource utilization, reduce management and maintenance costs, and achieve flexible, reliable and efficient network operation and maintenance Therefore, it is a hot spot for the development and application of transmission technology in the field of information in the world today.
The birth of SDH optical transceiver technology application SDH has its inevitability. With the development of communication, the information required to be transmitted is not only voice, but also text, data, image and video. Coupled with the development of digital communication and computer technology, in the 1970s and 1980s, T1 (DS1)/E1 carrier systems (1.544/2.048Mbps), X.25 frame relay, ISDN (Integrated Services Digital Network) and FDDI ( Optical fiber distributed data interface) and other network technologies.
With the advent of the information society, people hope that modern information transmission networks can provide various circuits and services quickly, economically, and effectively. However, due to the monotonicity of their services, the complexity of expansion, and the limitation of bandwidth, the above-mentioned network technologies are only in the original Modifications or improvements within the framework are no longer helpful. SDH was developed under this background. Among various broadband optical fiber access network technologies, the access network system using SDH technology is the most widely used.
The birth of SDH solves the problem of being unable to keep up with the development of the backbone network and user service requirements due to the bandwidth limitation of the inbound media, which has caused the access "bottleneck" between the user and the core network, and at the same time, it has increased a large amount of bandwidth on the transmission network. Utilization rate. Since the introduction of SDH technology in the 1990s, it has been a mature and standard technology. It has been widely adopted in backbone networks and the price is getting lower and lower. The application of SDH technology in the access network can reduce the huge bandwidth in the core network. Advantages and technical advantages are brought into the field of access networks, making full use of SDH synchronous multiplexing, standardized optical interfaces, powerful network management capabilities, flexible network topology capabilities, and high reliability to bring benefits, and long-term benefits in the construction and development of access networks .
Well, the above content is the detailed introduction of Feichang Technology on the overview and technical application of SDH optical transceivers. I hope it can be helpful to everyone! Feichang Technology , a professional manufacturer of optical transceivers, optical fiber transceivers, industrial switches, and protocol converters, independently researches and develops brands, welcome to come to understand and exchange.
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