Application Of Fiber Optic Techniques In Xinyang Cable TV Network Design

With the development of times and the advance of technology, optical fiber transmission technology has been increasingly extensive applied in the field ofcommunications, broadcasting and TV. Optical fiber transmission has the advantage ofrich capacity, high reliability, strong anti-interference ability, much resources and low price. This paper mainly research on optical fiber technology in the application of cable TV, aimed at improving Xinyang branch of Henancable’s digital and analog TV signal transmission quality, rich content, and transmission reliability.The corresponding concept of optical communication technology and fiber optic communication principle are chiefly introducedin this paper. Then based on the first phase of Xinyang branch network transformation, the shortagewhich exists in it are analyzed, and the concrete projecthas been proposed, which are from network structure, technical parameters configuration, solutions of up and down signalor echo signal, network bandwidth, frequency allocation, the index distribution and system solutions, sustainable utilization of the resources of network power supply, comprehensively expounds the network upgrade from 450 MHZ to 860 MHZ system; Providing the one-way, star - tree low reliability transmission system upgrade to ring - star - tree structure, high reliability system solutions.This network upgrade adopted domestic general HFC architecture (cable, coaxial cable transmission network structure). Network set up primary and secondary transmission mode, primary transmission with low loss, but the high technical requirements, large investment of 1550 nm transfer mode, can highly guarantee the front room, main level of the C/N, CTB and CSO three key technical indicators, using point-to-point, two-way mutual backup mode of transmission with high reliability, high ensures total front end to the various front-end, spectral platform transmission quality and zero interruption rate; Secondary transmission adopts the transmission loss is opposite bigger, low cost, low technical content of 1310 nm transfer mode, USES the star of the point-to-point transmission combined with tree structure, not only solved the author of the early capital pressure, and provides a relatively.In this paper, in the process of research, each of Xinyang city road, every village cable routing has carried on the detailed investigation and measurement; Existing resources of cable Xinyang, Henan branch company has carried on the detailed understanding, mastering and use; In line with the resource conservation and reasonable utilization of resources, the concept of sustainable development, elaborate design, repeated demonstration, formulate a set of practical and good operability solution; Satisfy the cable Xinyang, Henan branch to the requirements for the development of business, and leave enough space for sustainable development, to ensure the cable over the next five to ten years in Henan province to the expansion of business needs. In the paper the process of formation, for cable xinyang, henanbranch company has accumulated a large number of first-hand information network, at the same time, through the writing process of the scheme, for the unit to cultivate a batch of can have optical fiber network design.