Hot backup system based on data flow multiplexing optical transmitters and optical amplifiers

Abstract

The invention relates to a hot backup system based on data flow multiplexing optical transmitters and optical amplifiers, wherein two output ends of the master / standby data flow multiplexing optical transmitters are separately connected with the input ends of the master / standby optical amplifiers through a second optical divider, so that all signals sent by the master / standby data flow multiplexing optical transmitters can be received by the master / standby optical amplifiers; the output ends of the master / standby optical amplifiers are connected with the input end of a first optical divider; network management controllers of the master / standby data flow multiplexing optical transmitters mutually monitor working state parameters of optical modules of the optical path data flow multiplexing optical transmitters at the opposite side in real time, and send the monitored parameters to a network manager; and, when the master data flow multiplexing optical transmitter or one optical amplifier cannot normally work, the network manager cuts off the failed master data flow multiplexing optical transmitter according to a switching control strategy, and simultaneously, turns on the standby channel data flow multiplexing optical transmitter. By means of the hot backup system disclosed by the invention, signal interruption is avoided; and furthermore, users cannot feel switching.

Description

technical field [0001] The invention relates to the technical field of optical fiber broadband access network, in particular to a hot backup system based on data stream multiplexing optical transmitter and optical amplifier. Background technique [0002] The traditional radio and television network modulates the digital TV broadcast signal and VOD on-demand streaming signal through QAM and IPQAM, and then performs optical modulation to 1550nm wavelength, and after amplifying to a certain optical power, it is connected with the 1490 / 1310nm wavelength output by PONOLT for data transmission. After multiplexing, enter the home through optical passive way. Although the fiber-to-the-home has been realized, the transmission method still cannot get rid of the modulation and demodulation technology, so there are the following problems: affected by the space wireless channel, the actual channel number is far less than the planned channel number; because the planned bandwidth is 1000M,...

AI Technical Summary

Problems solved by technology

Although the fiber-to-the-home has been realized, the transmission method still cannot get rid of the modulation and demodulation technology, so there are the following problems: affected by the space wireless channel, the actual channel number is far less than the planned channel number; because the planned bandwidth is 1000M, the later When developing towards high-definition or 3D TV, the bandwidth requirements cannot be met; below the optical receiver is the cable network, and the radio frequency index has a greater impact

The advantage is that it breaks away from the traditional modulation and demodulation technology, and there is no problem of frequency point interference and maintenance of radio frequency indicators. However, because IPTV has no broadcast bandwidth, broadcast TV viewing and listening are all realized by unicast or multicast technology. If there is not enough Home unicast bandwidth and access network replication points are difficult to meet the full coverage and on-demand of future high-definition and ultra-high-definition video streams

Images