The Research Of The Burst-Mode Signal Detection Technology In Passive Optical Network System

Since 2008, the optical fiber market has transferred the status "All we hear is words, but there is no action." into widely application. However, FTTH (fiber to the home) as an ideal access form has a lot of problems when it is used in large-scale commercialization application. Now, the PON system is the best solution for FTTH. If the key PON technologies could be solved, it will take a big step. In the paper, we introduce "The burst-mode receiver technology in PON system" in such an environment.In the second chapter, we talk about the PON system briefly, and describe its physical topology and frame structure. At the last part of this chaper, we point out a technical problem——how to detect the burst-mode signal. After that, in the third chapter, we describe the current common technologies for burst-mode signal detection. After comparison, we find that the DC-coupled feed-back detection technology is a widely recognized solution. In the fourth Chapter, we accomplishe a blue print for the burst-mode optical receiver, including the optical detector, the preamplifier, the threshold control circuit, the limiting amplifier, the reset circuit, etc. In allusion to a series of problems existing in every module, we introduce many new methods to improve the program and simulate the circuits. In the fifth Chapter, we propose an equivalent model for burst-mode signal receiver to analyze the noise in the pre-amplifier module, the doubled noise and the sensitivity of the entire module. After analysis, we discuss the detail calculation methods. At last, we introduce a specific realization in EPON system, including how to choose pre-amplifier, limiting amplifier and how to design the PCB broad. In the last chaper, we conclude the main contents and new ideas in the paper.At present, there is no burst-mode optical receiver manufacturer in China. Howerer the United States, Japan, South Korea and other countries already have products available in this area. In the rapid development time of information industry, we have no time to waste. So a good performance burst-mode signal detection module will be having a good market.