دانلود رایگان مقاله انگلیسی اندازه گیری نرخ خطای بیتی شبکه فیبر نوری از طریق تجزیه و تحلیل اترنت - IEEE 2017

Abstract

This paper describes the end-to-end performance of single mode Fiber Optic Network (FON), implemented for Unmanned Surveillance System (USS) application for the detection and tracking of land and sea based moving targets. Optical fibers are widely in fiber optic communications which permits transmission over longer distances and at higher bandwidths (data rates) than other forms of communication. Bit Error Rate (BER) is the ultimate key index parameter in assessing the FON for transmission of digital data from one location to another location. In this paper, in addition to BER, throughput and RFC 2544 testing were also performed over the FON using dual port VeEX ethernet analyzers. Both the fiber and copper ports of ethernet analyzers were exercised for obtaining the performance metric parameters of FON. Apart from BER measurements using ethernet analyzers, Optical Time Domain Reflectometer (OTDR) has also been used for checking the optical signal loss over FON. The performance analysis of BER at different data rates and the factors affecting BER are also discussed in this paper.

V. RESULTS AND CONCLUSIONS

Through the BER and throughput testing using fiber as well as copper ports, it was observed that as the bandwidth increases, the BER decreases as tabulated in Table.1 and 2. It was also established that the results of BER performance with fiber port is much better than copper port testing. For higher data rates, the optical interface provides better transmit and receive utilization than the electrical interface. The acquired graphs of % utilization of throughput, latency, jitter and frame loss of both the fiber and copper ports testing under RFC 2544 validation with 100 Mbps traffic bandwidth are depicted in fig.14 to 17.From the above graphs, it was observed that the % utilization of throughput is relatively better in the case of fiber port testing when compared to copper port testing. Similarly the latency in the case of fiber port testing for variation in frame size from 128 bytes to 1518 bytes resulted from 12.98 μs to 24.1 μs. But the latency in the counter part copper port testing resulted from 84.9 μs to 640.98 μs for the same span of frame size. Correspondingly, from the graphs of fig.21 & 22, it was observed that the jitter variation and frame loss values are negligible in the case of fiber port testing. In the copper port testing, the jitter value resulted as 0.32 μs for the frame size varied from 128 bytes to 1518 bytes and the frame loss resulted as approximately 52 μs. Hence, the end to end performance testing of fiber optic network with ethernet analyzers using fiber port testing yielded much better performance than copper port testing.