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XCTD作为深海探测的一种最为重要的仪器,是深海水文数据获取的重要手段,但传统的金属漆包线信道存在一些难以解决的技术问题,成为XCTD发展的主要瓶颈。针对这一问题,本文提出采用单模光纤作为XCTD的传输信道。本文首先对使用漆包线作为传输信道所面临的难题进行了简要的分析;其次,分析了单模光纤技术优势;最后,针对XCTD工作环境中海水温度变化对光纤传输信道带来的影响进行了理论研究和实验验证,实验结果表明,单模光纤信道在海水介质及0~20°海温变化下,以10 MB/S的传输速率传输数据时误码率为0,且损耗变化几乎可以忽略,大大提高了信号传输的速率和传输稳定性,实验结果说明采用单模光纤作为XCTD的传输信道具有一定的可行性。
As one of the most important instruments for deep sea exploration, XCTD is an important means of acquiring deep-sea hydrological data. However, the traditional metal enameled channel has some technical problems that are difficult to be solved and has become a major bottleneck in the development of XCTD. In response to this problem, this paper proposes the use of single-mode optical fiber as the transmission channel of XCTD. In the first place, we analyzed the advantages of single-mode fiber technology. Finally, the influence of seawater temperature change in XCTD working environment on the optical fiber transmission channel was theoretically studied The experimental results show that the single-mode optical fiber channel with bit error rate of 0 and transmission loss of 10 MB / s at seawater medium and 0 ~ 20 ° sea-temperature change is almost negligible, The signal transmission rate and the transmission stability are improved. The experimental results show that it is feasible to use single-mode fiber as the transmission channel of XCTD.