声纳湿端数据远传DWDM光电交换模块设计

声纳的应用极其广泛，海洋渔业以及军事应用使得声纳技术得到了大力发展。声纳湿端数据传输的可靠性、实时性是声纳系统性能得到保障的前提。为此设计一用于声纳湿端数据远传的DWDM光电交换模块。在该模块中，使用以太网交换芯片和两个DWDM光模块对数据进行多路转发并实现光通路的冗余备份，提升了系统可靠性的同时使网络拓扑更为灵活。由于DWDM光模块可将电信号转换为波长可选定的光信号，故通过若干该模块协同使用，可实现多路光信号复用即同时传输多条声纳水下阵缆的数据。经实际开发与测试，该模块以太网业务性能指标符合设计需求，且该模块已在某声纳工程项目中得到了应用，并可为其他领域数据远传工程应用提供设计参考。

Design of DWDM Photoelectric Switching Module for Remote Data Transmission in Underwater Part of Sonar

Sonar is widely used, marine fisheries and military applications make sonar technology greatly developed. The real-time and reliability of the data transmission by the underwater part of sonar makes sonar system performance guaranteed.In this paper, a DWDM photoelectric switching module for data transmission in the underwater part of sonar was designed. In this module, the Ethernet switching chip and two DWDM optical modules was used to make sure that the data forwarded over multiple channels and the backup of the optical path realized which improved the system reliability and make the network topology more flexible.The DWDM optical module can convert the electrical signal to an optical signal whose wavelength can be selected. Through the use of a number of modules, multiplexing of optical signals can be realized in order that data transmitting by a number of underwater cables at the same time can be achieved. After development and testing, the Ethernet service performance indicators of this module meet the design requirements. The module has been used in a sonar project and can provide design reference for other engineering applications.