We experimentally demonstrate a channel-reuse bidirectional 10 Gb∕s∕λ long-reach dense wavelength-division multiplexing passive optical network(DWDM-PON) and an optical beat-noise-based automatic wavelength control method for a tunable laser used in a colorless optical network unit(where λ· wavelength). A55 km, bidirectional, 400 Gb/s(40 × 10 Gb∕s) capacity channel-reuse transmission with 100 GHz channel spacing is achieved. The transmission performance is also measured with different optical signal to Rayleigh backscattering noise ratios and different central wavelength shifts between upstream and downstream in the channel-reuse system.
随着大家对网络设备易用性要求的提高,人们越来越倾向于完全使用图形化界面的网管系统来完成对设备的管理和维护。而MIB(Management Information Base)作为网管系统管理网络设备的"中间件",其定义、设计的规范性和标准遵从性也变得越来越重要。传统的MIB测试工具效率低下,文中介绍了一种高效测试工具SimpleTester在MIB测试中的应用,详细介绍了SimpleTester的框架结构以及使用SimpleTester进行MIB测试的一般流程,并通过例子说明了SimpleTest-er能帮忙我们极大地提高测试效率和质量。
