阐释WDM的概念,什么是CWDM,什么是DWDM,并写出WDM中的两种重要器件。
阐释WDM的概念,什么是CWDM,什么是DWDM,并写出WDM中的两种重要器件。
相关考题:
Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?() A. optical technology for transmitting up to 32 channels over multiple fiber strandsB. optical technology for transmitting up to 16 channels over multiple fiber strandsC. a WDM system that is compatible with EDFA technologyD. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?()A、optical technology for transmitting up to 32 channels over multiple fiber strandsB、optical technology for transmitting up to 16 channels over multiple fiber strandsC、a WDM system that is compatible with EDFA technologyD、a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
根据《YD/T5166-2009本地网光缆波分复用传输系统工程设计规范》,本地WDM传输系统采用的技术包括DWDM和CWDM,其中CWDM传输系统的光通道数量可分为:()A、4通道B、8通道C、16通道D、32通道
在中兴DWDM系统中,复位NCP不会影响业务光通道,理由如下()。A、主光通道业务和监控通道在DWDM的独立设计B、WDM系统的业务通道目前产品没有使用光交叉C、在WDM系统中NCP的角色只是对业务光通道进行监控和数据采集,不能对业务光通道进行任何操作D、由于WDM设备上各单板保留有相应的数据,复位NCP板不影响其他单板的数据,所以业务光通道不受影响
下面关于CWDM与DWDM说法中哪个是错误的()A、CWDM的光纤衰耗平坦度低于DWDMB、CWDM的无电中继传输距离小于DWDMC、CWDM的单波最高传输速率为2.5G,低于DWDMD、CWDM的通道间隔小于DWDM
判断题WDM系统分为密集波分复用(DWDM)系统和粗波分复用(CWDM)系统。A对B错