It is conventional TDM based and traffic is dropped and collected in SDH and rerouted towards desired point destination in form of electrical or light signals. Let’s say in microwave or fiber of point to point terms, SDH equipment is used when you need to connect several site/clients towards star topology.
DWDM technology provides very high bandwidth long haul inter-connect links. They can support fully configurable cross connect features. Full featured DWDM equipment can comprise the same range of cards as SDH. DWDM is multiple signal transmit over a single fiber called DWDM or Different frequencies (colors/wavelengths/lambdas) for different connections over the single fibre. Product CategoryĭWDM are technologies that improve the capability of optical cable in carrying data by multiplexing many channels of wavelengths, and SDH are technologies that are used as a buffer interfacing layer for higher layers access the huge capability of Optical transmission system. Although DWDM EDFA is more expensive than SDH EDFA from the diagram, can we say that the cost we need for DWDM system application is more expensive? No, the answer is negative. In fact, it is the specific infrastructure not only in DWDM system but also SDH networks. Can be installed in various systems easily according to users requirements, such as SDH frame, CATV machine box and DWDM system chassis. As we know, the fiber optic module is integrated EDFA, it is divided into optoelectronic integrated EDFA and optical gain module, which has the characteristics of small size, low power consumption and easy to use.
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