Dwdm Of The Future
The telecom industry is moving quickly to develop 100G DWDM optical network transport. In this expert lesson, optical networking expert Eve Griliches looks at the forces driving first-generation adoption, standards efforts that are under way, and network operators' requirements for high-speed optical network equipment. Recent Blog Posts. DWDM stands for Dense Wavelength Division Multiplexing, which is a complex way of saying that, since photons do not interact with one another (at least not much) different signals on different wavelengths of light can be combined onto a single fiber, transmitted to the other end, separated and detected independently.
HistoryThe telephone industry developed a technology called Time-Division Multiplexing, TDM, which allows multiple conversations to share one wire by giving each conversation its own short time period to use the wire. SDH is a technical standard that allows TDM to be used for data.More CapacityTDM was designed for wires, and there are limits to how fast the data stream can be sent. DWDM was designed for optical cable, and sends multiple data streams simultaneously by splitting the streams into different wavelengths of light.
Dwdm Of The Future Meaning
DWDM is at least 32 times more efficient than TDM. DWDM is an enhanced version of Wavelength Division Multiplexing, WDM, but the terms may be used interchangeably.