Intro to DWDM

Dense Wavelength Division Multiplexing (DWDM) delivers data on an optical fiber system. Each data segment is carried at the same time on its own separate light wavelength. DWDM can deliver up to 80 separate channels of data into a single stream of light transmitted over an optical fiber cable. Each channel can carry from 2.5 Gbps (billion bits per second) up to 200 Gbps by the optical fiber system. DWDM is a form or type of Wave Division Multiplexing (WDM).

Since each channel is translated back into the original source at the end of the transmission, different data formats can be transmitted at different data rates simultaneously. For example, Synchronous Optical Network Data (SONET) and asynchronous transfer mode (ATM) data can all be traveling simultaneously within the optical fiber.

Technology Of The Future

DWDM solves the problem of exhausted fiber capacity. DWDM will soon be the technology of choice in the all-optical networks of the future.

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