What is DWDM (dense wavelength division multiplexing)?
What is DWDM technology and what are the components that comprise it?
- The following section gives an overview of the DWDM technology and the components that comprise DWDM. Dense wavelength division multiplexing (DWDM) is a fiber-optic transmission technique. It involves the process of multiplexing many different wavelength signals onto a single fiber.
What is a terminal multiplexer (DWDM)?
- DWDM Terminal Multiplexer: This device contains a one wavelength converting transponder for each wavelength carried. It receives an input optical signal, converts it to an electrical signal and then retransmits it as an optical signal (a process abbreviated as O/E/O) using a 1550 nm laser beam.
What is the wavelength selectivity of a demultiplexer?
- Therefore, the demultiplexer must provide the wavelength selectivity of the receiver in the WDM system. WDM systems are divided into three different wavelength patterns: normal (WDM), coarse (CWDM) and dense (DWDM). Normal WDM (sometimes called BWDM) uses the two normal wavelengths 1310 and 1550 on one fiber.
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