DWDM

Perfect for carriers and businesses looking to solve the “fiber exhaust” problem and is expected to be the central technology in the all-optical networks of the future.

 

What is DWDM?

 

Dense Wavelength Division Multiplexing (DWDM) an optical technology used to increase bandwidth over existing fiber optic backbones.

 

DWDM works by combining and transmitting multiple signals simultaneously at different wavelengths on the same fiber. In effect, one fiber is transformed into multiple virtual fibers. So, if you were to multiplex eight OC-48 signals into one fiber, you would increase the carrying capacity of that fiber from 2.5 Gb/s to 20 Gb/s. Currently, because of DWDM, single fibers have been able to transmit data at speeds up to 400Gb/s.

 

A key advantage to DWDM is that it’s protocol- and bit-rate-independent. DWDM-based networks can transmit data in IP, ATM, SONET /SDH, and Ethernet, and handle bit rates between 100 Mb/s and 100 Gb/s. Therefore, DWDM-based networks can carry different types of traffic at different speeds over an optical channel.

 

When Would You Use DWDM?

 

Because DWDM is the technology of choice for transporting extremely large amounts of data traffic over metro or long distances in telecom networks. Optical networking and especially the use of DWDM technology has proven to be the optimal way of combining cost efficient transport with advanced functionality, which can cope with the bandwidth explosion from the access network.

 

Benefits of DWDM

 

  • Protocol and Bit-Rate Independent: “DWDM-based networks can transmit data in IP, ATM, SONET /SDH, and Ethernet, and handle bit rates between 100 Mb/s and 2.5 Gb/s. Therefore, DWDM-based networks can carry different types of traffic at different speeds over an optical channel.

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