DWDM technology all set to uplift telecom scenario

HYDERABAD: Bharat Sanchar Nigam Ltd. is all set to introduce dense wavelength

division multiplexing (DWDM) in the state of AP for faster and easier

telecommunication. "In the first phase of deployment, which has already

begun, we are going to deploy the DWDM technology to connect Vijaywada,

Visakhapatnam and Hyderabad with major centers in the country. Once the system

is in place as many as nine lakh calls can be made simultaneously," said KM

Doraiswamy, General Manager, Southern Telecom projects for BSNL.

Once the technology is in place the lines would no longer be busy and the

connection will be a lot faster and easier. Dense wavelength division

multiplexing is a fiber-optic transmission technique that employs light

wavelengths to transmit data parallel-by-bit or serial-by-character.

A technology like DWDM enables service providers to accommodate consumer

demand for ever-increasing amounts of bandwidth. DWDM is discussed as a crucial

component of optical networks that allows the transmission of e-mail, video,

multimedia, data, and voice–carried in Internet protocol (IP), asynchronous

transfer mode (ATM), and synchronous optical network/synchronous digital

hierarchy (SONET/SDH), respectively, over the optical layer.

The technology is expected to thrive in carrier applications, as the optical

network becomes commonplace. Interexchange Carriers (IXCs) and Incumbent Local

Exchange Carriers (ILECs) will use DWDM technology to satisfy the growing amount

of network traffic attributed to ISPs.

As the future of carrier networks continues down the light and fiber path,

next generation products and technology will continue to push towards a pure

optical network, in which DWDM systems will maintain a long product life.