Dense Wavelength Division Multiplexing

The technology of combining a number of optical wavelengths and then transmitting the same through a single fibre is called wavelength division multiplexing (WDM). Conceptually, the technology is similar to that of frequency division multiplexing (FDM) used in analogue transmission. Dense wavelength division multiplexing (DWDM) is anew born multiplexing technology in the fibre optic transmission, bringing about a revolution in the bit rate carrying capacity over a single fibre. The emergent of DWDM system is one of the important phenomena in development of optic fibre transmission. This article gives introduction of DWDM technology. The demand of bandwidth is increasing day by day, especially for data traffic. Service providers are required to provide the bandwidth dynamically and in shortest possible time. This can only be done by DWDM. In future advanced DWDM components will be available. Thus, it will be possible to manage the optical signal dynamically, which will allow more flexibility to the service providers..
Dense Wavelength Division Multiplexing

There has always been a technological talent to fulfill the constant need to extent the capacity of communication channel and DWDM (Dense Wavelength Division Multiplexing) has dramatically brought about an explosive enlargement of the capacity of fiber network, solving the problem of increasing traffic demand most economically.DWDM is a technique that makes possible transmission of multiple discrete wavelengths carrying data rate as high as fiber plant allows over a single fiber unidirectionally or bidirectionally. It is an advanced type of WDM in which the optical channels are more closely spaced than WDM.
Dense wavelength division multiplexing

.pdf   division multiplexing.pdf (Size: 156 KB / Downloads: 4)


Dense wavelength division multiplexing (DWDM) is a fiber-optic
transmission technique that employs light wavelengths to transmit data
parallel-by-bit or serial-by-character.


The role of scalable DWDM systems in enabling service providers to
accommodate consumer demand for ever-increasing amounts of
bandwidth is important. 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.

Fundamentals of DWDM Technology

The emergence of DWDM is one of the most recent and important
phenomena in the development of fiber optic transmission technology.
The functions and components of a DWDM system, including the
enabling technologies, and a description of the operation of a DWDM
system are discussed below.

Development of DWDM Technology

Early WDM began in the late 1980s using the two widely spaced
wavelengths in the 1310 nm and 1550 nm (or 850 nm and 1310 nm)
regions, sometimes called wideband WDM. Figure below shows an
example of this simple form of WDM. One of the fiber pair is used to
transmit and the other is used to receive. This is the most efficient
arrangement and the one most found in DWDM systems.

The Challenges of Today's Telecommunications

To understand the importance of DWDM and optical networking, these
capabilities must be discussed in the context of the challenges faced by
the telecommunications industry, and, in particular, service providers.
Forecasts of the amount of bandwidth capacity needed for networks
were calculated on the presumption that a given individual would only
use network bandwidth six minutes of each hour. These formulas did
not factor in the amount of traffic generated by Internet access (300
percent growth per year), faxes, multiple phone lines, modems,
teleconferencing, and data and video transmission. Had these factors
been included, a far different estimate would have emerged. In fact,
today many people use the bandwidth equivalent of 180 minutes or
more each hour.
to get information about the topic "dense wavelength division multiplexing slides" full report ppt and related topic refer the page link bellow

Important Note..!

If you are not satisfied with above reply ,..Please


So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: multiplexing advantages, mode 1 time division multiplexing diagram, a dense wavelength division multiplexing optical network systems, what is dense wavelength division mult, technical seminar on wavelength division multiplexing, matlab code of wavelength compensation code, ppt wavelength compensation in underwater,

Quick Reply
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  dense wavelength division multiplexing full report project reporter 3 4,533 16-06-2014, 07:00 PM
Last Post: seminar report asees
Music Optical Networking and Dense Wavelength Division Multiplexing Computer Science Clay 1 1,862 24-12-2012, 11:21 AM
Last Post: seminar details
  Orthogonal Frequency Division Multiplexing Frequency Offset Correction full report project topics 5 4,419 19-08-2011, 12:00 AM
Last Post: amadkki
Tongue Code Division Duplexing Computer Science Clay 6 4,828 16-08-2011, 09:56 AM
Last Post: seminar addict
  DS-CDMA-DIRECT SEQUENCE CODE DIVISION MULTIPLE ACCESS computer science topics 1 1,986 15-03-2011, 12:19 PM
Last Post: seminar class
  CWDM Coarse Wavelength Division Multiplexing full report project report tiger 1 1,938 26-10-2010, 01:36 PM
Last Post: project report helper
  CODE DIVISION DUPLEXING computer science crazy 2 1,866 14-07-2010, 04:55 PM
Last Post: sonalgupta
  orthogonal frequency division multiplexing full report computer science technology 2 2,962 26-04-2010, 11:55 AM
Last Post: project topics
  Wavelength Division Multiplexing (WDM) electronics seminars 0 1,505 30-11-2009, 03:49 PM
Last Post: electronics seminars
  Inverse Multiplexing over ATM electronics seminars 1 1,750 16-11-2009, 08:02 PM
Last Post: computer science crazy

Forum Jump: