Wdm concept and components wavelength division multiplexing. The optical fiber data rate is higher than the data rate of metallic transmission cable, but using a fiberoptic cable for a single line wastes the available bandwidth. Coarse wdm refers to multiplexing of less number of signals on a single optical fiber. Wavelength division multiplexing, wdm, has long been the technology of choice for transporting large amounts of data between sites. Overview this tutorial addresses the importance of scalable dwdm systems in enabling. What is dwdm dense wavelength division multiplexing dwdm is a technology that uses more than eight multiplexed signals to transmit many wavelengths of light simultaneously over a single optical fiber. It increases bandwidth by allowing different data streams to be sent simultaneously over a. It is mostly used for optical fiber communications to transmit data in several or even many channels with slightly different wavelengths. Cwdm coarse wavelength division multiplexing from four to 8 wavelengths per fiber, sometimes more. Wavelength division multiplexing approach is used to route signals on the man.
Overview this tutorial addresses the importance of. Distance of several thousand kilometres with amplification and. Designed for short to mediumhaul networks regional and metropolitan area. Wavelength division multiplexing wdm is an analog technique, in which many data streams of different wavelengths are transmitted in the light spectrum. Ppt wavelength division multiplexing wdm in optical networks.
Wdm wavelengthdivision multiplexing is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths i. It delivers multiplexing of up to 16 channels on a single optical fiber. In fiberoptic communications, wavelengthdivision multiplexing wdm is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths i. Bandwidth utilization is the wise use of available bandwidth to achieve specific goalsspecific goals. Each optical channel can carry any transmission format different asynchronous bit rates, analog or digital scalability buy and install equipment for additional demand as needed wavelength routing and. A main part of the contribution is dedicated to a presentation of the hpon configurator. The first of these is the need for fast wavelength tuning.
In fiber optic mode, multiple optical carrier signals are multiplexed into an optical fiber by using different wavelengths. Established in 1982 and celebrating its 38th year as an industry leader, multicom is a manufacturer and fullline stocking distributor for endtoend integration of communication solutions. In fiberoptic communications, wavelength division multiplexing wdm is a technology which multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths i. The basics of wavelength division multiplexing, wdm smartoptics. This mode occupies a very narrow spectrum making wavelength division multiplexing possible multimode laser spectrum. You can easily resize the graphics without worrying about its visual quality. Jan 30, 20 in fiberoptic communications wavelength division multiplexing wdm is a technology which multiplexes multiple optical carrier signals on a single optical fiber by using different colours of laser light to carry different signals. The basics of wavelength division multiplexing, wdm.
Dense wdm dwdm uses 200, 100, 50, or 25 ghz spacing. Optical fdm is usually called wavelength division multiplexing. Acoe312 multiplexing 2 3 key points to make efficient use of highspeed communication lines, some form of multiplexing is used. Possible solutions install more optical fiber increase tdm speed shorter pulses wavelength division multiplexing wdm optical code division multiplexingocdma 4 overview digital transceiver digital transceiver digital transceiver digital transceiver. If the wavelength increases, the frequency of the signal decreases. Dec 15, 2016 dense wavelength division multiplexing dwdm is wavelength division multiplexing wdm with typical channel spacing of 100 ghz for 40 channels and 50 ghz for 80 channels. Thr ough the application of its adv anced technology, ciena is setting a ne w standar d for bandwidth. May, 20 many fiber optic networks use wavelength division multiplexing to share a single fiber for multiple channels by using different wavelengths or colors of light for each channel.
A rapid tunable the network will utilize cienas cn 4200 rs flexselect advanced services platform, a wavelengthdivision multiplexing transport platform that the company says is designed for telco and cable service providers, large enterprises, research and education institutions, and government organizations to deploy in locations that require massive. Dense wavelength division multiplexing dwdm definition dense wavelength division multiplexing dwdm is a fiberoptic transmission technique that employs light wavelengths to transmit data parallelbybit or serialbycharacter. Each communication channel is allocated to a different frequency and multiplexed onto a single fiber. Is the set of technique that allow thesimultaneous transmission of multiple signals across a single data link. Wavelength division multiplexing research papers academia. Dense wavelength division multiplexing article about dense. Intensive needs for great bandwidth availability and data transmission capacity have boosted the use of wdm in telecommunication. Multiplexing timedivision multiplexing interleaves signals at slower rates frequencydivision multiplexing combines signals at different frequencies electronically to make composite signal wavelengthdivision multiplexing sends signals at different wavelengths like frequency multiplexing of radio spectrum 6. Pdf the utilization of the dwdmcwdm combination in the metro. Orthogonal frequencydivision multiplexing ofdm orthogonal frequencydivision multiplexing it is essentially identical to coded ofdm cofdm is a. In addition, there are two critical factors inside a wavelength division multiplexing wdm system which is the optical wavelength multiplexer mux, and also the demultiplexer demux. Wavelength division multiplexing wdm systems get around the speed limitation of electronics by using multiple wavelengths of light simultaneously. Feb 23, 2017 a video tutorial about wavelength division multiplexing created using powtoon.
Optical networking and dense wavelength division multiplexing. Wdm wavelength division multiplexing its the same as fdm. Zayo for 100g wavelength solutions, leveraging a new route between richmond and ashburn, virginia, which zayo recently enabled for dense wavelength division. What is dense wavelength division multiplexing dwdm. The two major types of wavelength division multiplexer are coarse wavelength division multiplexer cwdm and dense wavelength division multiplexer dwdm. Dense wavelength division multiplexing linkedin slideshare. It involves the process of multiplexing many different wavelength signals onto a single fiber.
Therefore, the combination of dwdmcwdm technologies can offer a great potential for solving. Dense wavelength division multiplexingdwdm full seminar. Cwdm course wavelength division multiplexingfig 4 if an application requires more than two bidirectional streams of data through one fiber, cwdm is the perfect solution. Dwdm dense wavelength division multiplexing a typical dwdm system supports eight or more wavelengths. This predesigned dense wavelength division multiplexing ppt consists of hd and vectorbased graphics. Mar 26, 2010 what is dwdm dense wavelength division multiplexing dwdm is a technology that uses more than eight multiplexed signals to transmit many wavelengths of light simultaneously over a single optical fiber. Cwdm course wavelength division multiplexing fig 4 if an application requires more than two bidirectional streams of data through one fiber, cwdm is the perfect solution. Foa lecture 31 wavelength division multiplexing wdm. A free powerpoint ppt presentation displayed as a flash slide show on id. We are able to begin to see figure 2 below, an optical prism represents a handy method to understand a muxdemux function. Ciena corporation, 920 e lkridge landing rd, linthicum, md 21090 phone. Optical fiber wavelength division multiplexing article pdf available in ieee aerospace and electronic systems magazine 188. Ee4512 analog and digital communications chapter 7 tdm is used for baseband and fdm for bandpass data.
Wavelength division multiplexing wdm in optical networks modeled as a graph coloring problem. Ppt orthogonal frequencydivision multiplexing powerpoint. Each channel contains a tdm time division multiplex signal. Wavelength division multiplexing systems can combine signals with multiplexing and split them apart with a demultiplexer. Wavelength division multiplexing ppt download slideplayer.
Optical fdm is usually called wavelength division multiplexing wdm and utilizes separate wavelengths. Capacity upgrade of existing fiber networks without adding fibers transparency. This blog covers an introduction to dwdm technology and dwdm system components. Wdm wavelengthdivision multiplexing wdm is a technology which multiplexes a number of optical carriers signals onto a single optical fiber by using different. Wavelength division multiplexing wdm is a method of combining multiple signals on laser beams at various infared ir wavelengths for transmission along fiber optic media. These multi wavelength channels are usually spaced about 50 to 100 ghz apart.
Wdm wavelength division multiplexing linktionary term. Wavelength division multiplexing and directional multiplexing. The best part is, this is available in two color themes. Ppt dense wavelength division multiplexing dwdm powerpoint. Ppt dense wavelength division multiplexing dwdm powerpoint presentation free to download id. Wavelengthdivision multiplexing article about wavelength. Wavelength division multiplexers wdms are used to combine light of different wavelengths into a single fiber. The adobe flash plugin is needed to view this content. Each laser is modulated by an independent set of signals. In these types of networks, additional applications drive the demand for. This is an analog multiplexing technique and is done conceptually in. In the case of the network using oxcs with the conversion, a lightpath can use different colors on different links.
Wavelength division multiplexing wdm one of the most promising concepts for high capacity communication systems is wavelength division multiplexing wdm. Developments in wavelength division multiple access. A wdm can also allow the system designer to remove, or add, a wavelength at a point and let the other wavelengths pass through. Wavelength division multiplexing seminar report, ppt. Download your full reports for dense wavelength division multiplexingdwdm. Explore wavelength division multiplexing with free download of seminar report and ppt in pdf and doc format. Wdm enables bidirectional communication as well as multiplication of signal capacity. Wavelength division multiplexing seminar report, ppt, pdf. Wavelengthsensitive filters, the ir analog of visiblelight color filters, are used at the receiving end. View wavelength division multiplexing research papers on academia.
This technique enables bidirectional communications over one strand of fiber, as well as multiplication of capacity. Wavelength division multiplexing wavelength division multiplexing wdm is designed to use the highdatarate capability of fiberoptic cable. Wavelength division multiplexing linkedin slideshare. Dense wavelength division multiplexing dwdm powerpoint. This dense wavelength division multiplexing dwdm ppt template is available to download in two different color themes.
Wavelengthdivision multiplexing wdm is a method of combining multiple signals on laser beams at various infared ir wavelengths for transmission along fiber optic media. It increases bandwidth by allowing different data streams to be sent simultaneously over a single optical fiber network. This technique enables bidirectional communications over one strand of fiber, as well as multiplication of capacity the term wdm is commonly applied to an optical. Bandwidth utilization is the wise use of available bandwidth to achieve. Ppt dwdm presentation powerpoint presentation, free download.
In that case the circulator is typically used with a wdm to route just the conflicting channel. Also explore the seminar topics paper on wavelength division multiplexing with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year electronics and telecommunication engineering or ece students for the year 2015 2016. Wdm could be divided into cwdm coarse wavelength division multiplexing and dwdm dense wavelength division multiplexing. And with the proper fiber cable, the two can be done simultaneously. Multiplexing allows several transmission sources to share a larger transmission capacity. Wavelength division multiplexing wdm is a technique modulating various data streams, i. Each optical channel can carry any transmission format different asynchronous bit rates, analog or digital scalability buy and install equipment for additional demand as needed wavelength. Zayo for 100g wavelength solutions, leveraging a new route between richmond and ashburn, virginia, which zayo recently enabled for dense wavelength division multiplexing dwdm capabilities, the company said. In fiberoptic communications wavelength division multiplexing wdm is a technology which multiplexes multiple optical carrier signals on a single optical fiber by using different colours of laser light to carry different signals. Wavelength division multiplexing wdm devices features.
Many fiber optic networks use wavelength division multiplexing to share a single fiber for multiple channels by using different wavelengths or colors of light for each channel. Wdm concepts and components a powerful aspect of an optical communication link is that many different wavelengths can be sent along the fibre simultaneously. Multiplexing techniques frequencydivision multiplexing fdm each channel occupies a fraction of the bandwidth of the link a channel is defined by its center frequency, and its bandwidth. Rp photonics encyclopedia wavelength division multiplexing. Like circulators, cwdm is a sm fiber based technology. Find powerpoint presentations and slides using the power of, find free presentations research about wavelength division multiplexing ppt. Wavelength division multiplexing wdm is similar to frequency division multiplexing fdm but referencing the wavelength of light to the. Dense wavelength division multiplexing dwdm is wavelength division multiplexing wdm with typical channel spacing of 100 ghz for 40 channels and 50 ghz for 80 channels. Afl company confidential wdm stands for wavelength division multiplexing wavelength division multiplexing is a method of combiningseparating multiple wavelengths of light intoout of a single strand of fiber each wavelength of light carries a different signal this can be accomplished using a variety of different. Each channel can be used to transmit data at the few gbps afforded by todays electronic speeds, realizing net. Frequency division multiplexing fdm time division multiplexing tdm.
Circulators generally get used when two networks or locations are being joined and they both use the same wavelength. Ppt wavelength division multiplexing wdm in optical. Wavelengthdivision multiplexing synchronous timedivision multiplexing 6. Dense wavelength division multiplexing dwdm is reserved for very close frequency spacing.
The technology of combining a number of wavelengths onto the same fibre is known as wavelengthdivision multiplexingor wdm. Wavelength division multiplexing seminar report, ppt, pdf for. Developments in wavelength division multiple access networking. Dense wavelength division multiplexing article about. Wavelength division multiplexing is a kind of frequency division multiplexing a technique where optical signals with different wavelengths are combined, transmitted together, and separated again. Pdf we present the basic principles of wdm and then introduce some characteristics of various wdm. An analog multiplexing technique to combine optical signal. The network will utilize cienas cn 4200 rs flexselect advanced services platform, a wavelength division multiplexing transport platform that the company says is designed for telco and cable service providers, large enterprises, research and education institutions, and government organizations to deploy in locations that require massive. Wavelength sensitive filters, the ir analog of visiblelight color filters, are used at the receiving end. Ppt wavelength division multiplexing wdm in optical networks powerpoint presentation free to download id.
Mod01 lec26 wavelength division multiplexed systems duration. Dense wavelength division multiplexing theory thank you what we will cover wdm overview optical fiber transmission characteristics key technologies of dwdm technical specifications background wdm tdm sdm pdh sdh dwdm 155m 622m 2. Efficiency can be achieved byefficiency can be achieved by multiplexing. The operation of each component is discussed individually and the whole structure of a fundamental dwdm system is shown at the end of this blog. So each fiber have a set of parallel optical channels each using slightly different light wavelengths.
64 547 836 1139 683 1308 1371 586 1064 752 593 889 1446 1547 1428 664 532 91 895 270 334 1158 1115 1033 691 429 571 59 1244 15 4 419 518 742 1598 25 353 1370 95 522 471 1001 549 603 763 709 1150 1251