Introduction to dwdm technology ol088401 preface this introduction to dwdm technology is intended for readers who want to gain a basic understanding of dense wavelength division multiplexing dwdm technology and its role in metropolitan area networks mans. The basics of wavelength division multiplexing, wdm. If so, share your ppt presentation slides online with. In fiber optic mode, multiple optical carrier signals are multiplexed into an optical fiber by using different wavelengths. So each fiber have a set of parallel optical channels each using slightly different light wavelengths. By ayodeji morakinyo 1bimonthly presentation dense wavelength division multiplexing dwdm at the speed of ideas 2. View and download powerpoint presentations on wavelength division multiplexing ppt. Wavelength signals are multiplexed into a bus waveguide by converting to different modes using the cascaded adcs. Ppt wavelength division multiplexing wdm in optical networks. It increases bandwidth by allowing different data streams to be sent simultaneously over a single optical fiber network. This dense wavelength division multiplexing dwdm ppt template is available to download in two different color themes. Using dwdm, up to 80 and theoretically more separate wavelengths or channels of data can be multiplexed into a lightstream. Osa siliconbased wavelength division multiplexer by.
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. Wavelengthdivision multiplexing wdm is a method of combining multiple signals on laser beams at various infared ir wavelengths for transmission along fiber optic media. 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. View wavelength division multiplexing research papers on academia. 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 selective switches for roadm applications. Find out information about dense wavelength division multiplexing.
Wavelength division multiplexing wdm systems get around the speed limitation of electronics by using multiple wavelengths of light simultaneously. Wavelength division multiplexing light has different wavelength colors. Also explore the seminar topics paper on optical networking and dense wavelength division multiplexing with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year computer science engineering. Wavelength division multiplexing research papers academia. Bandwidth utilization is the wise use of available bandwidth to achieve specific goalsspecific goals. This presentation is just a basic explanation of wavelength division multiplexing. You can easily resize the graphics without worrying about its visual quality. Many fiber optic networks use wavelength division multiplexing to share a single fiber for multiple channels by using different wavelengths. These multi wavelength channels are usually spaced about 50 to 100 ghz apart. Wavelength division multiplexing wdm in optical networks. Wavelength division multiplexing, wdm, has long been the technology of choice for transporting large amounts of data between sites. The basics of wavelength division multiplexing, wdm smartoptics. Established in 1982 and celebrating its 38th year as an industry leader, multicom is a manufacturer and fullline stocking distributor for endto. Also explore the seminar topics paper on optical networking and dense wavelength division multiplexing with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee.
Ppt dense wavelength division multiplexing dwdm powerpoint presentation free to download id. And with the proper fiber cable, the two can be done simultaneously. We design the wdms with conventional and tapered adcs and analyze the performance in terms of insertion loss, crosstalk, and fabrication. 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. Ppt dense wavelength division multiplexing dwdm powerpoint. 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. A multiplexing technique by which multiple data signals can be transmitted over a common communication channel in different time slots is known as time division multiplexing tdm. Ppt wavelength division multiplexing wdm in optical networks powerpoint presentation free to download id. 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. 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. This is an analog multiplexing technique and is done conceptually in the same manner as fdm but uses light as signals.
Osa optical switch compatible with wavelength division. Optical fdm is usually called wavelength division multiplexing. The two major types of wavelength division multiplexer are coarse wavelength division multiplexer cwdm and dense wavelength division multiplexer dwdm. 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. 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. Wavelength division multiplexing seminar report, ppt. Sonet synchronous optical network and dwdm to extend transmission. What is the difference between wavelength division and. This predesigned dense wavelength division multiplexing ppt consists of hd and vectorbased graphics.
Overview this tutorial addresses the importance of scalable dwdm systems in enabling. Wavelength division multiplexing wdm one of the most promising concepts for high capacity communication systems is wavelength division multiplexing wdm. Wavelength division multiplexing wavelength division multiplexing wdm is designed to use the highdatarate capability of fiberoptic cable. The nominal wavelengths range from 10 nm to 1610 nm. Coarse wavelength division multiplexing cwdm, itu standard g.
It allows the division of the overall time domain into various fixed length time slots. This will in future permit more easy service to the users. It increases bandwidth by using different colors of light, each considered its own channel, to transmit and receive signals at the same time. It is mostly used for optical fiber communications to transmit data in several or even many channels with slightly different wavelengths. This technique enables bidirectional communications over one strand of fiber, as well as multiplication of capacity. Different wdm techniques and their uses in optical communication. Pdf wavelengthselective switches for roadm applications. 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. Transmission product manager huawei technologies co. 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. Wavelength division multiplexing linkedin slideshare. We design the wdms with conventional and tapered adcs and analyze the performance in terms of insertion loss, crosstalk, and fabrication tolerance. Today the demand of bandwidth for telecommunication networks are increasing rapidly world widely with the increase in number of users over networks. Each channel contains a tdm time division multiplex signal.
Wdm wavelengthdivision multiplexing wdm is a technology which multiplexes a number of optical carriers signals onto a single optical fiber by using different. Optical fdm is usually called wavelength division multiplexing wdm and utilizes separate wavelengths. Wavelength division multiplexing systems can combine signals with multiplexing and split them apart with a demultiplexer. Wdm wavelength division multiplexing importante equipos.
Wavelength division multiplexing wdm is a technique modulating various data streams, i. 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. Optical networking and dense wavelength division multiplexing. Bandwidth utilization is the wise use of available bandwidth to achieve. View and download powerpoint presentations on time division multiplexing ppt. Aug 21, 2014 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. Wavelengthsensitive filters, the ir analog of visiblelight color filters, are used at the receiving end. 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. Ee4512 analog and digital communications chapter 7 tdm is used for baseband and fdm for bandpass data.
Wavelengthdivision multiplexing article about wavelength. As a proof of concept, asymmetric directional couplers are employed to construct the mode multiplexers and demultiplexers, balanced machzehnder interferometer is utilized to. 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. Wavelength division multiplexing free download as powerpoint presentation. Dense wavelength division multiplexing dwdm columbia ee. Each channel can be used to transmit data at the few gbps afforded by todays electronic speeds, realizing net.
Wavelength division multiplexing wdm devices features. Wavelengthdivision multiplexing synchronous timedivision multiplexing 6. Each laser is modulated by an independent set of signals. Wavelength division multiplexing ppt download slideplayer. Wavelength division multiplexing wdm, two or more optical signals having different waveleng ths are combined and simultaneously transmitted in the sa me direction over an optical fiber. We propose a kind of wavelength division multiplexer wdm based on asymmetric directional couplers adcs. Dense wavelength division multiplexing linkedin slideshare. This allows a single transmission medium such as a cable or optical fiber to be shared by multiple independent. In telecommunications, frequencydivision multiplexing fdm is a technique by which the total bandwidth available in a communication medium is divided into a series of nonoverlapping frequency bands, each of which is used to carry a separate signal.
Download dense wavelength division multiplexing ece seminar report. The best part is, this is available in two color themes. Dense wavelength division multiplexing dwdm is a technology that puts data from different sources together on an optical fiber, with each signal carried at the same time on its own separate light wavelength. Multiplexing references frequencydivision multiplexing. Wavelength division multiplexing wdm enables multiple communication links to use a common transmission fiber by transmitting a multitude of different wavelengths at the same time.
This work is only possible with the dense wavelength division multiplex mechanism because it is capable of managing the optic signals in the dynamic way. Find powerpoint presentations and slides using the power of, find free presentations research about wavelength division multiplexing ppt. This technique enables bidirectional communications over one strand of fiber, as well as multiplication of capacity the term wdm is commonly applied. The sharing of the total available passband of a transmission medium in the optical portion of the electromagnetic spectrum by assigning individual. The wavelength tolerance for the transmitters is fairly large, e. Download dense wavelength division multiplexing ece. It involves the process of multiplexing many different wavelength signals onto a single fiber. Ppt wavelength division multiplexing wdm in optical.
Foa lecture 31 wavelength division multiplexing wdm. Wavelength division multiplexing wdm is similar to frequency division multiplexing fdm but referencing the wavelength of light to the. Tech ece 020204016 wdm wavelength division multiplexing 2. Dense wavelength division multiplexing dwdm is a fiberoptic transmission technique that employs light wavelengths to transmit data parallel bybit. Dense wavelength division multiplexing ece seminar report. 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. 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. 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. Wavelength division multiplexing approach is used to route signals on the man. It delivers multiplexing of up to 16 channels on a single optical fiber. This chapter describes wdm technology, including options such as coarse and dense wdm defined by standards such as itut recommendations g. 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.
We are able to begin to see figure 2 below, an optical prism represents a handy method to understand a muxdemux function. Rp photonics encyclopedia wavelength division multiplexing. Wavelengthdivision multiplexing 1 wavelengthdivision multiplexing 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 colours of laser light. 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. Find powerpoint presentations and slides using the power of, find free presentations research about time division multiplexing ppt. 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. Efficiency can be achieved byefficiency can be achieved by multiplexing. Definition 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. Required for loading and downloading wavelengths from the network. Each communication channel is allocated to a different frequency and multiplexed onto a single fiber. Coarse wdm refers to multiplexing of less number of signals on a single optical fiber.
A rapid tunable download powerpoint presentations on time division multiplexing ppt. Wavelength division multiplexing wavelength division. Wavelength division multiplexing seminar report, ppt, pdf for. What is dense wavelength division multiplexing dwdm. Dense wavelength division multiplexing article about. 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. Optical fiber wavelength division multiplexing article pdf available in ieee aerospace and electronic systems magazine 188. The adobe flash plugin is needed to view this content. From wavelength division multiplexing to passive optical networking dr. As a proof of concept, asymmetric directional couplers are employed to construct the mode multiplexers and demultiplexers, balanced machzehnder interferometer. Dense wavelength division multiplexing article about dense. Wavelength division multiplexing wdm in optical networks is the property of its rightful owner. Explore optical networking and dense wavelength division multiplexing with free download of seminar report and ppt in pdf and doc format. Wavelengthdivision multiplexing wdm enables multiple communication links to use a common transmission fiber by transmitting a multitude of different wavelengths at the same time.
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