FTTX Concepts and Applications [Gerd Keiser] on *FREE* shipping on qualifying offers. This book presents fundamental passive optical network. This book presents fundamental passive optical network (PON)concepts, providing you with the tools needed to understand,design, and build. FTTX concepts and applications / by Gerd Keiser. p. cm. — (Wiley series in telecommunications and signal processing) “A Wiley-Interscience publication.
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Applicatuons key passive components for PON applications include wavelength-selective couplers, optical power splitters, optical connectors, ftrx opti- cal splices. It was truly a pleasure to work with them. Thus, the ONU equipment must be environmentally rugged to withstand large temperature variations. Video overlay service to BPON subscribers.
The curve shows that the two low-loss regions of a standard G. Subsequently, the development of lasers that have extremely narrow spectral- emission widths allowed wavelengths to be spaced less than a nanometer apart. As a result, a network service provider can col- lect more revenues from FTTB networks and thus recover the installation costs sooner than for FTTH networks.
The service priority is given in terms of gere bandwidth, ranging from high to low priority, as Figure 7.
FTTX Concepts and Applications
It is an international jeiser operating within the United Nations system and is head- quartered in Geneva, Switzerland. As shown in Fig. Since a laser that is not temperature controlled typically exhibits a wavelength drift of 0. If active devices are used in the transmission path, they require electrical power to perform their functions.
This causes the pulse to spread out and is the basis of modal dis- persion. In terms of wave- length measured in micrometersthe energy in electron volts is given by 1. This application is given the designation FTTx. This can lead to errors in the interpretation ocncepts the signal that is received. In Chapter 10 we give more details on the use of such cables in conjunction with subducts for FTTP applications.
There its purpose is to provide an optical connection to the PON on the upstream side and to interface ieiser to the customer equipment on the other side.
For example, the GHz channels in the L-band would be at The choices have impacts on the initial instal- lation cost of a network and on the operational expense and complexity. Variation in the polarization states of an optical pulse as it passes through a fiber that has varying birefringence along its length.
The return link from the users to the central office employs a nm wavelength for combined voice and data traffic. Thus, it also has a high priority. The photodetector must have a high quantum efficiency to generate a large sig- nal power.
Examples of equipment in the central office include public telephone switches, video-on-demand servers, Internet protocol IP routers, Ethernet switches, and asynchronous transfer mode ATM switches. First, installing the power supply is easy and quick since it can be located next to the ONT, and typ- ically, the electric power outlet is close by.
Included concept such a package would be optical source modules, photodetection modules, the passive device cncepts combining and separating the individual wavelengths, digital clock and data recovery interfaces for data and voice, alarm detection and laser shutdown circuitry, and video receiver circuitry. An Instructor’s Manual presenting detailed solutions to all theproblems in the book is available from the Wiley applicahions.
The MHz- wide band ranging from 5 to 45 MHz is used to transmit information from the user back to the headend.
This ex- presses the power level P as a logarithmic ratio of P referred to 1 mW. The applications for G. To determine how many grants i.
Wiley-IEEE Press: FTTX Concepts and Applications – Gerd Keiser
cobcepts For sim- plicity, the word multiplexer is used as a general term to refer to both combining and separating functions, except when it is necessary to distinguish the two devices or functions. Technology, Applications, and Future Directions. The additional 3 bytes for each cell are overhead, which the OLT can program for various functions. The encapsulated payload can be up to bytes long.
This process thus builds up the photon density in the gain region until lasing occurs.
FTTX Concepts and Applications – Gerd Keiser – Google Books
The point at which the output has dropped to 50 percent of its low-frequency applicatiosn is called the 3-dB point. Thus, the available bandwidth is used more efficiently than in a contention-based network such as WiFi. The coaxial wires used in HFC networks allow the transport of broadband information over distances of several tens of kilometers.
In applicatins, the connec- tion speed to the customer decreases as the distance to the central office increases. As described in Section 7. Network architecture for Problems 8. Assume that there are two optical power threshold levels in the OLT receiver. Such a cable can be used for direct-burial or aerial-based outside plant applications. Wnd factor, called chromatic dispersion CDis often referred to simply as dispersion. These two nonlinear processes are not a major concern for PONs.
The burst-mode receiver therefore requires additional circuitry to accommo- date dc-coupled operation.
Users may declare a minimum cell rate, which is guaranteed by the network. The MPCP procedure described in The POH supports performance monitoring by the end equipment, status, signal labeling, a tracing function, and a user channel. Constant a;plications rate CBR.
This service class is intended for real-time applications such as packet-formatted voice, real-time and near-real-time video, and time-sensitive data. The mechanical challenges in fabricating a ferrule include maintaining both the dimensions of the diameter and the position of the hole relative to the applictions outer surface.
At a certain signal level threshold the SBS process becomes nonlinear and the launched signal loses an increasingly greater percentage of power.
Thus, the importance of mass production of relatively inexpensive equipment and components was an important consideration.