Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Passive optical networks"”.
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Very High Speed Coherent Passive Optical Networks
… the viability of coherent technology in a passive optical network (PON) setting. Coherent PON offers an alternative to IM/DD that can scale to higher datarates. This thesis focuses on datarates of 200 Gb/s per wavelength for next generation PON. Improving the cost competitiveness of …
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Dynamic bandwidth management with service differentiation over ethernet passive optical networks
Ethernet passive optical networks (EPONs) address the first mile of the communication infrastructure between the service provider central offices and the customer sites. As a low-cost, high speed technology, EPONs are deemed as the solution to the bottleneck problem of the broadband access network. …
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eStudy of BER Performance in Passive Optical Networks with Different Modulation Techniques
… of the broadband provision, professionals use optical fiber to account for the present and the future broadband demand.</p> <p>Power consumption and bandwidth capacity, which the optical fiber has offered, are two main requirements for success of any communication system. In this thesis several …
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A novel storage area network (SAN) extension solution over passive optical networks (PONs)
… dissertation, a new solution, SAN extension over passive optical networks (S-PONs), has been proposed to address the above problems. PONs are the mainstream wireline technology for upgrading the megabit-level access solutions (such as xDSL and Cable Modem) into gigabit-level broadband access. To …
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Advanced techniques for fast offset cancellation limit amplifiers
… users increases, new technologies are required. Passive optical networks promise a vast improvement over previous methods, but they require amplifiers which can quickly adapt to changing input power levels. This thesis proposes two methods for addressing this problem, which are implementable in …
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Optimizing resource allocation in next-generation optical access networks
… spouting of bandwidth-demanding applications, Passive Optical Networks (PONs) exploit the potential capacities of optical fibers, and are becoming promising future-proof access network technologies. On the other hand, for a broader coverage area and higher data rate, integrated optical and …
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Wavelength agnostic WDM strategies for avionic telecommunications
… to Wavelength Division Multiplexing (WDM) in Passive Optical Networks (PONs) and how the network is affected by the harsh environment found on aircraft. The harsh environment presents a particular challenge with respect to the operational temperature range. Over this range it is desirable to …
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Design of 10 Gb/s burst-mode receivers for high-split extended reach PONs
… speed in the currently deployed communication networks. Most networks in use today still consist of twisted copper wires, inherited from the telephone network. The disadvantages of reusing the existing telephone network are twofold. Firstly, the bandwidth of twisted copper wires is limited and …
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Burst-mode electronic dispersion compensation in long reach PONs
Long reach passive optical networks (LR-PONs), which integrate fibre-to-the-home with metro networks, have been the subject of intensive research in recent years and are considered one of the most promising candidates for the next generation of optical access networks. Such systems ideally have …
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Contribución al estudio y optimización de dispositivos basados en holografía dinámica para su uso en redes ópticas pasivas multiplexadas en longitud de onda Wdm-Pon
… semiconductores. . ABSTRACT The utilization of Passive Optical Networks with Time Division Multiplexing (TDMPON), and more recently the use of Passive Optical Networks with Wavelength Division Multiplexing (WDM-PON), with its two main technologies, CWDM and DWDM, using diverse network topologies …
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Noise Suppression in OCDMA Networks using Nonlinear Optical Devices
Optical code division multiple access (OCDMA) is a multiplexing technique that has a number of inherent advantages that make it suitable for use in passive optical networks, such as allowing subscribers to transmit information in an asynchronous fashion over a single optical fibre. This form of …
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Optical Fibers for Space-Division Multiplexed Transmission and Networking
… the transmission capacity, for which, novel optical fiber is one of the key technologies. Such fibers must possess the following characteristics: 1) high mode density per cross-sectional area and 2) low crosstalk or low modal differential group delay (DMGD) to reduce complexity of digital …
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Improving energy efficiency and quality of service in an integrated wireless-optical broadband access network
… on developing high capacity mobile broadband networks. Accordingly, researchers have undertaken developmental work for an integrated wireless-optical broadband access network (WOBAN). Passive optical networks (PONs) and fourth generation (4G) wireless networks are two major candidate …
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SOA enhanced optical line terminal for future optical access network
Future passive optical networks (PONs) aim to deliver data rates of 100 Gb/s per wavelength using intensity-modulation direct detection (IM/DD) and up to 400 Gb/s per wavelength using coherent technology. Achieving these targets requires overcoming the large dynamic range of burst-mode upstream …
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Dynamically reconfigurable long-reach PONs for high capacity access
… approach prompted the design of a long-reach passive optical network (LR-PON) in which the physical reach and split of a conventional PON is significantly increased through the use of intermediate optical amplification. In particular, the LR-PON architecture effectively integrates the metro …
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Μέθοδοι και τεχνικές βελτιστοποίησης της απόδοσης δικτύων οπτικών επικοινωνιών
Στις μέρες μας, οι αυξανόμενες απαιτήσεις για υπηρεσίες υψηλού φασματικού εύρους ζώνης επιβάλλουν την ανάπτυξη νέων τεχνολογιών στο σχεδιασμό των δικτύων νέας γενιάς, ικανές να προσφέρουν α) χαμηλό κόστος κατά το σχεδιασμό του συστήματος, β) μεγάλη απόσταση μετάδοσης, γ) πολλοί χρήστες και δ) υψηλό …
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Αποτίμηση της απόδοσης τηλεπικοινωνιακών δικτύων πολυδιάστατης κίνησης με έμφαση στα οπτικά δίκτυα
Η παρούσα διδακτορική διατριβή πραγματεύεται την ανάλυση και προσομοίωση τηλεπικοινωνιακών δικτύων πολυδιάστατης κίνησης, ενώ δίνεται ιδιαίτερη έμφαση στα οπτικά δίκτυα. Βασικός σκοπός της διατριβής αποτελεί η ανάπτυξη αναλυτικών μοντέλων για τον υπολογισμό παραμέτρων απόδοσης του δικτύου, όπως η …