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.
Results
Showing 1 to 20 of 25 for “"dwdm"”.
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Multi-domain crankback operation for IP/MPLS & DWDM networks
… upon dense wavelength division multiplexing (DWDM) solutions as well as advanced layer 2/3 IP multiprotocol label switching (MPLS) and Ethernet technologies as well. A range of networking control protocols has also been developed to implement service provisioning and management across these …
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Study of Variable MUX/DEMUX for DWDM Applications in Optical Communications using Thin Film Magnetooptic Materials
… thin film magnetooptic variable MUX/DEMUX for DWDM optical communications. Several items were studied to include: total diffraction angles achieved with magneto-optic ferrite thin films in a two dimensional multi stage array configuration; three dimensional analysis of thin films for variable …
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Investigation of wavelength tunable laser modules for use in future optically switched dense wavelength division multiplexed networks
… dense wavelength division multiplexed networks (DWDM). The worldwide demand for increasingly greater broadband access has thus far been satisfied by the use of DWDM networks, enabled by the development of the erbium doped amplifier. However as this demand continues to grow electronic switching at …
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Performance of multichannel fiber optic parametric amplifier
… systems, Dense Wavelength Division Multiplexing (DWDM) is very popular in which multiple optical signals at various wavelengths are combined and transmitted through a single fiber. DWDM technology provides a cost effective deployment strategy. One of the key components in DWDM system is an optical …
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Opto-VLSI based WDM multifunction device
… of Dense-Wavelength Division Multiplexing (DWDM) optical fiber transmission systems has the potential to meet this demand. However, crucial components of DWDM networks – add/drop multiplexers, filters, gain equalizers as well as interconnects between optical channels – are currently not …
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Design and control techniques of optical networks
… In particular this Ph.D. dissertation deals with DWDM optical packet-switched networks. The issue introduces a huge quantity of problems from physical layer up to transport layer. Here this subject is tackled from the network level perspective. The long term solution represented by optical packet …
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Phase Noise Characterization of a Mode-Locked Quantum-Dot Coherent Optical Frequency Comb Source Laser
… in a dense wavelength division multiplexing (DWDM) system. Each of these channels require an individual optical carrier frequency to be generated from a discrete high-performance tunable laser. These arrays of discrete lasers are an expensive component in the transmitter of an optical …
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Investigation of code reconfigurable fibre Bragg gratings for Optical Code Division Multiple Access (OCDMA) and Optical Packet Switching (OPS) Networks
… system and a 16-channel reconfigurable OCDMA/DWDM system with 50GHz DWDM intervals has been demonstrated.<br/><br/>These results highlight the feasibility of FBG-based optical coding/decoding techniques, with improved system flexibility and sustainability.
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End-to-end provisioning in multi-domain/multi-layer networks
… level, dense wavelength division multiplexing (DWDM) has seen fast growth in long-haul backbone/metro sectors. At the Layer 1.5 level, revamped next-generation SONET/SDH (NGS) has gained strong traction in the metro space, as a highly flexible sub-rate' aggregation and grooming solution. …
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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
… con sus dos principales tecnologías, CWDM y DWDM, en distintas topologías de red para optimizar los recursos disponibles, implica el uso de diversos componentes ópticos como transmisores, receptores, de/multiplexores, filtros, etc. Es en este contexto donde el uso de dispositivos …
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High-performance switching architectures for optical networks
… and Dense Wavelength Division Multiplexing (DWDM) technology, the electronic switching nodes in the core of the network represent the bottleneck in terms of speed and capacity for the overall network. For this reason DWDM technology must be exploited not only for data transport but also for …
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Performance analysis of optical burst switching network
… in the optical switching network invoked by the DWDM technology and studying the changes of the schemes, we design the new optical burst switching networks, analyze the performance of the proposed scheme and interpret the analysis results. For design point of view, the fairness guaranteeing …
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Photonic integrated circuit for the manipulation of coherent optical combs
… dense wavelength division multiplexing (DWDM) systems fully occupying the low absorption region of optical fibre from 1530 nm to 1625 nm (the C and L bands). This is both due to an increase in the number of users worldwide and existing users demanding more bandwidth. Therefore, current …
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Numerical modelling of advanced modulation formats and WDM transmission
… of dense wavelength division multiplexing (DWDM) system design. We employ advanced spectral domain filtering techniques and carrier pulse reshaping. We then apply these optimisation methods to investigate spectral and temporal domain characteristics of advanced modulation formats in fibre …
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Silicon-photonics for VLSI systems
… wires; dense wavelength division multiplexing (DWDM) - where multiple data channels share a single waveguide or fiber to greatly extend bandwidth density - and the potential to combine at chip-scale with a very large scale integrated (VLSI) CMOS electrical chip make them a promising alternative …
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Fibre Bragg grating temperature sensors for high-speed machining applications
… used to interrogate that sensor include DWDM, WDM, athermic grating, tuneable grating and coupler. Optical fibre devices are simpler to place in situ prior to the machining tests and they offer faster response and greater sensitivity than was previously possible. Results are presented …
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Commercialization of microelectromechanical systems (MEMS)
… for dense wavelength division multiplexing (DWDM) and optical switching. This thesis examines various models of dynamic technology adoption and explores how they apply to MEMS technology. Furthermore, by way of historical comparison to the development of application specific integrated …
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Optical receiver techniques for integrated photonic links
… a bulk CMOS memory process as part of a 9x5Gb/s DWDM receiver bank.
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Routing and protection issues in optical WDM mesh networks
… Division Multiplexing (WDM) and then Dense WDM (DWDM) allow today's optical networks to simultaneously serve huge amount of traffic requirements. Particularly, the explosion of video, TV and other high bandwidth realtime traffic requires more and more bandwidth that except WDM or DWDM networks, …
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Building China's high-tech telecom equipment industry : a study of strategies in technology acquisition for competitive advantage
… equipment such as core/backbone routers and DWDM optical transmission systems. The basic question this thesis seeks to answer, therefore, is how can Chinese companies become technologically competitive within the high-end segments of the telecom equipment market? A case study methodology was …
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