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 122 for “"WDM"”.
-
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 …
-
Wavelength partitioning in WDM ring networks
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
-
Strictly non-blocking WDM cross-connects
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
-
Wavelength agnostic WDM strategies for avionic telecommunications
… been paid 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 …
-
Effect of Dispersion on SS-WDM Systems
… the effect of dispersion on a spectrum-sliced WDM (SS-WDM) system, specifically a system employing a single-mode optical fiber. The system performance is expressed in term of the receiver sensitivity defined as the average number of photon per bit <i>N<sub>p</i> </sub>required for a given …
-
WDM of solitons in dispersion managed transmission systems
… of solitons in wavelength division multiplexed (WDM) systems with dispersion management in a wide range of dispersion regimes. Background material is presented to show how solitons propagate in optical fibres, and key problems associated with real systems are outlined. Problems due to collision …
-
Routing and protection issues in optical WDM mesh networks
The advents of Wavelength 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 …
-
Link failure protection and restoration in WDM optical networks
<p>In a wavelength-division-multiplexing (WDM) optical network, the failure of fiber links may cause the failure of multiple optical channels, thereby leading to large data loss. Therefore the survivable WDM optical networks where the affected traffic under link failure can be restored, have been a …
-
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 …
-
Multilevel Nyquist-WDM Ultra-Long-Haul Coherent Optical Transmission Systems
… Shannon limit). Wavelength division multiplexed (WDM) systems assembled with these modulation formats have proven to support high spectral efficiency for data transmission over distances ranging from 3000~km to 10000~km. Besides the report of state-of-the-art transmission experiments, some …
-
Saddlepoint Approximation for Calculating Performance of Spectrum-Sliced WDM Systems
… of wavelength-division multiplexing (WDM). While conventional WDM systems employ laser diodes operating at discrete wavelengths as carriers for the different data channels that are to be multiplexed, spectrum-sliced systems make use of spectral slices of a broadband noise source for …
-
Numerical modelling of optical micro-cavity ring resonators for WDM networks
Augmenting the level of integration for a lower cost and enhancing the performance of the optical devices have turned out to be the focus of many research studies in the last few decades. Many distinct approaches have been proposed in a significant number of researches in order to meet these …
-
Investigation of performance issues affecting optical circuit and packet switched WDM networks
… boost the optical signal to noise ratio of the WDM channels and as channel configurations change, wavelength dependent gain variations in the EDFAs can lead to channel power divergence that can result in significant performance degradation. This issue is examined in detail using a reconfigurable …
-
On IP over WDM burst-switched long haul and metropolitan area networks
The IP over Wavelength Division Multiplexing (WDM) network is a natural evolution ushered in by the phenomenal advances in networking technologies and technical breakthroughs in optical communications, fueled by the increasing demand in the reduction of operation costs and the network management …
-
Impacts of coherent crosstalk on the performance and scalability of WDM AONs
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
-
Dynamic resource allocation in WDM networks with optical bypass and waveband switching
… link resource allocation and node complexity in WDM optical networks Chapter 2 considers networks where the nodes have full wavelength accessibility, and investigates link resource allocation in ring networks in the form of the routing and wavelength assignment problem. In a ring network with N …
-
Analysis, Design and Performance Evaluation of Optical Fiber Spectrum-Sliced WDM Systems
… implementing wavelength-division-multiplexing (WDM) in optical fiber systems. Conventional WDM systems employ laser diodes operating at discrete wavelengths as carriers for the different data channels that are to be multiplexed. Spectrum-slicing provides an attractive low-cost alternative to the …
Page 1 of 7