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 20 of 196 for “"optical communication"”.
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Multiple-user quantum optical communication
… of the information carrying capacity of optical channels requires the signal and physical channel to be modeled quantum mechanically. This thesis considers the problems of distributing multi-party quantum entanglement to distant users in a quantum communication system and determining the …
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Dark solitons in optical communication systems
… and theoretical work on the use of dark optical solitons as data carriers in communications systems. The background chapters provide an introduction to nonlinear optics, and to dark solitons, described as intensity dips in a bright background, with an asymmetrical phase profile. The …
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Noise Metrology in Optical Communication Systems
… evolution towards autonomous and plug-and-play optical systems require of research, development and implementation for the requirements of this paradigm shift. This PhD thesis addresses the problem of noise estimation in optical communication systems. This topic is of critical importance since a …
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Optical Communication Systems for Smart Dust
In this thesis, the optical communication systems for millimeter-scale sensing and communication devises known as "Smart Dust" are described and analyzed. A smart dust element is a self-contained sensing and communication system that can be combined into roughly a cubic-millimeter mote to perform …
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Designing a wireless underwater optical communication system
… modems have long been the default wireless communication method for underwater applications due to their long range, the need for high speed communication has prompted the exploration of non-acoustic methods that have previously been overlooked due to their distance limitations. One scenario …
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SiGe BiCMOS integrated circuits for optical communication transmitters
Telecommunications play a crucial role in our daily lives, not only because of their significance in allowing interaction between all of us, but also due to the forthcoming expansion of connection and exchange of data between machines, the so-called Internet of Things (IoT), which will result in a …
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Digital pulse interval modulation for optical communication systems
… schemes for transmission of information over optical fibres. PTM schemes are known to utilise the vast optical bandwidth to provide efficient transmission characteristics. Pulse code modulation is one such modulation scheme that has been used widely in various communication systems.</p> <p>In …
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Diversity optical communication over the turbulent atmospheric channel
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Silicon Photomultipliers as Free Space Optical Communication Sensors
Free-space optical communications (FSOC) is a growing field that presents an attractive alternative to the the current technology standard of radio frequency (RF) communications. Typical optical carriers have smaller SWaP in comparison to RF systems due to the difference in required aperture sizes. …
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An Advanced Fast Steering Mirror for optical communication
… Fast Steering Mirror (AFSM) for precision optical platforms. The AFSM consists of a mirror driven in two rotational axes by normal force electromagnetic actuators, and controlled via position feedback loops. The dynamic performance is sufficient to provide high bandwidth (approximately 5 …
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Estimation for Poisson processes with applications in optical communication.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1971. Ph.D.
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Multiple-user quantum information theory for optical communication channels
… optimum capacity for free-space line-of-sight optical communication using Gaussian-attenuation apertures. Optimal power allocation across all the spatiotemporal modes is studied, in both the far-field and near-field propagation regimes. We establish the gap between ultimate capacity and data …
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Integrated-optic grating-based filters for optical communication systems
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Angular spectrum measurements of an underwater optical communication channel.
Thesis. 1977. M.S.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Channel scheduling for optical communication network with frequency concurrency
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1988.
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Characterization and nonlinear cleanup of noise in optical communication systems
… photon statistics of RZ/NRZ signals in an optically pre-amplified direct-detection receiver, and show that the results are in good agreement with quantum photodetection theory. Specifically, the ZEROs are described by a degenerate Bose-Einstein distribution, while the ONEs are described by …
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Bidirectional adaptive optics architectures for optical communication through atmospheric turbulence
Free-space optical (FSO) classical communication links can provide high data rates vital for successfully serving the world's exponentially growing demand for bandwidth, while FSO quantum key distribution (QKD) links allow information-theoretic rather than computational secure communication between …
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Optical communication over a non-direct path through the atmosphere.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1973. Elec.E.
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The development of components for ultrafast all-optical communication networks
… need for ultrafast (greater than 100 Gbps) all-optical communication networks is amplified as the amount of data-containing communication traffic continues to grow at an exorbitant rate. Multiplexing schemes are attractive, as they enable increased transmission over silica fiber already buried …
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