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 183 for “"all-optical"”.
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Wavelength routing for all-optical networks
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1993.
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All optical systems for terabit network era
… capacity demand drives the development of the optical fiber networks. Since optical super-channels carrying multi- Terabit/s transmissions are the next evolution of the optical links, future transmitters and receivers systems will be required to handle vast volume of information while …
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All-optical processing using cross-phase modulation
… by the author). When data is propagated along an optical transmission line some timing irregularities can occur such as timing jitter and phase wander. Traditionally these timing problems would have been corrected by converting the optical signal into the electrical domain and then compensating …
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Transmission experiments over the all-optical network
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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All-optical soliton communication : devices and limitations
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Comprehensive security strategy for all-optical networks
Optical networking is a powerful means of communication in modem times of high bandwidth demands and high data speeds. While developments in optical networking continue to progress, however, the security implications they create have not yet caught up. In this thesis, we characterize a selection of …
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All-optical metamaterial modulators : fabrication, simulation and characterization
Artificially structured composite metamaterials consist of sub-wavelength sized structures that exhibit unusual electromagnetic properties not found in nature. Since the first experimental verification in 2000, metamaterials have drawn considerable attention because of their broad range of …
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Creation of an all-optical Bose-Einstein condensate
… of 87Rb atoms, with the creation of a large all-optically cooled Bose-Einstein condensate as a proof of the temperatures and densities achieved. In most cold atoms experiments, the Bose-Einstein condensate is achieved by evaporating the atoms in a magnetic trap.;Due to the swallowness of …
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ALL-OPTICAL DELTA-SIGMA MODULATOR DESIGN AND IMPLEMENTATION
… research an approach to design and implement all-optical delta-sigma modulator (ODSM) has been expanded. The two main blocks of this modulator are “leaky integrator” and “bi-stable switch” designed and implemented by using active element like semiconductor optical amplifier (SOA) and other …
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Operation, administration and maintenance in all optical networks
… bandwidth capacity are of utmost importance. All Optical Networks has emerged as a promising technology to deliver the high capacity demands of current and envisaged future applications.
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All-optical electron acceleration with ultrafast THz pulses
… eective at accelerating electrons but historically lacking in ecient sources. In particular, through various improvements to the grating-based tilted pulse front (TPF) technique, we demonstrate a record conversion eciency of 1%. We also implement echelon-based TPF, achieving 3.5x higher eciency …
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All-optical 2r regenerator based on self-phase modulation
Nowadays, optical regeneration is getting popularity as it provides an effective way of coping with transmission impairment. Transmission impairments degrade the quality of optical signals and thus, ultimately limiting the achievable transmission distance. Optical 2R regenerators provide an …
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A novel configuration of all-optical differential protection scheme
Advantages of the optical current sensing techniques have stimulated the development of the optical differential protection schemes for busbar protection. However, these optical differential schemes adopt mixed optical-numerical processes that use a platform based on modern numerical/microprocessor …
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Batch wavelength assignment in all-optical central-switch networks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
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All-optical switching using semiconductor amplifiers biased at transparency
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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Noise and crosstalk analysis of all-optical time division demultiplexers.
… restricts the data capacity of long-haul optical time division multiplexing (OTDM) systems. It is desirable to demultiplex the OTDM signal in optical domain, thereby lifting the bandwidth limitation of the electrical demultiplexer. The general principle of all-optical time division …
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Novel all-optical switching and processing techniques for optical networking
In this thesis, the possibility of processing optical time-division multiplexing (OTDM) signals in both the temporal and spectral domains is investigated. The technique relies on the conversion of high-speed OTDM signals into a mixed time and wavelength division multiplexing (TDM-WDM) format. …
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All-optical photoacoustic and laser-ultrasonic imaging in heterogeneous tissue
… velocity contrasts. US is useful for imaging overall structure in tissue, however, acoustic contrasts are relatively low in biological tissue. In contrast, optical properties are highly specific, but imaging with light is typically limited to depths of about 1mm. Therefore, we aim to create images …
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The development of components for ultrafast all-optical communication networks
The 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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