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 2596 for “"wavelength"”.
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Graded wavelength filter based wavelength detection for a distributed feedback laser biosensor
Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-11T18:39:31Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Altaf_Kashif.docx: 2180725 bytes, checksum: 1eda169a0e92f4bceba9ba7fb757bf1c (MD5) Altaf_Kashif.pdf: 13322684 bytes, …
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Telecom Wavelength Quantum Devices
… into the near infrared, into the low absorption wavelength windows utilised in long-haul optical telecommunication. Initial experiments succeeded in interfering O-band (1260—1360 nm) photons from an InAs/GaAs QD with dissimilar photons from a laser, an important mechanism for quantum …
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Long wavelength X-ray microanalysis
… between the light element characteristic wavelengths in an x-ray scanning microanalyser. For long wavelength microanalysis purposes, the classica1 methods of x-ray spectrometr.v are impracticable. The proportional counter, the best of several possibilities, has there~ore been employed as a …
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Short-visible-wavelength GHz Display
… channels at blue and ultraviolet wavelengths by combining an integrated photonic modulator array with a strong pump beam for sum-frequency generation in a bulk nonlinear crystal. We realize a 4x4 array of amplitude-modulated spots at 420nm with a 3dB bandwidth of 2GHz.
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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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Wavelength partitioning in WDM ring networks
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2000.
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Automated wavelength recovery for silicon photonics
… same platform with CMOS technology, can enable Wavelength Division Multiplexed (WDM) systems. However, Silicon photonics has to overcome the wafer level, fabrication variations and dynamic temperature fluctuations, induced by processor cores with low-energy high-speed resonators. In this work, …
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Wavelength compensation in fused fiber couplers
The performance of fused fiber couplers is wavelength dependent. Wavelength spectral compensation is a technique to decrease the effect of the wavelength dependence, which is an essential task for many applications in fiber optic communication systems. Fiber devices such as wavelength-flattened …
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Wavelength division multiplexing technology and systems
Wavelength Division Multiplexed (WDM) based broadband fiber optic networks offer an attractive approach to achieve extremely high throughputs while employing moderate speed electronics. Passive optical filters play a crucial role in such networks serving the function of combining and separating …
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Investigation of wavelength tunable laser modules for use in future optically switched dense wavelength division multiplexed networks
This thesis investigates the use of fast wavelength tunable laser modules in future optically switched 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 …
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Wavelength agnostic WDM strategies for avionic telecommunications
… aircraft. Particular attention has 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 …
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Limits of long wavelength High Harmonic Generation
Many researchers are pushing for long wavelength driver pulses for High Harmonic Generation (HHG). The advantage of longer wavelengths is that the cut-off of the harmonic spectrum can be increased without the need for large electric fields. Large electric field is undesirable because it leads to …
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Long-wavelength imaging and the 4th Amendment
Great levels of computational power and new kinds of sensors are being embedded into today's mobile devices. Through computation and new algorithms, the power of these sensors is being harnessed to form full images of scenes around corners and behind walls. This technology has great benefits and …
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Dual channel bidirectional wavelength division multiplexing datalink
Wavelength division multiplexing two channels on one fiber is one approach that enables us to make use of the extremely large bandwidth of optical fibers. We start with an analysis of optical fibers, sources, detectors, filters and wavelength division ,multiplexers. Then, using the knowledge from …
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The Point Contact, Electric-Tunneling, Submillimeter Wavelength Detector
Made available in DSpace on 2014-12-08T22:24:37Z (GMT). No. of bitstreams: 1 7000862.pdf: 1494520 bytes, checksum: dbf406c297bf265697a3e995d598d10b (MD5) Previous issue date: 1969
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The Effect of Wavelength on Visual Perceptual Latency
Made available in DSpace on 2014-12-03T23:51:27Z (GMT). No. of bitstreams: 1 6402892.pdf: 2406477 bytes, checksum: 67a311478b8b115a4d56798f3fc14efc (MD5) Previous issue date: 1963
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Long-wavelength gallium-indium-arsenide quantum wire lasers
Long-wavelength (1.55 $\mu$m) $\rm Ga\sb{x}In\sb{1-x}As/Al\sb{0.48}In\sb{0.52}As$ multiple quantum wire (MQWR) lasers grown on (100) on-axis InP substrates by a single-step MBE have been successfully fabricated and characterized. The QWRs were formed in situ in the (GaAs)$\sb2$/(InAs)$\sb{2.2}$ …
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Multi-wavelength observations of sprites over southern Africa
… multiple cameras that were filtered at specific wavelengths. In 5 out of 65 nights of observations, 113 video frames containing one or more sprites were recorded, comprising different morphologies (Carrot-single (10%), Carrot/Column (10%), Carrot-groups (37%), Column-groups (12%), Tree-like (4%), …
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Wavelength switching and routing through evanescently induced absorption
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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