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Design and tunable resonant cavities with constant bandwidthJanuary 1949 (has links)
L.D. Smullin. / "April 5, 1949." / Bibliography: p. 6. / Army Signal Corps Contract No. W36-039-sc-32037 Project No. 102B Dept. of the Army Project No. 3-99-10-022
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The theory of symmetrical waveguide T'sJanuary 1947 (has links)
by J.C. Slater. / "April 3, 1947." / Includes bibliographical references. / Army Signal Corps Contract No. W-36-039 sc-32037
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Wave-packet dynamics in slowly perturbed crystals : gradient corrections and Berry-phase effects /Sundaram, Ganesh, January 2000 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references (leaves 62-68). Available also in a digital version from Dissertation Abstracts.
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Optical clock signal distribution and packaging optimizationWu, Linghui. January 2002 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.
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Suppression of radiation damping in electromagnetic waveguide, signature of quantum decoherence in the field bathTing, Chu Ong 28 August 2008 (has links)
Not available / text
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High performance dense wavelength division multiplexing/demultiplexing based on blazed grating and ion-exchanged glass waveguide techniqueZou, Jizuo 28 August 2008 (has links)
Not available / text
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Optical clock signal distribution and packaging optimizationWu, Linghui 09 May 2011 (has links)
Not available / text
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Ni and rare-earth metals in-diffusion in LiNbO3 for waveguide application張志成, Cheung, Chi-shing, Samuel. January 1998 (has links)
published_or_final_version / Electrical and Electronic Engineering / Master / Master of Philosophy
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LOSSES IN TITANIUM-DIFFUSED LITHIUM-NIOBATE CHANNEL WAVEGUIDES DUE TO DIRECTIONAL CHANGESHutcheson, Lynn Donald January 1980 (has links)
The optical transmission characteristics of dielectric optical waveguides having directional changes is considered in this study. Experimental and theoretical loss results are presented for two types of waveguide bends. First is the corner bend where two straight waveguides are joined together at some angle. The second type is a curved waveguide having some radius of curvature. The loss mechanism is different for each type of bend. The corner bend is basically a scattering loss due to a mismatch of the modes of the two joining waveguides. The loss in the curved waveguide is due to radiation of the energy away from the waveguide as it propagates around the bend. The waveguides were fabricated by diffusing 3 μm wide 200 Å thick titanium strips into LiNbO₃. All of the curved portions of waveguide were joined by straight waveguides at the input and output of the curved waveguides. Rayleigh scattering and absorption loss was measured in the straight waveguides to determine their optical quality which yielded about 1.4 dB/cm. The loss due to corner bends was measured for angles from 0.1° to 3.0° in steps of 0.1°. The loss ranged from about 0.1 dB to 23 dB for 0.1° and 3.0° respectively. The results are slightly dependent upon the polarization of the light and the orientation of the LiNbO₃ crystal. The curved waveguides were fabricated in two different geometries. The first geometry was a straight waveguide joined by a curved portion and then joined by another straight waveguide. The second geometry is different from the first by another curved portion joining the first curved portion in between the two straight waveguides. The two curved portions are equal but have opposite curvature which have an S shape. The radiation loss was measured for radius of curvatures from 1.0 cm to 3.0 cm. The results ranged from 41 dB/cm to 1 dB/cm for 1.0 cm and 3.0 radius of curvatures respectively. At each of the straight to curved and curved to curved junctions there exists a mode mismatch loss. The straight to curved mode mismatch loss was 1.65 dB for R = 1 cm and 0.5 dB for R = 3 cm. The curved to curved mode mismatch loss was 6 dB for R = 1 cm and 0.5 for R = 3 cm. The results for the corner bends and the curved bends were used to study the constraints on integrated optical devices. In many integrated optical devices, it is necessary for two different straight portions of a single mode channel waveguide to be connected with a given amount of transverse offset. The experimental and theoretical results showed that for small transverse offsets the corner bend approach yields smaller loss. The curved bend (S bend) approach was better for larger transverse offsets. Theory was developed for this study of bending loss in titanium diffused LiNbO₃ waveguides. In general all of the experimental results agreed quite well with the theoretical predictions.
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Multimode polymer waveguides for high-speed on-board optical interconnectsBamiedakis, Nikolaos January 2009 (has links)
No description available.
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