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- W3042118810 abstract "This thesis is directed toward studying modalproperties of multilayer optical waveguides. The purpose of theinvestigation is to identify promising waveguide structures whileproviding insight into the operation of existing multilayerwaveguides. A first step in this endeavor was the development of acomputer program, which through its highly interactive userinterface, provides a much needed computational utility toinvestigate complicated multilayer optical waveguide structures. Itis capable of analyzing a large variety of planar structures foroptical waveguide applications. A common traitof the waveguide modes studied in this thesis is that they arerepresented by propagation constants that are complex numbers,indicating associated attenuation of these modes. Two particularclasses of waveguide structures are extensively investigated:metal-oxide-metal (MOM) tunnel junctions in which the attenuationis due to ohmic losses of the constituent metallic layers, andsilicon waveguides fabricated through the use of the Separation bythe IMplantation of OXygen (SIMOX) process where the complexpropagation constant is due to substrate leakage. A thorough analysis of the modal properties ofa large variety of MOM tunnel junctions is performed. Thestructures investigated include aluminum as the bottom electrode,and one of gold, silver, or copper as the top electrode. Theresults thus obtained help to clarify certain points of disputethat exist in the present understanding of the light emissionprocess in such structures. MOM tunnel junction structures arefabricated, and the measured values of the waveguide mode effectiveindices are in good agreement with the results of the computercalculations. A new type of silicon-basedoptical waveguide structure (SIMOX) is proposed for operation inthe near infrared. The compatibility of its fabrication processwith the microelectronics silicon-on-insulator device fabricationtechniques makes it a potential candidate for optical andelectronics integration. The analysis of SIMOX waveguide structuresindicates modal properties that are sufficient to pursue thisemerging technology for optical waveguide applications. The initialexperiments conducted on SIMOX waveguide samples confirm thepredicted properties of these new type of waveguides, and thesegrating coupling experiments are the first ones showing opticalguided waves are indeed supported by SIMOXstructures." @default.
- W3042118810 created "2020-07-16" @default.
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- W3042118810 date "1989-01-01" @default.
- W3042118810 modified "2023-09-24" @default.
- W3042118810 title "Investigation of the Modes of Multilayer Optical Waveguide Structures" @default.
- W3042118810 hasPublicationYear "1989" @default.
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