{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/72001"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/72001","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"A Universal Heterostructure for Photonic Integrated Circuit Applications","abstract":"The issues involved in using a "universal heterostructure" technology for the fabrication of integrated waveguide photonic circuits are investigated using an optical 2 x 2 crossbar switch as a case study. The optical characteristics of slab waveguides are investigated as candidate "universal" structures. Different core profiles, core sizes, and cladding arrangements are considered. A reverse-biased laser heterostructure is demonstrated to be a viable integrated modulator. Local widening of the optical band gap for modulators and passive guides by vacancy-induced layer disordering (VILD) is shown to be an essential integration process. A wet-etched ridge technology for lateral waveguide formation is adopted after the usefulness of impurity-induced layer disordering (IILD) is shown to be limited, especially for large core waveguide structures. The routing characteristics of wet-etched large and small core waveguide structures are shown to be similar to the best IILD formed waveguides. Finally, a system representation for analyzing the performance of a blocking 2 x 2 crossbar switch is developed and used in conjunction with the experimentally measured performance of a gain-modulated device.","abstract_html":"The issues involved in using a "universal heterostructure" technology for the fabrication of integrated waveguide photonic circuits are investigated using an optical 2 x 2 crossbar switch as a case study. The optical characteristics of slab waveguides are investigated as candidate "universal" structures. Different core profiles, core sizes, and cladding arrangements are considered. A reverse-biased laser heterostructure is demonstrated to be a viable integrated modulator. Local widening of the optical band gap for modulators and passive guides by vacancy-induced layer disordering (VILD) is shown to be an essential integration process. A wet-etched ridge technology for lateral waveguide formation is adopted after the usefulness of impurity-induced layer disordering (IILD) is shown to be limited, especially for large core waveguide structures. The routing characteristics of wet-etched large and small core waveguide structures are shown to be similar to the best IILD formed waveguides. Finally, a system representation for analyzing the performance of a blocking 2 x 2 crossbar switch is developed and used in conjunction with the experimentally measured performance of a gain-modulated device.","abstract_has_math":false,"creators":["Herzinger, Craig Matthew"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["DeTemple, T.A.,"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1993,"date_issued":"1993","date_published":"1993","updated_at":"2026-07-22T22:26:06Z","subjects":["Engineering, Electronics and Electrical"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI9329056"],"render_values":[{"text":"(UMI)AAI9329056","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/72001","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["DeTemple, T.A.,"]},{"key":"dc:creator","label":"Author","values":["Herzinger, Craig Matthew"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1993","2014-12-16T22:23:11Z","10000-01-01"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Electronics and Electrical"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/72001","(UMI)AAI9329056"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The issues involved in using a "universal heterostructure" technology for the fabrication of integrated waveguide photonic circuits are investigated using an optical 2 x 2 crossbar switch as a case study. The optical characteristics of slab waveguides are investigated as candidate "universal" structures. Different core profiles, core sizes, and cladding arrangements are considered. A reverse-biased laser heterostructure is demonstrated to be a viable integrated modulator. Local widening of the optical band gap for modulators and passive guides by vacancy-induced layer disordering (VILD) is shown to be an essential integration process. A wet-etched ridge technology for lateral waveguide formation is adopted after the usefulness of impurity-induced layer disordering (IILD) is shown to be limited, especially for large core waveguide structures. The routing characteristics of wet-etched large and small core waveguide structures are shown to be similar to the best IILD formed waveguides. Finally, a system representation for analyzing the performance of a blocking 2 x 2 crossbar switch is developed and used in conjunction with the experimentally measured performance of a gain-modulated device.","Made available in DSpace on 2014-12-16T22:23:11Z (GMT). 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The optical characteristics of slab waveguides are investigated as candidate "universal" structures. Different core profiles, core sizes, and cladding arrangements are considered. A reverse-biased laser heterostructure is demonstrated to be a viable integrated modulator. Local widening of the optical band gap for modulators and passive guides by vacancy-induced layer disordering (VILD) is shown to be an essential integration process. A wet-etched ridge technology for lateral waveguide formation is adopted after the usefulness of impurity-induced layer disordering (IILD) is shown to be limited, especially for large core waveguide structures. The routing characteristics of wet-etched large and small core waveguide structures are shown to be similar to the best IILD formed waveguides. 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