Silica-waveguide thermooptic phase shifter with low power consumption and low lateral heat diffusion

Bo Asp Møller Andersen, Lars Jensen, Christian Laurent-Lund, Carsten Thirstrup

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    A thermooptic (TO) phase shifter consisting of a thin film heater on the top of a loaded stripline silica waveguide on a silicon substrate is shown to exhibit faster time response than reported for phase shifters based on a buried silica waveguide configuration. The risetime was measured to be 0.24 ms, which is in good agreement with calculated thermal distributions in the structures. The lateral heat diffusion distance in the loaded stripline structure is shown to be smaller than in buried waveguide structures. This implies small thermal crosstalk and suggests a high-level integration of adjacent waveguides
    Original languageEnglish
    JournalI E E E Photonics Technology Letters
    Issue number12
    Pages (from-to)1415-1418
    Publication statusPublished - 1993

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    Copyright: 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


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