Hinkov, I.I.HinkovHinkov, V.V.Hinkov2022-03-032022-03-031993https://publica.fraunhofer.de/handle/publica/18304510.1016/0925-4005(93)85259-DWe have experimentally demonstrated the feasibility of a novel integrated acousto-optical gas sensor in LiNbO3. Two-layer optical waveguides with increased refractive index sensitivity have been investigated, as well as TE-TM mode converters on these waveguides with low r.f. drive power. These two (optical and acoustic) parts of the proposed sensor show an adequate performance. The possibilities of the incorporation of a reference channel and the fabrication of a multisensor are also discussed.enacoustoopticsAkustooptikgas sensorgassensorintegrated opticsintegrierte OptikLiNbO3proton-exchangeProtonenaustauschTi-DiffusionTi-indiffusion621541journal article