Original Paper

Journal of Sol-Gel Science and Technology

, Volume 48, Issue 1, pp 80-85

Waveguides and gratings fabrication in zirconium-based organic/inorganic hybrids

  • Carlos M. S. VicenteAffiliated withDepartment of Physics and Instituto de Telecomunicações, University of Aveiro
  • , Edison PecoraroAffiliated withDepartment of Physics and Instituto de Telecomunicações, University of Aveiro
  • , Rute A. S. FerreiraAffiliated withDepartment of Physics, CICECO, University of Aveiro
  • , Paulo S. AndréAffiliated withDepartment of Physics and Instituto de Telecomunicações, University of Aveiro
  • , Rogério NogueiraAffiliated withDepartment of Physics and Instituto de Telecomunicações, University of Aveiro
  • , Younes MessaddeqAffiliated withInstitute of Chemistry, São Paulo State University, UNESP
  • , Sidney J. L. RibeiroAffiliated withInstitute of Chemistry, São Paulo State University, UNESP Email author 
  • , Luís D. CarlosAffiliated withDepartment of Physics, CICECO, University of Aveiro Email author 

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Abstract

Sol–gel derived poly(oxyethylene)/siloxane organic/inorganic di-ureasil hybrids containing different amounts of methacrylic acid (McOH, CH2=C(CH3)COOH)) modified zirconium oxo-clusters (Zr-OMc) were processed as thin films deposited in glassy substrates via spin coating and as transparent and shape controlled monoliths. Channel monomode waveguides and diffraction gratings were UV patterned using the Talbot interferometer and the Lloyd mirror interferometer experimental setups. The time dependence of the diffraction gratings efficiency was studied for hybrids containing different amounts of Zr-OMc. Finally, the number of propagating modes and the refractive index gradient within the waveguide region, determined as a Gaussian section located below the patterned channel, was evaluated and modeled, a maximum index contrast of 2.43 × 10−5 being estimated.

Keywords

Organic/inorganic hybrids Integrated optics Sol–gel Waveguides Zirconium oxo-clusters