ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Thermal Behavior of Arrayed-Waveguide Grating Made of Silica/Polymer Hybrid Waveguide

  • Received : 2004.08.17
  • Published : 2004.12.31
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Abstract

The thermal behavior of an arrayed-waveguide grating made of a silica/polymer hybrid waveguide was examined. We experimentally confirmed that the hybrid waveguide is effective to decrease the temperature and polarization dependence of the center wavelength owing to the negative thermo-optic coefficient of the refractive index and extremely low baking temperature of the polymer cladding. However, the detachment of the polymer cladding from the silica core, which took place either during a repeated heat cycle test or during long-term storage in atmosphere, was a serious problem for practical use.

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References

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