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      Filtering characteristics of hybrid integrated polymer and compound semiconductor waveguides

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      Author(s)
      Ozturk, C.
      Huntington, A.
      Aydınlı, Atilla
      Byun, Y.T.
      Dagli, N.
      Date
      2002
      Source Title
      Journal of Lightwave Technology
      Print ISSN
      0733-8724
      Publisher
      IEEE
      Volume
      20
      Issue
      8
      Pages
      1530 - 1536
      Language
      English
      Type
      Article
      Item Usage Stats
      243
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      207
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      Abstract
      This paper reports a study on a compact filter fabricated using hybrid integration of compound semiconductors and polymers. A GaAs epilayer is glued onto a polymer channel waveguide forming a highly asymmetrical directional coupler. This approach results in a narrow band filter due to very different dispersion characteristics of the compound semiconductor and the polymer materials. Furthermore, fiber coupling loss has been significantly reduced, since the input and output coupling is done through the polymer waveguide. Filtering characteristics can be engineered by changing the thickness and the length of the semiconductor epilayer. This can be done precisely using etch stop layers and noncritical lithography. The spectral response of such a filter can also be tuned electronically either using the electro-optic properties of the compound semiconductor or the thermo-optic properties of the polymer.
      Keywords
      Bandstop filter
      Hybrid integration
      Tunable filter
      Wavelength division multiplexing (WDM)
      Dispersion (waves)
      Electrooptical effects
      Integrated optoelectronics
      Lithography
      Optical filters
      Optical multilayers
      Optical properties
      Semiconducting gallium arsenide
      Semiconductor device manufacture
      Wavelength division multiplexing
      Bandstop filter
      Compound semiconductor waveguides
      Fiber coupling loss
      Gallium arsenide epilayer
      Hybrid integrated polymer waveguides
      Narrow band filter
      Polymer channel waveguide
      Thermooptic properties
      Tunable filter
      Optical waveguides
      Permalink
      http://hdl.handle.net/11693/24665
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/JLT.2002.800783
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      • Department of Physics 2551
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