ETRI Journal

Electronics and Telecommunications Research Institute (한국전자통신연구원)
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InP-Based Polarization-Insensitive Planar Waveguide Concave Grating Demultiplexer with Flattened Spectral Response

  • Kwon, Oh-Kee (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Lee, Chul-Wook (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Lee, Dong-Hun (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Sim, Eun-Deok (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Kim, Jong-Hoi (Convergence Components & Materials Research Laboratory, ETRI) ;
  • Baek, Yong-Soon (Convergence Components & Materials Research Laboratory, ETRI)
  • Received : 2008.07.29
  • Accepted : 2009.03.11
  • Published : 2009.04.30
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Abstract

InP-based planar waveguide 48-channel concave grating demultiplexers with a channel spacing of 0.8 nm (100 GHz) are described and demonstrated. Polarization insensitivity and flattened spectral response are successfully achieved by the introduction of a polarization compensator and a two-focus grating, respectively. The fabricated device shows a polarization-dependent wavelength shift of less than 20 pm and a -3 dB spectral width of about 0.55 nm (68.75 GHz) over all channels.

Keywords

References

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