Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Widely Tunable Wavelength-Selective Reflector Using Polymer Waveguide Double-Ring-Resonator Add/Drop Filter and Loop-back Mirror

  • Lee, Ho (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Kim, Gun-Woo (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Park, Jun-Oh (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Kim, Su-Hyun (Department of Electronics and Communications Engineering, Kwangwoon University) ;
  • Chung, Young-Chul (Department of Electronics and Communications Engineering, Kwangwoon University)
  • Received : 2008.08.05
  • Accepted : 2008.09.01
  • Published : 2008.09.25
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Abstract

A wavelength-selective reflector, composed of a double-ring-resonator add/drop filter and a loop-back mirror at the drop port to be used for a hybrid-integrated tunable laser is designed and fabricated. High-index-contrast polymer waveguide is used to realize a compact device as small as $2mm{\times}0.4mm$. The radii of the rings are slightly different from each other to obtain a wide wavelength tuning via a vernier effect. Peak reflectivity is measured to be 52% for TE mode and polarization-dependent wavelength shift is 0.95 nm. The tuning range is measured to be about 42 nm for applied current as small as 46 mA.

Keywords

References

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