Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Design of a Taper-Underlaid Spot-Size Converter with an Offset

  • Choi, Jun-Seok (Integrated optics laboratory, Department of Physics, Chonnam National University) ;
  • Oh, Jin-Kyong (Integrated optics laboratory, Department of Physics, Chonnam National University) ;
  • Lee, Dong-Hwan (Integrated optics laboratory, Department of Physics, Chonnam National University) ;
  • Lee, Hyung-Jong (Integrated optics laboratory, Department of Physics, Chonnam National University) ;
  • Kim, Sang-Duk (Department of Information communication, Dong-A College)
  • Received : 2007.03.05
  • Published : 2007.03.25
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Abstract

We propose a taper-underlaid spot-size converter (TU-SSC) with an offset which consists of two vertically stacked taper layers. The designed TU-SSC reduces coupling loss of a high index-contrast waveguide with $1.5%{\Delta}$ to a single mode fiber from 1.5 dB to 0.27 dB. We also considered the effects of mask misalignment in the fabrication process of TU-SSC, and optimized the design of TU-SSC so that the additional loss of TU-SSC for the mask misalignment of $3{\mu}m$ in the photo-lithography process was as low as 0.13 dB.

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References

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Cited by

  1. Mode Size Converter based on Muitimode Fiber Taper vol.18, pp.4, 2007, https://doi.org/10.3807/HKH.2007.18.4.280