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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea


  • Vol. 11, Iss. 1 — Mar. 25, 2007
  • pp: 40–43

Design of a Taper-Underlaid Spot-Size Converter with an Offset

Jun-Seok Choi, Jin-Kyong Oh, Dong-Hwan Lee, Hyung-Jong Lee, and Sang-Duk Kim  »View Author Affiliations

Journal of the Optical Society of Korea, Vol. 11, Issue 1, pp. 40-43 (2007)

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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 <TEX>$1.5%{\Delta}$</TEX> 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 <TEX>$3{\mu}m$</TEX> in the photo-lithography process was as low as 0.13 dB.

© 2007 Optical Society of Korea

OCIS Codes
(130.0130) Integrated optics : Integrated optics
(230.7390) Optical devices : Waveguides, planar
(250.5300) Optoelectronics : Photonic integrated circuits

Original Manuscript: March 5, 2007
Revised Manuscript: March 16, 2007
Published: March 25, 2007

Jun-Seok Choi, Jin-Kyong Oh, Dong-Hwan Lee, Hyung-Jong Lee, and Sang-Duk Kim, "Design of a Taper-Underlaid Spot-Size Converter with an Offset," J. Opt. Soc. Korea 11, 40-43 (2007)

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