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 <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

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  1. Y. Hibino, "Recent Advances in High-Density and Large- Scale AWG Multi/Demultiplexers with Higher Index- Contrast Silica-Based PLCs," IEEE, J. Sel. Topics. Quantum Electron., vol. 8, pp. 1090-1101, 2002
    [CrossRef]
  2. K. Kasaya, O. Mitomi, M. Naganuma, Y. Kondo, and Y. Noguchi, "A simple laterally tapered waveguide for low-loss coupling to single-mode fibers," IEEE Photon. Technol. Lett., vol. 5, pp. 345-347, 1993
    [CrossRef]
  3. T. Mizuno, T. Kitoh, T. Saida, Y. Inoue, M. Itoh, T. Shibata, Y. Hibino, and Y. Hida, "Low-loss 1.5%<TEX>$\Delta$</TEX> arrayed waveguide grating with narrow laterally tapered spotsize converter," Electron. Lett., vol. 37, pp. 1452-1454, 2001
    [CrossRef]
  4. T. Mizuno, T. Kitoh, M. Ishii, Y. Inoue, T. Saida, M. Itoh, T. Shibata, and Y. Hibino, "Compact and lowloss arrayed waveguide grating module with tolerancerelaxed spot-size converter," IEEE Photon. Technol.Lett., vol. 15, pp. 239-241, 2003
    [CrossRef]
  5. M. Itoh, T. Saida, Y. Hida, M. Ishii, Y. Inoue, Y. Hibino, and A. Sugita, "Large Reduction of Single- Mode Fiber coupling loss in 1.5%<TEX>$\Delta$</TEX> planar lightwave circuits using spot-size converters arrayed waveguide grating with spot size converters," Electron. Lett., vol. 38, pp. 72-74, 2002
    [CrossRef]
  6. Regis S. Fan and R. Brian Hooker, "Tapered Polymer Single-Mode Waveguides for Mode Transformation," J. Lightwave Technol., vol. 17, pp. 466-474, 1999
    [CrossRef]
  7. K. Maru, T. Hakuta, Y. Abe, M.Ito, S. Himi, H. Uetsuka and T. Mizumoto, "Spot-size converter using vertical ridge taper for low fiber-coupling loss in 2.5%-<TEX>$\Delta$</TEX> silica waveguides," Electron. Lett., vol. 42, pp. 219-220, 2006
    [CrossRef]

2006 (1)

K. Maru, T. Hakuta, Y. Abe, M.Ito, S. Himi, H. Uetsuka and T. Mizumoto, "Spot-size converter using vertical ridge taper for low fiber-coupling loss in 2.5%-<TEX>$\Delta$</TEX> silica waveguides," Electron. Lett., vol. 42, pp. 219-220, 2006
[CrossRef]

2003 (1)

T. Mizuno, T. Kitoh, M. Ishii, Y. Inoue, T. Saida, M. Itoh, T. Shibata, and Y. Hibino, "Compact and lowloss arrayed waveguide grating module with tolerancerelaxed spot-size converter," IEEE Photon. Technol.Lett., vol. 15, pp. 239-241, 2003
[CrossRef]

2002 (2)

M. Itoh, T. Saida, Y. Hida, M. Ishii, Y. Inoue, Y. Hibino, and A. Sugita, "Large Reduction of Single- Mode Fiber coupling loss in 1.5%<TEX>$\Delta$</TEX> planar lightwave circuits using spot-size converters arrayed waveguide grating with spot size converters," Electron. Lett., vol. 38, pp. 72-74, 2002
[CrossRef]

Y. Hibino, "Recent Advances in High-Density and Large- Scale AWG Multi/Demultiplexers with Higher Index- Contrast Silica-Based PLCs," IEEE, J. Sel. Topics. Quantum Electron., vol. 8, pp. 1090-1101, 2002
[CrossRef]

2001 (1)

T. Mizuno, T. Kitoh, T. Saida, Y. Inoue, M. Itoh, T. Shibata, Y. Hibino, and Y. Hida, "Low-loss 1.5%<TEX>$\Delta$</TEX> arrayed waveguide grating with narrow laterally tapered spotsize converter," Electron. Lett., vol. 37, pp. 1452-1454, 2001
[CrossRef]

1999 (1)

Regis S. Fan and R. Brian Hooker, "Tapered Polymer Single-Mode Waveguides for Mode Transformation," J. Lightwave Technol., vol. 17, pp. 466-474, 1999
[CrossRef]

1993 (1)

K. Kasaya, O. Mitomi, M. Naganuma, Y. Kondo, and Y. Noguchi, "A simple laterally tapered waveguide for low-loss coupling to single-mode fibers," IEEE Photon. Technol. Lett., vol. 5, pp. 345-347, 1993
[CrossRef]

Electronics Letters (3)

T. Mizuno, T. Kitoh, T. Saida, Y. Inoue, M. Itoh, T. Shibata, Y. Hibino, and Y. Hida, "Low-loss 1.5%<TEX>$\Delta$</TEX> arrayed waveguide grating with narrow laterally tapered spotsize converter," Electron. Lett., vol. 37, pp. 1452-1454, 2001
[CrossRef]

M. Itoh, T. Saida, Y. Hida, M. Ishii, Y. Inoue, Y. Hibino, and A. Sugita, "Large Reduction of Single- Mode Fiber coupling loss in 1.5%<TEX>$\Delta$</TEX> planar lightwave circuits using spot-size converters arrayed waveguide grating with spot size converters," Electron. Lett., vol. 38, pp. 72-74, 2002
[CrossRef]

K. Maru, T. Hakuta, Y. Abe, M.Ito, S. Himi, H. Uetsuka and T. Mizumoto, "Spot-size converter using vertical ridge taper for low fiber-coupling loss in 2.5%-<TEX>$\Delta$</TEX> silica waveguides," Electron. Lett., vol. 42, pp. 219-220, 2006
[CrossRef]

Lightwave Technology, Journal of (1)

Regis S. Fan and R. Brian Hooker, "Tapered Polymer Single-Mode Waveguides for Mode Transformation," J. Lightwave Technol., vol. 17, pp. 466-474, 1999
[CrossRef]

Photonics Technology Letters, IEEE (2)

T. Mizuno, T. Kitoh, M. Ishii, Y. Inoue, T. Saida, M. Itoh, T. Shibata, and Y. Hibino, "Compact and lowloss arrayed waveguide grating module with tolerancerelaxed spot-size converter," IEEE Photon. Technol.Lett., vol. 15, pp. 239-241, 2003
[CrossRef]

K. Kasaya, O. Mitomi, M. Naganuma, Y. Kondo, and Y. Noguchi, "A simple laterally tapered waveguide for low-loss coupling to single-mode fibers," IEEE Photon. Technol. Lett., vol. 5, pp. 345-347, 1993
[CrossRef]

Selected Topics in Quantum Electronics, IEEE Journal of (1)

Y. Hibino, "Recent Advances in High-Density and Large- Scale AWG Multi/Demultiplexers with Higher Index- Contrast Silica-Based PLCs," IEEE, J. Sel. Topics. Quantum Electron., vol. 8, pp. 1090-1101, 2002
[CrossRef]

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