Abstract

This paper describes a semivectorial wide-angle finite-element beam propagation method (FE-BPM) that uses the Pade approximation and that can allow efficient and accurate analyzes of the polarization dependence in arbitrary step-index optical waveguide devices. It also reports the use of this method to analyze the polarization dependence of coupling loss between a semiconductor tapered-waveguide spot-size converter and a single-mode optical fiber. It is shown that semiconductor spot-size converters having cores with a small cross-section provide low-loss and polarization-insensitive coupling to flat-end fibers. A low-loss (far less than 1 dB) and completely polarization-insensitive spot-size converter can be made using a lightly n-doped InP substrate for the tapered waveguide. These spot-size converters are consequently potentially useful for making polarization-insensitive semiconductor optical devices such as optical amplifier gate switches.

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  1. O. Mitomi, K. Kasaya, Y. Tohmori, Y. Suzaki, H. Fukano, Y. Sakai, M. Okamoto, and S. Matsumoto, "Optical spot-size converters for low-loss coupling between fibers and optoelectronic semiconductor devices," J. Lightwave Technol., vol. 14, pp. 1714-1720, 1996.
  2. Y. Suzaki, O. Mitomi, Y. Kondo, Y. Sakai, Y. Kawaguchi, Y. Tohmori, Y. Kadato, and M. Yamamoto, "High-coupling efficiency of a 1.3- m spot-size converter integrated laser diode with pn-buried heterosyructure for high-temperature operation," J. Lightwave Technol., vol. 15, pp. 1602-1607, 1997.
  3. Y. Tsuji, M. Koshiba, and T. Shiraishi, "Finite element beam propagation method for three-dimensional optical waveguide structures," J. Lightwave Technol., vol. 15, pp. 1728-1734, 1997.
  4. D. Schulz, C. Glingener, M. Bludszuweit, and E. Voges, "Mixed finite element beam propagation method," J. Lightwave Technol., vol. 16, pp. 1336-1342, 1998.
  5. E. Montanari, S. Selleri, L. Vincetti, and M. Zoboli, "Finite-element full-vectorial propagation analysis for three-dimensional z-varying optical waveguides," J. Lightwave Technol., vol. 16, pp. 703-714, 1998.
  6. Y. Arai, A. Maruta, and M. Matsuhara, "Transparent boundary for the finite-element beam-propagation method," Opt. Lett., vol. 18, pp. 765-766, 1993.
  7. G. R. Hadlay, "Multistep method for wide-angle beam propagation," Opt. Lett., vol. 17, pp. 1743-1745, 1992.

J. Lightwave Technol. (5)

O. Mitomi, K. Kasaya, Y. Tohmori, Y. Suzaki, H. Fukano, Y. Sakai, M. Okamoto, and S. Matsumoto, "Optical spot-size converters for low-loss coupling between fibers and optoelectronic semiconductor devices," J. Lightwave Technol., vol. 14, pp. 1714-1720, 1996.

Y. Suzaki, O. Mitomi, Y. Kondo, Y. Sakai, Y. Kawaguchi, Y. Tohmori, Y. Kadato, and M. Yamamoto, "High-coupling efficiency of a 1.3- m spot-size converter integrated laser diode with pn-buried heterosyructure for high-temperature operation," J. Lightwave Technol., vol. 15, pp. 1602-1607, 1997.

Y. Tsuji, M. Koshiba, and T. Shiraishi, "Finite element beam propagation method for three-dimensional optical waveguide structures," J. Lightwave Technol., vol. 15, pp. 1728-1734, 1997.

D. Schulz, C. Glingener, M. Bludszuweit, and E. Voges, "Mixed finite element beam propagation method," J. Lightwave Technol., vol. 16, pp. 1336-1342, 1998.

E. Montanari, S. Selleri, L. Vincetti, and M. Zoboli, "Finite-element full-vectorial propagation analysis for three-dimensional z-varying optical waveguides," J. Lightwave Technol., vol. 16, pp. 703-714, 1998.

Opt. Lett. (2)

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