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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 26, Iss. 12 — Jun. 15, 2008
  • pp: 1708–1714

A Short Polarization Converter Using a Triangular Waveguide

Junji Yamauchi, Masahiro Yamanoue, and Hisamatsu Nakano

Journal of Lightwave Technology, Vol. 26, Issue 12, pp. 1708-1714 (2008)

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A novel polarization converter using a triangular waveguide is proposed and analyzed by the imaginary-distance beam-propagation method based on Yee's mesh and the finite-difference time-domain method. The polarization conversion length is investigated as a function of relative refractive index difference. It is found, for a silicon core embedded in a silica cladding, that the conversion length is 2 $\mu$m, while the insertion loss is 0.5 dB at a wavelength of 1.55 $\mu$m. The extinction ratio is more than 20 dB over a wide wavelength range of 1.25 to 1.65 $\mu$m. Using a geometrically expanded model, the polarization conversion behavior is verified in the experiment at a microwave frequency of 15 GHz. Finally, reasonable polarization conversion is obtained with a modified structure, in which the two corners of the triangular waveguide are cut and the cut plane is aligned with a square input (output) waveguide.

© 2008 IEEE

Junji Yamauchi, Masahiro Yamanoue, and Hisamatsu Nakano, "A Short Polarization Converter Using a Triangular Waveguide," J. Lightwave Technol. 26, 1708-1714 (2008)

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  1. T. Barwicz, M. R. Watts, M. A. Popović, P. T. Rakich, L. Socci, F. X. Kärtner, E. P. Ippen, H. I. Smith, "Polarization-transparent microphotonic devices in the strong confinement limit," Nature Photon. 1, 57-60 (2007).
  2. Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, "Polarization rotation in asymmetric periodic loaded rib waveguides," Apply. Phys. Lett. 59, 1278-1280 (1991).
  3. V. P. Tzolov, M. Fontaine, "A passive polarization converter free of longitudinally-periodic structure," Opt. Commun. 127, 7-13 (1996).
  4. J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood Jr., "Realization of a compact and single-mode optical passive polarization converter," IEEE Photon. Technol. Lett. 12, 317-319 (2000).
  5. B. M. A. Rahman, S. S. A. Obayya, N. Somasiri, M. Rajarajan, K. T. V. Grattan, H. A. El-Mikathi, "Design and characterization of compact single-section passive polarization rotator," J. Lightw. Technol. 19, 512-519 (2001).
  6. D. Correia, J. P. da Silva, H. E. Hernández-Figueroa, "Genetic algorithm and finite-element design of short single-section passive polarization converter," IEEE Photon. Technol. Lett. 15, 915-917 (2003).
  7. J. Yamauchi, I. Ohba, T. Ando, H. Nakano, "FDTD analysis of a polarization conversion waveguide with a single sloped sidewall," Integ. Photon. Res. (2003) pp. 198-200.
  8. H. Deng, D. O. Yevick, C. Brooks, P. E. Jessop, "Design rules for slanted-angle polarization rotators," J. Lightw. Technol. 23, 432-445 (2005).
  9. L. M. Augustin, J. J. G. M. van der Tol, E. J. Geluk, M. K. Smit, "Short polarization converter optimized for active-passive integration in InGaAsP-InP," IEEE Photon. Technol. Lett. 19, 1673-1675 (2007).
  10. M. R. Watts, H. A. Haus, "Integrated mode-evolution-based polarization rotators," Opt. Lett. 30, 138-140 (2005).
  11. H. Fukuda, K. Yamada, T. Tsuchizawa, T. Watanabe, S. Itabashi, "Ultrasmall and wideband polarization rotator based on silicon wire waveguides," Integ. Photon. Nanophoton. Res. Appl. (2007).
  12. J. Yamauchi, M. Yamanoue, H. Nakano, "An extremely short polarization converter using a triangular waveguide," Integ. Photon. Nanophoton. Res. Appl. (2007).
  13. S. M. Lee, "Finite-difference vectorial-beam-propagation method using Yee's discretization scheme for modal fields," J. Opt. Soc. Amer. A 13, 1369-1377 (1996).
  14. G. R. Hadley, "Transparent boundary condition for beam propagation," Opt. Lett. 16, 624-626 (1991).
  15. D. Marcuse, "Excitation of the dominant mode of a round fiber by a Gaussian beam," Bell Syst. Tech. J. 49, 1695-1703 (1970).
  16. C. Vassallo, "On a rigorous calculation of the efficiency for coupling light power into optical waveguides," IEEE J. Quantum Electron. QE-13, 165-173 (1977).
  17. Handbook of Optical Constants of Solids (Academic, 1985) pp. 547-569.
  18. L. M. Johnson, D. Yap, "Theoretical analysis of coherently coupled optical waveguide bends," Appl. Opt. 23, 2988-2990 (1984).
  19. T. Ando, T. Murata, H. Nakayama, J. Yamauchi, H. Nakano, "Analysis and measurement of polarization conversion in a periodically loaded dielectric waveguide," IEEE Photon. Technol. Lett. 14, 1288-1290 (2002).

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