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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 26 — Dec. 20, 2010
  • pp: 27404–27415

Compact broadband polarizer based on shallowly-etched silicon-on-insulator ridge optical waveguides

Daoxin Dai, Zhi Wang, Nick Julian, and John E. Bowers  »View Author Affiliations

Optics Express, Vol. 18, Issue 26, pp. 27404-27415 (2010)

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A new way to make broadband polarizers on silicon-on-insulator (SOI) waveguides is proposed, analyzed and characterized. The characteristics of the eigenmodes in a shallowly-etched SOI ridge optical waveguide are analyzed by using a full-vectorial finite-different method (FV-FDM) mode solver. The theoretical calculation shows that the loss of TE fundamental mode could be made very low while at the same time the TM fundamental mode has very large leakage loss, which is strongly dependent on the trench width. The leakage loss of the TM fundamental mode changes quasi-periodically as the trench width wtr varies. The formula of the period ∆wtr is given. By utilizing the huge polarization dependent loss of this kind of waveguide, a compact and simple optical polarizer based on a straight waveguide was demonstrated. The polarizer is fabricated on a 700nm-thick SOI wafer and then characterized by using a free-space optical system. The measured extinction ratio is as high as 25dB over a 100nm wavelength range for a 1mm-long polarizer.

© 2010 OSA

OCIS Codes
(230.5440) Optical devices : Polarization-selective devices
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Optical Devices

Original Manuscript: October 11, 2010
Revised Manuscript: November 16, 2010
Manuscript Accepted: November 23, 2010
Published: December 14, 2010

Daoxin Dai, Zhi Wang, Nick Julian, and John E. Bowers, "Compact broadband polarizer based on shallowly-etched silicon-on-insulator ridge optical waveguides," Opt. Express 18, 27404-27415 (2010)

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  1. Y. Kokubun and S. Asakawa, “ARROW-type polarizer utilizing form birefringence in multilayer first cladding,” IEEE Photon. Technol. Lett. 5(12), 1418–1420 (1993). [CrossRef]
  2. L. Pierantoni, A. Massaro, and T. Rozzi, “Accurate modeling of TE/TM propagation and losses of integrated optical polarizer,” IEEE Trans. Microw. Theory Tech. 53(6), 1856–1862 (2005). [CrossRef]
  3. M. A. Duguay, Y. Kokubun, T. L. Koch, and L. Pfeiffer, “Antiresonant reflecting optical waveguides in Si02-Si multilayer structures,” Appl. Phys. Lett. 49(1), 13–15 (1986). [CrossRef]
  4. T. Yamazaki, J. Yamauchi, and H. Nakano, “A branch-type TE/TM wave splitter using a light-guiding metal line,” J. Lightwave Technol. 25(3), 922–928 (2007). [CrossRef]
  5. L. Z. Sun and G. L. Yip, “Analysis of metal-clad optical waveguide polarizers by the vector beam propagation method,” Appl. Opt. 33(6), 1047–1050 (1994). [PubMed]
  6. G. Y. Li and A. S. Xu, “Analysis of the TE-pass or TM-pass metal-clad polarizer with a resonant buffer layer,” J. Lightwave Technol. 26(10), 1234–1241 (2008). [CrossRef]
  7. R. Wan, F. Liu, X. Tang, Y. Huang, and J. Peng, “Vertical coupling between short range surface plasmon polariton mode and dielectric waveguide mode,” Appl. Phys. Lett. 94(14), 141104 (2009). [CrossRef]
  8. R.-C. Twu, C.-C. Huang, and W.-S. Wang, “TE-pass Zn-diffused liNbO3 waveguide polarizer,” Microw. Opt. Technol. Lett. 48(11), 2312–2314 (2006). [CrossRef]
  9. Y. Cui, Q. Wu, E. Schonbrun, M. Tinker, J.-B. Lee, and W. Park, “Silicon-based 2-D slab photonic crystal tm polarizer at telecommunication wavelength,” IEEE Photon. Technol. Lett. 20(8), 641–643 (2008). [CrossRef]
  10. A. d’Alessandro, B. Bellini, D. Donisi, R. Beccherelli, and R. Asquini, “Nematic Liquid Crystal Optical Channel Waveguides on Silicon,” IEEE J. Quantum Electron. 42(10), 1084–1090 (2006). [CrossRef]
  11. D. Liang and J. E. Bowers, “Recent progress in lasers on silicon,” Nat. Photonics 4(8), 511–517 (2010). [CrossRef]
  12. Q. Wang and S. T. Ho, “Ultracompact TM-pass silicon nanophotonic waveguide polarizer and design,” IEEE J. Photon. 2(1), 49–56 (2010). [CrossRef]
  13. A. A. Oliner, S. T. Peng, T. I. Hsu, and A. Sanchez, “Guidance and leakage properties of a class of open dielectric waveguides: Part II-New physical effects,” IEEE Trans. Microw. Theory Tech. 29(9), 855–869 (1981). [CrossRef]
  14. K. Ogusu, “Optical strip waveguide: a detailed analysis including leaky modes,” J. Opt. Soc. Am. 73(3), 353–357 (1983). [CrossRef]
  15. M. A. Webster, R. M. Pafchek, A. Mitchell, and T. L. Koch, “Width dependence of inherent tm-mode lateral leakage loss in silicon-on-insulator ridge waveguides,” IEEE Photon. Technol. Lett. 19(6), 429–431 (2007). [CrossRef]

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