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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 19, Iss. 4 — Apr. 1, 2001
  • pp: 512–

Design and Characterization of Compact Single-Section Passive Polarization Rotator

B. M. A. Rahman, S. S. A. Obayya, N. Somasiri, M. Rajarajan, K. T. V. Grattan, and H. A. El-Mikathi

Journal of Lightwave Technology, Vol. 19, Issue 4, pp. 512- (2001)

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In this paper, an improved design for a short and low-loss polarization rotator is proposed, consisting of a single-section asymmetrical waveguide butt-coupled between two standard rib waveguides. At a wavelength of 1.55 m, nearly 100% polarization conversion ratio is obtained, with a relatively short (320 m) device length and an extremely low 0.5 dB total insertion loss. The simulation results are obtained using the full vectorial finite-element-based beam propagation, the junction analysis, and the modal solution approaches.


B. M. A. Rahman, S. S. A. Obayya, N. Somasiri, M. Rajarajan, K. T. V. Grattan, and H. A. El-Mikathi, "Design and Characterization of Compact Single-Section Passive Polarization Rotator," J. Lightwave Technol. 19, 512- (2001)

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  1. R. C. Alferness and L. L. Buhl, "High-speed waveguide electro-optic polarization modulator", Opt. Lett., vol. 7, pp. 500-502, 1982.
  2. S. S. A. Obayya, B. M. A. Rahman and H. A. El-Mikati, "New full-vectorial numerically efficient propagation algorithm based on the finite element method", J. Lightwave Technol., vol. 18, pp. 409-415, Mar. 2000.
  3. B. M. A. Rahman and J. B. Davies, "Analysis of optical waveguide discontinuities", J. Lightwave Technol., vol. 6, pp. 52-57, 1988.
  4. M. Rajarajan, B. M. A. Rahman, T. Wongcharoen and K. T. V. Grattan, "Accurate characterization of MMI devices with 2-dimensional confinement", J. Lightwave Technol., vol. 14, pp. 2078-2084, 1996.

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