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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 27, Iss. 22 — Nov. 15, 2009
  • pp: 5168–5172

Modal Behavior of Photonic Crystal Tapers for Improved Coupling Toward Cleaved-Facet Single-Mode Fiber

Ko-Hsin Lee, Stephane Guilet, Kamel Merghem, Isabelle Sagnes, and Anne Talneau

Journal of Lightwave Technology, Vol. 27, Issue 22, pp. 5168-5172 (2009)

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We report simulation and experiment results of modal behaviors of photonic crystal (PhC) tapers on InP-based materials designed to improve coupling efficiency of the PhC waveguide mode into a cleaved-facet single-mode fiber. The modal distributions of transmitted power are simulated by two-dimensional finite difference time domain (2D-FDTD) calculation and the measured far-field patterns are in agreement with these calculations. The 34.4 $\mu$m-long PhC taper with Gaussian curve geometry is demonstrated to have an enhancement of coupling efficiency by a factor of four compared to the direct coupling from a W3 PhC defect waveguide.

© 2009 IEEE

Ko-Hsin Lee, Stephane Guilet, Kamel Merghem, Isabelle Sagnes, and Anne Talneau, "Modal Behavior of Photonic Crystal Tapers for Improved Coupling Toward Cleaved-Facet Single-Mode Fiber," J. Lightwave Technol. 27, 5168-5172 (2009)

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