Title :
Modal Behavior of Photonic Crystal Tapers for Improved Coupling Toward Cleaved-Facet Single-Mode Fiber
Author :
Lee, Ko-Hsin ; Guilet, Stephane ; Merghem, Kamel ; Sagnes, Isabelle ; Talneau, Anne
Author_Institution :
Lab. for Photonics & Nanostruct. (LPN), Marcoussis, France
Abstract :
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 mum-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.
Keywords :
finite difference time-domain analysis; holey fibres; integrated optics; optical waveguides; photonic crystals; 2D finite difference time domain calculation; Gaussian curve; InP; cleaved facet single mode fiber; far field pattern; photonic crystal taper modal behavior; size 34.4 mum; Integrated optics; mode converter; photonic crystal; taper waveguide;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2030696
