Slow pulses in disordered photonic-crystal waveguides |
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Authors: | Mazoyer Simon Baron Alexandre Hugonin Jean-Paul Lalanne Philippe Melloni Andrea |
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Affiliation: | Laboratoire Charles Fabry de l’Institut d’Optique, CNRS, Univ Paris-Sud, Campus Polytechnique, RD 128, 91127 Palaiseau Cedex, France. |
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Abstract: | Using a 3D fully-vectorial coupled Bloch-mode method, we present a systematic study of the transport of slow-light pulses in single-mode photonic-crystal waveguides (PhCW) with a realistic disorder model. For the intermediate regime corresponding to waveguide lengths of the order of the mean-free path (3 dB attenuation), we show that the group-velocity has a strong impact on the pulse broadening and distortion, limiting the practical use of PhCW to group indices below ≈50. For smaller group velocities, the pulse experiences an additional delay and the group-velocity is no longer a meaningful quantity. |
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