Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides

Sangwoo Ha; Andrey A. Sukhorukov; Andrei V. Lavrinenko; Ilya V. Shadrivov; David A. Powell; Yuri S. Kivshar

doi:10.1063/1.3553785

Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides

Sangwoo Ha^*, Andrey A. Sukhorukov, Andrei V. Lavrinenko, Ilya V. Shadrivov, David A. Powell, Yuri S. Kivshar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We report the experimental observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides shifted longitudinally by half of modulation period. According to the symmetry analysis, such a coupler supports two electromagnetic modes with exactly matched slow or fast group velocities but different phase velocities for frequencies close to the edge of the photonic band. We confirm the predicted properties of the modes by directly extracting their dispersion and group velocities from the near-field measurements using specialized Bloch-wave spectral analysis method.

Original language	English
Article number	061909
Journal	Applied Physics Letters
Volume	98
Issue number	6
DOIs	https://doi.org/10.1063/1.3553785
Publication status	Published - 7 Feb 2011

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abstract = "We report the experimental observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides shifted longitudinally by half of modulation period. According to the symmetry analysis, such a coupler supports two electromagnetic modes with exactly matched slow or fast group velocities but different phase velocities for frequencies close to the edge of the photonic band. We confirm the predicted properties of the modes by directly extracting their dispersion and group velocities from the near-field measurements using specialized Bloch-wave spectral analysis method.",

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AU - Ha, Sangwoo

AU - Sukhorukov, Andrey A.

AU - Lavrinenko, Andrei V.

AU - Shadrivov, Ilya V.

AU - Powell, David A.

AU - Kivshar, Yuri S.

PY - 2011/2/7

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AB - We report the experimental observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides shifted longitudinally by half of modulation period. According to the symmetry analysis, such a coupler supports two electromagnetic modes with exactly matched slow or fast group velocities but different phase velocities for frequencies close to the edge of the photonic band. We confirm the predicted properties of the modes by directly extracting their dispersion and group velocities from the near-field measurements using specialized Bloch-wave spectral analysis method.

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VL - 98

JO - Applied Physics Letters

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ER -

Observation of tunneling of slow and fast electromagnetic modes in coupled periodic waveguides

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