High-order dispersion in photonic crystal waveguides

Solomon Assefa; Yurii A. Vlasov

doi:10.1364/OE.15.017562

High-order dispersion in photonic crystal waveguides

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

Abstract

High-order dispersion in the slow-light regime of photonic crystal (PhC) waveguides was measured by utilizing integrated Mach-Zehnder interferometer (MZI) structures, and compared with theoretical results obtained from 3D plane-wave calculations. Highly accurate measurements of group-velocity dispersion (GVD), third-order dispersion (TOD) and fourth-order dispersion (FOD) at high group-index (n_g) values were enabled by minimizing external phase-distortions and increasing signal-to-noise ratio in the MZI. The experimental results for GVD, TOD, and FOD parameters at n_g∼100 were ∼10²ps²/mm, ∼10⁴ps³/mm, and ∼10⁵ps³/mm respectively. The results emphasize the importance of taking into consideration the effect of TOD and FOD on pulse broadening in the slow-light regime.

Original language	English (US)
Pages (from-to)	17562-17569
Number of pages	8
Journal	Optics Express
Volume	15
Issue number	26
DOIs	https://doi.org/10.1364/OE.15.017562
State	Published - Dec 24 2007
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.15.017562

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abstract = "High-order dispersion in the slow-light regime of photonic crystal (PhC) waveguides was measured by utilizing integrated Mach-Zehnder interferometer (MZI) structures, and compared with theoretical results obtained from 3D plane-wave calculations. Highly accurate measurements of group-velocity dispersion (GVD), third-order dispersion (TOD) and fourth-order dispersion (FOD) at high group-index (ng) values were enabled by minimizing external phase-distortions and increasing signal-to-noise ratio in the MZI. The experimental results for GVD, TOD, and FOD parameters at ng∼100 were ∼102ps2/mm, ∼104ps3/mm, and ∼105ps3/mm respectively. The results emphasize the importance of taking into consideration the effect of TOD and FOD on pulse broadening in the slow-light regime.",

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AB - High-order dispersion in the slow-light regime of photonic crystal (PhC) waveguides was measured by utilizing integrated Mach-Zehnder interferometer (MZI) structures, and compared with theoretical results obtained from 3D plane-wave calculations. Highly accurate measurements of group-velocity dispersion (GVD), third-order dispersion (TOD) and fourth-order dispersion (FOD) at high group-index (ng) values were enabled by minimizing external phase-distortions and increasing signal-to-noise ratio in the MZI. The experimental results for GVD, TOD, and FOD parameters at ng∼100 were ∼102ps2/mm, ∼104ps3/mm, and ∼105ps3/mm respectively. The results emphasize the importance of taking into consideration the effect of TOD and FOD on pulse broadening in the slow-light regime.

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High-order dispersion in photonic crystal waveguides

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