Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers

Naser Dalvand; Thach G. Nguyen; Thomas L. Koch; Arnan Mitchell

doi:10.1109/LPT.2012.2230620

Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers

Naser Dalvand, Thach G. Nguyen, Thomas L. Koch, Arnan Mitchell

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

11 Scopus citations

Abstract

We analyze transitions from low-loss 'magic' width to strongly radiating 'anti-magic' width thin, shallow-ridge silicon-on-insulator waveguides operating in the transverse magnetic mode, using a vector eigenmode expansion method. It is shown that the transition produces a beam of transverse electric (TE) radiation with a pattern, which is strongly dependent on the geometry of the transition. It is shown that controlled, highly coherent, and low-divergence TE beam can be emitted from a relatively compact linear taper. Methods for side lobe suppression are also analyzed and avenues for more sophisticated beam shaping are identified drawing inspiration from leaky wave antennas.

Original language	English (US)
Article number	6365228
Pages (from-to)	163-166
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	25
Issue number	2
DOIs	https://doi.org/10.1109/LPT.2012.2230620
State	Published - 2013

Keywords

Leaky wave antenna
silicon-on-insulator (SOI) waveguides
vector eigenmode expansion method

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2012.2230620

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title = "Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers",

abstract = "We analyze transitions from low-loss 'magic' width to strongly radiating 'anti-magic' width thin, shallow-ridge silicon-on-insulator waveguides operating in the transverse magnetic mode, using a vector eigenmode expansion method. It is shown that the transition produces a beam of transverse electric (TE) radiation with a pattern, which is strongly dependent on the geometry of the transition. It is shown that controlled, highly coherent, and low-divergence TE beam can be emitted from a relatively compact linear taper. Methods for side lobe suppression are also analyzed and avenues for more sophisticated beam shaping are identified drawing inspiration from leaky wave antennas.",

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AU - Dalvand, Naser

AU - Nguyen, Thach G.

AU - Koch, Thomas L.

AU - Mitchell, Arnan

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N2 - We analyze transitions from low-loss 'magic' width to strongly radiating 'anti-magic' width thin, shallow-ridge silicon-on-insulator waveguides operating in the transverse magnetic mode, using a vector eigenmode expansion method. It is shown that the transition produces a beam of transverse electric (TE) radiation with a pattern, which is strongly dependent on the geometry of the transition. It is shown that controlled, highly coherent, and low-divergence TE beam can be emitted from a relatively compact linear taper. Methods for side lobe suppression are also analyzed and avenues for more sophisticated beam shaping are identified drawing inspiration from leaky wave antennas.

AB - We analyze transitions from low-loss 'magic' width to strongly radiating 'anti-magic' width thin, shallow-ridge silicon-on-insulator waveguides operating in the transverse magnetic mode, using a vector eigenmode expansion method. It is shown that the transition produces a beam of transverse electric (TE) radiation with a pattern, which is strongly dependent on the geometry of the transition. It is shown that controlled, highly coherent, and low-divergence TE beam can be emitted from a relatively compact linear taper. Methods for side lobe suppression are also analyzed and avenues for more sophisticated beam shaping are identified drawing inspiration from leaky wave antennas.

KW - Leaky wave antenna

KW - silicon-on-insulator (SOI) waveguides

KW - vector eigenmode expansion method

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JF - IEEE Photonics Technology Letters

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Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers

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Keywords

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