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

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

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 languageEnglish (US)
Article number6365228
Pages (from-to)163-166
Number of pages4
JournalIEEE Photonics Technology Letters
Volume25
Issue number2
DOIs
StatePublished - 2013

Fingerprint

Silicon
tapering
ridges
Waveguides
insulators
Antennas
waveguides
Radiation
Geometry
silicon
inspiration
lobes
divergence
antennas
retarding
expansion
radiation
geometry

Keywords

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

ASJC Scopus subject areas

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

Cite this

Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers. / Dalvand, Naser; Nguyen, Thach G.; Koch, Thomas L; Mitchell, Arnan.

In: IEEE Photonics Technology Letters, Vol. 25, No. 2, 6365228, 2013, p. 163-166.

Research output: Contribution to journalArticle

Dalvand, Naser ; Nguyen, Thach G. ; Koch, Thomas L ; Mitchell, Arnan. / Thin shallow-ridge silicon-on-insulator waveguide transitions and tapers. In: IEEE Photonics Technology Letters. 2013 ; Vol. 25, No. 2. pp. 163-166.
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