Unequally spaced waveguide arrays for silicon nanomembrane-based efficient large angle optical beam steering

Amir Hosseini, David Kwong, Yang Zhao, Yun Sheng Chen, Filip Crnogorac, R. Fabian W. Pease, Ray T. Chen

Research output: Contribution to journalArticle

Abstract

In this paper, we present a design methodology for silicon nanomembrane-based phased array structures with unequally spaced elements for large angle optical beam steering. By optimizing a dielectric waveguide structure for transverse-magnetic-polarized single-mode operation at wavelength of 1.55 μm, we show that a one-stage optical phased array allows 2-D ± 60° and ±45° optical beam scanning with minimal degradation in sidelobe level and power efficiency. The number of array elements necessary to realize the desired array performance depends on the fabrication technique, which is formulated in the presented design methodology.

Original languageEnglish (US)
Article number5175336
Pages (from-to)1439-1446
Number of pages8
JournalIEEE Journal on Selected Topics in Quantum Electronics
Volume15
Issue number5
DOIs
StatePublished - Sep 1 2009
Externally publishedYes

Keywords

  • Laser beam steering
  • Optical phased array
  • Silicon
  • Waveguide arrays

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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