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Off-chip beam steering with a one-dimensional optical phased array on silicon-on-insulator.

Authors
  • Van Acoleyen, Karel1
  • Bogaerts, Wim
  • Jágerská, Jana
  • Le Thomas, Nicolas
  • Houdré, Romuald
  • Baets, Roel
  • 1 Photonics Research Group, Ghent University-Interuniversity MicroElectronics Center, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium. [email protected] , (Belgium)
Type
Published Article
Journal
Optics letters
Publication Date
May 01, 2009
Volume
34
Issue
9
Pages
1477–1479
Identifiers
PMID: 19412311
Source
Medline
License
Unknown

Abstract

Optical phased arrays are versatile components enabling rapid and precise beam steering. An integrated approach is followed in which a 1D optical phased array is fabricated on silicon-on-insulator. The optical phased array consists of 16 parallel grating couplers spaced 2 mum apart. Steering in one direction is done thermo-optically by means of a titanium electrode on top of the structure using the phased array principle, while steering in the other direction is accomplished by wavelength tuning. At a wavelength of 1550 nm, continuous thermo-optical steering of 2.3 degrees and wavelength steering of 14.1 degrees is reported.

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