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Arrayed waveguide lens for beam steering.

Mostafa Honari-Latifpour1,2, Ali Binaie1, Mohammad Amin Eftekhar3

  • 1Department of Physics, Queens College of the City University of New York, Queens, 11367, New York, USA.

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Summary
This summary is machine-generated.

This study presents a novel arrayed waveguide lens for integrated optical systems. This new design enables efficient beam steering with a wide field-of-view, overcoming challenges in conventional planar lens fabrication.

Keywords:
beam steeringintegrated waveguide lensesphotonic lattices

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Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Nanophotonics

Background:

  • Conventional planar lenses for optical information processing face challenges in on-chip realization due to complex gradient index control.
  • Beam steering is a key function for integrated photonic circuits in applications like imaging and sensing.

Purpose of the Study:

  • To introduce a novel approach for on-chip beam steering using an arrayed waveguide lens.
  • To demonstrate planar lensing and off-chip radiation simultaneously through engineered evanescent coupling.

Main Methods:

  • Design of an array of coupled waveguides with segmented tails.
  • Engineering evanescent coupling between adjacent waveguide channels.
  • Utilizing coupled-mode analysis and full-wave numerical simulations.

Main Results:

  • Achieved planar lensing and off-chip radiation with a single component.
  • Demonstrated beam steering with a large field-of-view of approximately 60 degrees.
  • Emulated a continuous parabolic index profile using a photonic lattice with equi-distant propagation constants.

Conclusions:

  • The proposed arrayed waveguide lens offers a compact and efficient solution for beam steering in integrated photonic circuits.
  • This technology can be applied to advanced imaging, sensing, and metrology systems.
  • The design overcomes fabrication challenges associated with traditional gradient index lenses.