Scholarlink

<p>We designed and fabricated a SOI based insertion loss non-uniformity enhanced star coupler with improved total transmission. The design utilizes a ‘squeeze’ dual input taper with auxiliary input taper placed right next to the central input taper. The specially designed taper structure transforms the fundamental Gaussian-shaped input profile at the entry of the free propagation region into a sinc mode field which produces a flat-top far field profile at the output waveguides array, without adding to the overall device footprint.</p>

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Silicon-based star coupler power splitter with enhanced non-uniformity

  • 期刊论文

  • 发表日期：

    2025年1月11日

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  • Yu Tian,
  • Vahram Voskerchyan,
  • Francisco Soares,
  • Francisco J. Diaz Otero

摘要

We designed and fabricated a SOI based insertion loss non-uniformity enhanced star coupler with improved total transmission. The design utilizes a ‘squeeze’ dual input taper with auxiliary input taper placed right next to the central input taper. The specially designed taper structure transforms the fundamental Gaussian-shaped input profile at the entry of the free propagation region into a sinc mode field which produces a flat-top far field profile at the output waveguides array, without adding to the overall device footprint.