Circular dichroism property of conjugated gammadion meta-atom integrated on silicon waveguide

Chia Yi Lin, Yu Yu Chen, Pao Tai Lin, Shih Hui Gilbert Chang

Research output: Contribution to journalArticlepeer-review

Abstract

The circular dichroism (CD) performance of conjugated gammadion structure on the end facet of silicon waveguide in the mid-infrared regime is investigated theoretically. By engineering the orientation of the structure, the sign and value of its CD spectrum can be changed. For a fixed gammadion structure, different CD values can be obtained not only by changing the excitation wavelength but the excitation waveguide mode. This finding potentially provides an extra degree of freedom to design integrated chiral photonics chips.

Original languageEnglish
Article number032006
JournalApplied Physics Express
Volume14
Issue number3
DOIs
Publication statusPublished - 2021 Mar

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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