Mirror-induced reflection in the frequency domain

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

4 Scopus Citations
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Author(s)

  • Yaowen Hu
  • Mengjie Yu
  • Neil Sinclair
  • Di Zhu
  • Rebecca Cheng
  • Marko Lončar

Detail(s)

Original languageEnglish
Article number6293
Journal / PublicationNature Communications
Volume13
Online published22 Oct 2022
Publication statusPublished - 2022

Link(s)

Abstract

Mirrors are ubiquitous in optics and are used to control the propagation of optical signals in space. Here we propose and demonstrate frequency domain mirrors that provide reflections of the optical energy in a frequency synthetic dimension, using electro-optic modulation. First, we theoretically explore the concept of frequency mirrors with the investigation of propagation loss, and reflectivity in the frequency domain. Next, we explore the mirror formed through polarization mode-splitting in a thin-film lithium niobate micro-resonator. By exciting the Bloch waves of the synthetic frequency crystal with different wave vectors, we show various states formed by the interference between forward propagating and reflected waves. Finally, we expand on this idea, and generate tunable frequency mirrors as well as demonstrate trapped states formed by these mirrors using coupled lithium niobate micro-resonators. The ability to control the flow of light in the frequency domain could enable a wide range of applications, including the study of random walks, boson sampling, frequency comb sources, optical computation, and topological photonics. Furthermore, demonstration of optical elements such as cavities, lasers, and photonic crystals in the frequency domain, may be possible.

Research Area(s)

Citation Format(s)

Mirror-induced reflection in the frequency domain. / Hu, Yaowen; Yu, Mengjie; Sinclair, Neil et al.
In: Nature Communications, Vol. 13, 6293, 2022.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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