Acousto-optic modulation of photonic bound state in the continuum

Yu Zejie; Sun Xiankai

doi:10.1038/s41377-019-0231-1

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Acousto-optic modulation of photonic bound state in the continuum

Article

- Acousto-optic modulation of photonic bound state in the continuum
- Acousto-optic modulation of photonic bound state in the continuum
- LSA 2020年9卷第1期页码：33-41
- Affiliations：
  
  Department of Electronic Engineering, The Chinese University of Hong Kong
- Author bio：
  
  Xiankai Sun (xksun@cuhk.edu.hk)
- Funds：
- DOI：10.1038/s41377-019-0231-1
  中图分类号：
- 纸质出版日期：2020，
  
  网络出版日期：2020-01-01，
  
  收稿日期：2019-06-20，
  
  修回日期：2019-11-26，
  
  录用日期：2019-11-28
- Accepted：
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Acousto-optic modulation of photonic bound state in the continuum[J]. LSA, 2020,9(1):33-41.

Yu, Z. J. & Sun, X.K. Acousto-optic modulation of photonic bound state in the continuum. Light: Science & Applications, 9, 33–41 (2020).
Acousto-optic modulation of photonic bound state in the continuum[J]. LSA, 2020,9(1):33-41. DOI： 10.1038/s41377-019-0231-1.

Yu, Z. J. & Sun, X.K. Acousto-optic modulation of photonic bound state in the continuum. Light: Science & Applications, 9, 33–41 (2020). DOI： 10.1038/s41377-019-0231-1.

摘要

Abstract

Photonic bound states in the continuum (BICs) have recently been studied in various systems and have found wide applications in sensors

lasers

and filters. Applying BICs in photonic integrated circuits enables low-loss light guidance and routing in low-refractive-index waveguides on high-refractive-index substrates

which opens a new avenue for integrated photonics with functional single-crystal materials. Here

we demonstrate high-quality integrated lithium niobate microcavities inside which the photonic BIC modes circulate and further modulate these BIC modes acoustooptically by using piezoelectrically actuated surface acoustic waves at microwave frequencies. With a high acoustooptic modulation frequency

the acousto-optic coupling is well situated in the resolved-sideband regime. This leads to coherent coupling between microwave and optical photons

which is exhibited by the observed electro-acoustooptically induced transparency and absorption. Therefore

our devices serve as a paradigm for manipulating and controlling photonic BICs on a chip

which will enable many other applications of photonic BICs in the areas of microwave photonics and quantum information processing.

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references

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