Polarimetric parity-time symmetry in a photonic system

Lingzhi Li; Yuan Cao; Yanyan Zhi; Jiejun Zhang; Yuting Zou; Xinhuan Feng; Bai-Ou Guan; Jianping Yao

doi:10.1038/s41377-020-00407-3

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Polarimetric parity-time symmetry in a photonic system

Original Articles

- Polarimetric parity-time symmetry in a photonic system
- Light: Science & Applications Vol. 9, Issue 5, Pages: 1630-1637(2020)
- Affiliations：
  
  1.Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 511442, China
  2.Microwave Photonics Research Laboratory, School of Electrical Engineering and Computer Science, University of Ottawa, Ottawa, ON K1N 6N5, Canada
- Author bio：
  
  Jiejun Zhang (zhangjiejun@jnu.edu.cn)
  Jianping Yao (jpyao@uottawa.ca)
- Funds：
- DOI：10.1038/s41377-020-00407-3
  CLC：
- Published：2020，
  
  Published Online：27 September 2020，
  
  Received：30 July 2020，
  
  Revised：09 September 2020，
  
  Accepted：10 September 2020
- Accepted：
Scan QR Code
Li, L. Z. et al. Polarimetric parity-time symmetry in a photonic system. Light: Science & Applications, 9, 1630-1637 (2020).
DOI：

Li, L. Z. et al. Polarimetric parity-time symmetry in a photonic system. Light: Science & Applications, 9, 1630-1637 (2020). DOI： 10.1038/s41377-020-00407-3.

摘要

Abstract

Parity-time (PT) symmetry has attracted intensive research interest in recent years. PT symmetry is conventionally implemented between two spatially distributed subspaces with identical localized eigenfrequencies and complementary gain and loss coefficients. The implementation is complicated. In this paper

we propose and demonstrate that PT symmetry can be implemented between two subspaces in a single spatial unit based on optical polarimetric diversity. By controlling the polarization states of light in the single spatial unit

the localized eigenfrequencies

gain

loss

and coupling coefficients of two polarimetric loops can be tuned

leading to PT symmetry breaking. As a demonstration

a fiber ring laser based on this concept supporting stable and single-mode lasing without using an ultranarrow bandpass filter is implemented.

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references

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