Self-induced optical non-reciprocity

Zhu-Bo Wang; Yan-Lei Zhang; Xin-Xin Hu; Guang-Jie Chen; Ming Li; Peng-Fei Yang; Xu-Bo Zou; Peng-Fei Zhang; Chun-Hua Dong; Gang Li; Tian-Cai Zhang; Guang-Can Guo; Chang-Ling Zou

doi:10.1038/s41377-024-01692-y

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Self-induced optical non-reciprocity

Original Articles

- Self-induced optical non-reciprocity
- Light: Science & Applications Vol. 14, Issue 1, Pages: 249-257(2025)
- Affiliations：
  
  1.CAS Key Laboratory of Quantum Information & CAS Center For Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, China
  2.State Key Laboratory of Quantum Optics and Quantum Optics Devices, and Institute of Opto-Electronics, Shanxi University, Taiyuan, 030006, China
  3.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China
- Author bio：
  
  Peng-Fei Zhang (zhangpengfei@sxu.edu.cn)
  Chun-Hua Dong (chunhua@ustc.edu.cn)
  Gang Li (gangli@sxu.edu.cn)
  Chang-Ling Zou (clzou321@ustc.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01692-y
  CLC：
- Published：31 January 2025，
  
  Published Online：02 January 2025，
  
  Received：14 April 2024，
  
  Revised：02 November 2024，
  
  Accepted：2024-11-13
- Accepted：
Scan QR Code
Wang, Z. B. et al. Self-induced optical non-reciprocity. Light: Science & Applications, 14, 249-257 (2025).
DOI：

Wang, Z. B. et al. Self-induced optical non-reciprocity. Light: Science & Applications, 14, 249-257 (2025). DOI： 10.1038/s41377-024-01692-y.

摘要

Abstract

Non-reciprocal optical components are indispensable in optical applications

and their realization without any magnetic field has attracted increasing research interest in photonics. Exciting experimental progress has been achieved by either introducing spatial-temporal modulation of the optical medium or combining Kerr-type optical nonlinearity with spatial asymmetry in photonic structures. However

extra driving fields are required for the first approach

while the isolation of noise and the transmission of the signal cannot be simultaneously achieved for the other approach. Here

we propose the mechanism of nonlinear non-reciprocal susceptibility for optical media and experimentally realize the self-induced isolation of optical signals without any external bias field. The self-induced isolation by the input signal is demonstrated with an extremely high isolation ratio of 63.4 dB

a bandwidth of 2.1 GHz for 60 dB isolation

and a low insertion loss of ~1 dB. Furthermore

the new mechanism allows novel functional optical devices

including polarization purification and non-reciprocal leverage. A complete passive isolator

is realized by introducing an asymmetry cavity. It is demonstrated that the 70

W signal could lever the non-reciprocity and realize a 30 dB isolation of the backward laser with a power 100 times higher. The demonstrated nonlinear non-reciprocal medium provides a versatile tool to control light and deepen our understanding of light-matter interactions and enables applications ranging from topological photonics to unidirectional quantum information transfer in a network.

关键词

Keywords

references

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