Sensing and Induced Transparency with a Synthetic Anti-PT Symmetric Optical Resonator

Haoye Qin; Yiheng Yin; Ming Ding

doi:10.1021/acsomega.0c05673

Sensing and Induced Transparency with a Synthetic Anti-PT Symmetric Optical Resonator

ACS Omega. 2021 Feb 13;6(8):5463-5470. doi: 10.1021/acsomega.0c05673. eCollection 2021 Mar 2.

Authors

Haoye Qin¹, Yiheng Yin², Ming Ding^{1

3}

Affiliations

¹ School of Instrumentation and Opto-Electronics Engineering, Beihang University, Beijing 100191, China.
² School of Microelectronics, Beihang University, Beijing 100191, China.
³ Research Institute of Frontier Science, Beihang University, Beijing 100191, China.

Abstract

Synthetic dimensions and anti-parity-time (anti-PT) symmetry have been recently proposed and experimentally demonstrated in a single optical resonator. Here, we present the effect of the rotation-induced frequency shift in a synthetic anti-PT symmetric resonator, which enables the realization of a directional rotation sensor with improved sensitivity at an exceptional point (EP) and transparency assisted optical nonreciprocity (TAON) in the symmetry-broken region. The orthogonal rotation of this system results in the direction-independent frequency shift and maintenance of the EP condition even with rotation. Tunable transparency at the EP can thus be fulfilled. Hopefully, the proposed mechanisms will contribute to the development of high-precision rotation sensors and all-optical isolators and make the study of the synthetic anti-PT symmetric EP with rotation possible.