Quasi-anti-parity–time-symmetric single-resonator micro-optical gyroscope with Kerr nonlinearity  

作　　者：耿靖童 徐书逸 靳婷 丁舒林 杨柳 王颖 张勇刚 Jingtong Geng;Shuyi Xu;Ting Jin;Shulin Ding;Liu Yang;Ying Wang;Yonggang Zhang(College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China;National Laboratory of Solid State Microstructures,School of Physics,and College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China)

机构地区：[1]College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China [2]National Laboratory of Solid State Microstructures,School of Physics,and College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China

出　　处：《Chinese Physics B》2024年第1期436-440,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.62273115,62173105);the Fundamental Research Funds for the Central Universities (Grant No.3072022FSC0401)。

摘　　要：Parity–time(PT) and quasi-anti-parity–time(quasi-APT) symmetric optical gyroscopes have been proposed recently which enhance Sagnac frequency splitting. However, the operation of gyroscopes at the exceptional point(EP) is challenging due to strict fabrication requirements and experimental uncertainties. We propose a new quasi-APT-symmetric micro-optical gyroscope which can be operated at the EP by easily shifting the Kerr nonlinearity. A single resonator is used as the core sensitive component of the quasi-APT-symmetric optical gyroscope to reduce the size, overcome the strict structural requirements and detect small rotation rates. Moreover, the proposed scheme also has an easy readout method for the frequency splitting. As a result, the device achieves a frequency splitting 10~5 times higher than that of a classical resonant optical gyroscope with the Earth's rotation. This proposal paves the way for a new and valuable method for the engineering of micro-optical gyroscopes.

关 键 词：optical gyroscopes quasi-anti-parity–time(quasi-APT)symmetric system exceptional point(EP) the Kerr nonlinearity 

分 类 号：TN256[电子电信—物理电子学]