Sensitivity enhancement of micro-optical gyro with photonic crystal  

作　　者：Liu Yang Shuhua Zhao Jingtong Geng Bing Xue Yonggang Zhang 杨柳;赵舒华;耿靖童;薛冰;张勇刚(College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]College of Intelligent Systems Science and Engineering,Harbin Engineering University,Harbin 150001,China

出　　处：《Chinese Physics B》2021年第4期271-276,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11804066 and 61773133);Heilongjiang Provincial Natural Science Foundation of China(Grant No.LH2019A005);China Postdoctoral Science Foundation(Grant No.2018M630337);Heilongjiang Provincial Postdoctoral Science Foundation(Grant No.LBHZ18062)。

摘　　要：We propose a core rotation-sensing element for improving the sensitivity of the micro-optical gyroscope using the large nonreciprocal effect with a photonic crystal.The sharp transmission peak of electromagnetically induced transparency in photonic crystal generated from a periodic distribution of cold atoms is sensitive to the rotation.Our numerical results show that the sensitivity of relative rotation is about 50 times higher and the sensitivity of absolute rotation is more than two orders higher than that of the traditional resonant optical gyroscope.Also,the sensitivity of the gyroscope can be manipulated by varying the atomic density,modulation frequency,probe pulse width,and photonic crystal length,etc.

关 键 词：optical nonreciprocal effect photonic crystal micro-optical gyro high sensitivity 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]