High-order PT symmetry based optical sensor

被引：1
|
作者：
Wu, Yulin [1 ,3 ,4 ]
Zhou, Peiji [1 ]
Li, Ting [1 ,3 ,4 ]
Wan, Weishi [2 ]
Zou, Yi [1 ]
机构：
[1] ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 201210, Peoples R China
[2] ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
[3] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XXIV | 2020年 / 11283卷
基金：
中国国家自然科学基金;
关键词：
Ring resonators; Party-time symmetric optics; High-order exceptional points; Sensor; EXCEPTIONAL POINTS;
D O I：
10.1117/12.2546440
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We investigate a fourth-order PT symmetric optical sensor and analyze its eigenfrequency phase diagram. The four eigenfrequencies of our optical sensor simultaneously collapse at the high-order exceptional point in parameter space, providing a quarter root relation between the frequency splitting amount and the perturbation. A clear sensitivity boost is observed when comparing the frequency splitting with other optical sensors under small perturbation condition.
引用
收藏
页数：7
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