Sensitivity Enhanced Refractive Index Sensor by Reducing the Influence of In-Plane Wavevector in Photonic Spin Hall Effect

被引：19

作者：

Sheng, Lijuan ^{[1
]}

Xie, Linguo ^{[2
]}

Luo, Huiling ^{[1
]}

Zhou, Xinxing ^{[1
,3
]}

Ling, Xiaohui ^{[4
]}

Zhang, Zhiyou ^{[2
]}

机构：

[1] Hunan Normal Univ, Sch Phys & Elect, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Hunan, Peoples R China

[2] Sichuan Univ, Minist Educ, Key Lab High Energy Dens Phys & Technol, Chengdu 610064, Sichuan, Peoples R China

[3] Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[4] Hengyang Normal Univ, Coll Phys & Elect Engn, Hunan Prov Key Lab Intelligent Informat Proc & Ap, Hengyang 421002, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2018年 / 10卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Photonic spin Hall effect; weak measurements; refractive index sensor; LIGHT;

D O I：

10.1109/JPHOT.2018.2873213

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：

Photonic spin Hall effect (SHE) can be an effective sensor for determining the refractive index (RI) variation of a sensing medium. How to further improve its sensitivity is a very interesting and important issue. In this paper, we theoretically propose a weak measurement method for enhancing the sensitivity of the photonic SHE-based RI sensor by reducing the influence of the in-plane wavevector. Of particular interest, our results indicate that the sensitivity of the presented configuration reaches about 3.16 x 10(-7) RIU/mu m which shows nearly two orders of magnitude improvement compared with the conventional one. Remarkably, this method can be applied for wide range of RI variation of the sensing medium while keeping the high sensitivity.

引用

页数：9

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