Refractive index insensitive temperature sensor based on a photonic crystal nanobeam cavity

被引：0

作者：

Li, Xuepei ^{[1
]}

Wang, Chao ^{[1
]}

Wang, Zheng ^{[1
]}

Fu, Zhongyuan ^{[1
]}

Sun, Fujun ^{[1
]}

Tian, Huiping ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China

来源：

17TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS AND NETWORKS (ICOCN2018) | 2019年 / 11048卷

关键词：

photonic crystal; nanobeam; 3D-FDTD; temperature sensing;

D O I：

10.1117/12.2522602

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 present an ambient refractive index (RI) insensitive temperature sensor based on a Silicon-on-Insulator (SOI) ellipse stack major axis modulated photonic crystal (PC) nanobeam cavity (EPCNC). The PC nanobeam cavity is covered with SU-8 cladding to increase the temperature sensitivity by taking advantage of the relatively high thermooptic (TO) coefficient of SU-8 cladding. Three dimensional finite-difference time-domain (3D-FDTD) simulations are used for our analysis. The results show that the sensitivity of temperature sensing is-108.9pm/K. In particular, the proposed sensor not only achieves a competitive temperature sensitivity, but also eliminates the influence of ambient RI on sensing. Therefore, the proposed sensor is potentially a promising platform for future application of temperature sensing.

引用

页数：4

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