Sensing Gases by the Pole Effect of Parity-Time Symmetric Coupled Resonators

被引：24

作者：

Fang, Yuntuan ^{[1
]}

Li, Xiaoxue ^{[1
]}

Xia, Jing ^{[1
]}

Xu, Zhibing ^{[2
]}

机构：

[1] Jiangsu Univ, Sch Comp Sci & Telecommun Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Anqing Normal Univ, Coll Resources & Environm, Anqing 246011, Peoples R China

来源：

IEEE SENSORS JOURNAL | 2019年 / 19卷 / 07期

基金：

美国国家科学基金会;

关键词：

Sensor; PT symmetry; pole effect; coupled resonator; SENSITIVITY; SENSOR;

D O I：

10.1109/JSEN.2018.2887084

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：

The pole is the unique phenomena in the parity-time (PT) symmetry structure. To explore the application of the pole effect, a PT-symmetry resonator coupling system is designed as a gas sensor. The large transmittance and reflectance near the pole are found extraordinary sensitive to the refractive index of the polluted air in the system. Through measuring the reflectance, the refractive index of the polluted air and the concentration of gas in the air can be detected. The sensor has an extraordinary sensitivity in detecting the gases with low concentration. The maximum sensitivities Delta R/R for the methane, acetylene, and ethane are 0.112, 0.190, and 0.282, respectively. The limitation of detectable concentration change is 1/1500 for methane with the photodetector that can sense the relative change rate of the reflectance of 10(-3).

引用

页码：2533 / 2539

页数：7

共 32 条

[1] Plasmon-free SERS detection of environmental CO2 on TiO2 surfaces [J].

Bontempi, Nicolo ;

Carletti, Luca ;

De Angelis, Costantino ;

Alessandri, Ivano .

NANOSCALE, 2016, 8 (06) :3226-3231

[2] A tiny gas-sensor system based on 1D photonic crystal [J].

Bouzidi, A. ;

Bria, D. ;

Akjouj, A. ;

Pennec, Y. ;

Djafari-Rouhani, B. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2015, 48 (49)

[3]

Chang L, 2014, NAT PHOTONICS, V8, P524, DOI [10.1038/nphoton.2014.133, 10.1038/NPHOTON.2014.133]

[4] PT-Symmetry Breaking and Laser-Absorber Modes in Optical Scattering Systems [J].

Chong, Y. D. ;

Ge, Li ;

Stone, A. Douglas .

PHYSICAL REVIEW LETTERS, 2011, 106 (09)

[5] Design Rules of a Microscale PT-Symmetric Optical Gyroscope Using Group IV Platform [J].

De Carlo, Martino ;

De Leonardis, Francesco ;

Passaro, Vittorio M. N. .

JOURNAL OF LIGHTWAVE TECHNOLOGY, 2018, 36 (16) :3261-3268

[6] Extraordinary reflection and transmission with direction dependent wavelength selectivity based on parity-time-symmetric multilayers [J].

Ding, Shulin ;

Wang, Guo Ping .

JOURNAL OF APPLIED PHYSICS, 2015, 117 (02)

[7] Dynamically encircling an exceptional point for asymmetric mode switching [J].

Doppler, Jorg ;

Mailybaev, Alexei A. ;

Bohm, Julian ;

Kuhl, Ulrich ;

Girschik, Adrian ;

Libisch, Florian ;

Milburn, Thomas J. ;

Rabl, Peter ;

Moiseyev, Nimrod ;

Rotter, Stefan .

NATURE, 2016, 537 (7618) :76-79

[8]

Eleuch H., 2013, EXCEPTIONAL POINTS O

[9] Non-Hermitian photonics based on parity-time symmetry [J].

Feng, Liang ;

El-Ganainy, Ramy ;

Ge, Li .

NATURE PHOTONICS, 2017, 11 (12) :752-762

[10] Single-mode laser by parity-time symmetry breaking [J].

Feng, Liang ;

Wong, Zi Jing ;

Ma, Ren-Min ;

Wang, Yuan ;

Zhang, Xiang .

SCIENCE, 2014, 346 (6212) :972-975

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