Terahertz Refractive Index Sensing Based on Photonic Column Array

Terahertz Refractive Index Sensing Based on Photonic Column Array

Terahertz (THz) silicon photonic column (PC) array has been designed and fabricated, and its resonance effect has been experimentally and numerically investigated. Using this resonance effect, the refractive index sensing for liquids has been demonstrated in this device by the theoretical model calc...

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Veröffentlicht in:IEEE photonics technology letters 2015-03, Vol.27 (5), p.478-481
Hauptverfasser: Fan, Fei, Chen, Sai, Wang, Xiang-Hui, Wu, Peng-Fei, Chang, Sheng-Jiang
Format: Artikel
Sprache:eng
Schlagworte:
Arrays
Liquids
Photonic crystals
Refractive index
Resonant frequency
Sensor
Sensors
Silicon
Subwavelength grating
Terahertz
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container_end_page 481
container_issue 5
container_start_page 478
container_title IEEE photonics technology letters
container_volume 27
creator Fan, Fei
Chen, Sai
Wang, Xiang-Hui
Wu, Peng-Fei
Chang, Sheng-Jiang
description Terahertz (THz) silicon photonic column (PC) array has been designed and fabricated, and its resonance effect has been experimentally and numerically investigated. Using this resonance effect, the refractive index sensing for liquids has been demonstrated in this device by the theoretical model calculation, numerical simulation, and experimental measurement. Moreover, resonance dependence on different incident angles in this device has also been shown. These results confirm that this THz PC array can be used as a THz refractive index sensor with high sensitivity and robustness. This sensing strategy shows that the structured surface of this device is compatible for liquid monitoring and easy to couple and transmit THz waves, and therefore can be more easily implemented in liquid refractive index sensing.
doi_str_mv 10.1109/LPT.2014.2382128
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subjects Arrays
Liquids
Photonic crystals
Refractive index
Resonant frequency
Sensor
Sensors
Silicon
Subwavelength grating
Terahertz
title Terahertz Refractive Index Sensing Based on Photonic Column Array
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