Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/174234
Title: Electric Field Sensor Based on Photonic Crystal Cavity With Liquid Crystal Infiltration
Authors: Yong Zhao;Ya-nan Zhang;Ri-qing Lv;Jin Li
Year: 2017
Publisher: IEEE
Abstract: A miniaturized and high-sensitive electric field sensor based on liquid crystal (LC) infiltrated photonic crystal (PC) cavity is proposed, by combining the excellent resonant properties of PC cavity with the good demodulation properties of Mach-Zehnder interferometer (MZI). When external electric field is applied, the refractive index of LC will alter due to the electro-optic effect, and thus the corresponding resonant wavelength of PC cavity will also change. The wavelength shift of the transmitted light of PC cavity can be monitored by detecting the output intensity of MZI, and then enables the detection of the external electric field. With using finite difference time domain (FDTD) method, the wavelength sensitivity of the PC cavity is analyzed and optimized, and then the linear relationship between the output intensity of MZI and the external electric field is calculated. Results demonstrate that a quasilinear measurement of electric field can be achieved with high sensitivity of 7 nW per V/m and detection limit of 0.143 V/m.
URI: http://localhost/handle/Hannan/174234
volume: 35
issue: 16
More Information: 3440,
3446
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7484717.pdf551.82 kBAdobe PDF
Title: Electric Field Sensor Based on Photonic Crystal Cavity With Liquid Crystal Infiltration
Authors: Yong Zhao;Ya-nan Zhang;Ri-qing Lv;Jin Li
Year: 2017
Publisher: IEEE
Abstract: A miniaturized and high-sensitive electric field sensor based on liquid crystal (LC) infiltrated photonic crystal (PC) cavity is proposed, by combining the excellent resonant properties of PC cavity with the good demodulation properties of Mach-Zehnder interferometer (MZI). When external electric field is applied, the refractive index of LC will alter due to the electro-optic effect, and thus the corresponding resonant wavelength of PC cavity will also change. The wavelength shift of the transmitted light of PC cavity can be monitored by detecting the output intensity of MZI, and then enables the detection of the external electric field. With using finite difference time domain (FDTD) method, the wavelength sensitivity of the PC cavity is analyzed and optimized, and then the linear relationship between the output intensity of MZI and the external electric field is calculated. Results demonstrate that a quasilinear measurement of electric field can be achieved with high sensitivity of 7 nW per V/m and detection limit of 0.143 V/m.
URI: http://localhost/handle/Hannan/174234
volume: 35
issue: 16
More Information: 3440,
3446
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7484717.pdf551.82 kBAdobe PDF
Title: Electric Field Sensor Based on Photonic Crystal Cavity With Liquid Crystal Infiltration
Authors: Yong Zhao;Ya-nan Zhang;Ri-qing Lv;Jin Li
Year: 2017
Publisher: IEEE
Abstract: A miniaturized and high-sensitive electric field sensor based on liquid crystal (LC) infiltrated photonic crystal (PC) cavity is proposed, by combining the excellent resonant properties of PC cavity with the good demodulation properties of Mach-Zehnder interferometer (MZI). When external electric field is applied, the refractive index of LC will alter due to the electro-optic effect, and thus the corresponding resonant wavelength of PC cavity will also change. The wavelength shift of the transmitted light of PC cavity can be monitored by detecting the output intensity of MZI, and then enables the detection of the external electric field. With using finite difference time domain (FDTD) method, the wavelength sensitivity of the PC cavity is analyzed and optimized, and then the linear relationship between the output intensity of MZI and the external electric field is calculated. Results demonstrate that a quasilinear measurement of electric field can be achieved with high sensitivity of 7 nW per V/m and detection limit of 0.143 V/m.
URI: http://localhost/handle/Hannan/174234
volume: 35
issue: 16
More Information: 3440,
3446
Appears in Collections:2017

Files in This Item:
File SizeFormat 
7484717.pdf551.82 kBAdobe PDF