Sensing property analysis on lattice rotating photonic crystal Mach-Zehnder interferometer

Chen Weidong; Yu Na; Chen Ying; Wang Wenyue

doi:10.3788/HPLPB201426.011004

Volume 26 Issue 01

Jan. 2014

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Article Navigation > High Power Laser and Particle Beams > 2014 > 26(01): 011004

Peng Kai, Liu Dagang, Yang Changhong, et al. Improved 3D electromagnetic PIC system parallel algorithm[J]. High Power Laser and Particle Beams, 2013, 25: 732-736. doi: 10.3788/HPLPB20132503.0732

Citation:

Chen Weidong, Yu Na, Chen Ying, et al. Sensing property analysis on lattice rotating photonic crystal Mach-Zehnder interferometer[J]. High Power Laser and Particle Beams, 2014, 26: 011004. doi: 10.3788/HPLPB201426.011004

Peng Kai, Liu Dagang, Yang Changhong, et al. Improved 3D electromagnetic PIC system parallel algorithm[J]. High Power Laser and Particle Beams, 2013, 25: 732-736. doi: 10.3788/HPLPB20132503.0732

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Sensing property analysis on lattice rotating photonic crystal Mach-Zehnder interferometer

doi: 10.3788/HPLPB201426.011004

1.
College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004,China;
2.
The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province,Qinhuangdao 066004,China;
3.
College of Electrical Engineering,Yanshan University,Qinhuangdao 066004,China

Received Date: 2013-03-26
Rev Recd Date: 2013-09-24
Publish Date: 2014-01-15

Abstract

Abstract

We propose a compact photonic crystal Mach-Zehnder interferometer index sensor with a two-dimensional rotated square lattice, based on the photonic crystal self-collimation effect. Using the same background index, the different index of the circular rods has different effective index. The line defected and the air slab waveguide are respectively used as the beam splitter and mirror of the interferometer, and a sensing area is setting on one arm of the interferometer. The index of the circular rods changes with the concentration of the solution filled into the sensing region, thereby affecting the center wavelength of the transmission spectrum, and establishing a mathematical relationship between the solution concentration and the transmission wavelength. Then we carry out a numerical simulation of the concentration measurement of the alcohol solution, the results show that the sensor sensitivity is 250 nm/RIU in the refractive index variation within the scope of 1.33-1.37.
- sensor,
- photonic crystal,
- Mach-Zehnder,
- concentration measurement

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