Temperature-Insensitive Strain Sensing with a Polarization-Maintaining Photonic Crystal Fiber Based on Brillouin Dynamic Grating

2016 ◽  
Author(s):  
Hongying Zhang ◽  
Yongkang Dong ◽  
Yafeng Bi ◽  
Xiaobo Hu ◽  
Guiyuan Cao
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Strain Sensing ◽  
Crystal Fiber ◽  
Polarization Maintaining ◽  
Dynamic Grating

scholarly journals A Highly Birefringent Photonic Crystal Fiber for Terahertz Spectroscopic Chemical Sensing

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1799
Author(s):  
Tianyu Yang ◽  
Liang Zhang ◽  
Yunjie Shi ◽  
Shidi Liu ◽  
Yuming Dong
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Numerical Aperture ◽  
Wide Band ◽  
Relative Sensitivity ◽  
Chemical Sensitivity ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining

A photonic crystal fiber (PCF) with high relative sensitivity was designed and investigated for the detection of chemical analytes in the terahertz (THz) regime. To ease the complexity, an extremely simple cladding employing four struts is adopted, which forms a rectangular shaped core area for filling with analytes. Results of enormous simulations indicate that a minimum 87.8% relative chemical sensitivity with low confinement and effective material absorption losses can be obtained for any kind of analyte, e.g., HCN (1.26), water (1.33), ethanol (1.35), KCN (1.41), or cocaine (1.50), whose refractive index falls in the range of 1.2 to 1.5. Besides, the PCF can also achieve high birefringence (∼0.01), low and flat dispersion, a large effective modal area, and a large numerical aperture within the investigated frequency range from 0.5 to 1.5 THz. We believe that the proposed PCF can be applied to chemical sensing of liquid and THz systems requiring wide-band polarization-maintaining transmission and low attenuation.

Brillouin Dynamic Grating Sensor Based on Novel Photonic Crystal Fiber

2021 ◽  
Vol 41 (7) ◽  
pp. 0706001
Author(s):  
赵丽娟 Zhao Lijuan ◽  
梁若愚 Liang Ruoyu ◽  
徐志钮 Xu Zhiniu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Crystal Fiber ◽  
Dynamic Grating
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