A fiber strain and vibration sensor based on high birefringence polarization maintaining fibers

2014 ◽  
Vol 322 ◽  
pp. 105-108 ◽  
Author(s):  
Juan Kang ◽  
Xinyong Dong ◽  
Yinghao Zhu ◽  
Shangzhong Jin ◽  
Songlin Zhuang
Keyword(s):  
Vibration Sensor ◽  
High Birefringence ◽  
Polarization Maintaining

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.

Optical vibration sensor based on Michelson interferometer arrangement with polarization-maintaining fibers

2014 ◽  
Author(s):  
Jakub Cubik ◽  
Stanislav Kepak ◽  
Andrej Liner ◽  
Martin Papes ◽  
Tomas Kajnar ◽  
...  
Keyword(s):  
Michelson Interferometer ◽  
Vibration Sensor ◽  
Polarization Maintaining ◽  
Optical Vibration

scholarly journals A High-Birefringence Microfiber Sagnac-Interferometer Biosensor Based on the Vernier Effect

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4114 ◽  
Author(s):  
Xue-Zhou Wang ◽  
Qi Wang
Keyword(s):  
Refractive Index ◽  
Sagnac Interferometer ◽  
Refractive Index Sensitivity ◽  
Electrostatic Adsorption ◽  
High Birefringence ◽  
Polarization Maintaining Fiber ◽  
Good Biocompatibility ◽  
Polarization Maintaining ◽  
Index Sensitivity ◽  
Index Unit

We propose a high-sensitive Sagnac-interferometer biosensor based on theVernier effect (VE) with a high-birefringence microfiber. The sensitivity enhancement is achieved by utilizing two cascaded Sagnac interferometers. One of the two interference loops consists of a panda polarization-maintaining fiber as a filter, whilst the other is comprised of high-birefringent microfiber coated Graphene oxide (GO) as a sensing channel. We theoretically analyzed the sensitivity of the sensor and verified it with experiments. The results of the simulation show that the refractive index sensitivity is more than five times that of the fiber sensor based on a single Sagnac loop. The sensitivity of the refractive index in the experiments can reach 2429 nm/refractive index unit (RIU), which is basically in accordance with the simulation. We also use electrostatic adsorption to coat GO on the surface of the sensing channel. GO is employed to adsorb bovine serum albumin (BSA) molecules to achieve the desired detection results, which has good biocompatibility and large specific surface area. The sensitivity to detect BSA can reach 9.097 nm/(mg×mL−1).

Fabrication and Characteristics of Elliptical-Holes and near Elliptical Core Hexangular Lattice Photonic Crystal Fibers Based on Polymer

2011 ◽  
Vol 279 ◽  
pp. 151-156 ◽  
Author(s):  
Fei Liu ◽  
Hong Yan Gao ◽  
Qiang Xu ◽  
Ya Ni Zhang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Structural Parameters ◽  
Polarization Mode Dispersion ◽  
High Birefringence ◽  
Triangle Lattice ◽  
Elliptical Holes ◽  
Elliptical Core ◽  
Polarization Maintaining ◽  
Crystal Fibers

The polarization properties of a new structure of high birefringence polarization maintaining photonic crystal fibers were explored, which were consisted of elliptical-holes and near elliptical core triangle lattice of hexangular structure based on polymer. The optical birefringence and the first order polarization mode dispersion were studied based on a full-vector localized basis function method. The numerical results show that the polarization properties are strongly dependent on structural parameters of the PCF. Furthermore, the proposed fiber was fabricated based on MMA monomer polymerization method in situ. So the proposed PCFs may be useful in the field of high birefringence polarization-maintaining optical communication.

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