Use of the Stokes Parameters of FBG for Transverse Strain Sensing and the Optimization of the Grating Structure
-
Yang Su
,
Chuanxin Wu
Abstract
In this paper, the birefringence effects on fiber Bragg grating (FBG) written into standard single mode fiber under transverse load are analyzed. The evolutions of states of polarization (SOPs) of transmitted light in linear birefringence gratings are studied. We demonstrate that the first normalized Stokes parameter (s1) of the transmitted light in FBG has monotonous relationship with linear birefringence induced by transverse load and can be advantageously used for real-time transverse strain sensor, which is different from the basic sensing theory of the FBG sensors based on direct spectral analysis. The evolution of s1 of FBG in transmission with respect to the transverse load is studied experimentally, and a sensitivity of about 0.089/N is obtained. We also design a special gratings structure to reduce the effect of cross-sensitivity which is typically a limitation of most FBG sensors. The simulations show a great dependence of measurement performances with respect to the shape of transmission spectrum.
©[2014] by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Design of a 4-element Antenna Array for BDS Anti-jamming Applications
- Performance Analysis of Coaxial Fed Stacked Patch Antennas
- Dual-band Circularly Polarized Aperture Coupled Annular-ring Microstrip Antenna for GNSS Applications
- Wideband Gap Coupled Assembly of Rectangular Microstrip Patches for Wi-Max Applications
- Broadband SIW Sequential Feeding Network
- Hybrid SIW-GCPW Cruciform Directional Coupler
- Propagation Characteristics of Rectangular Waveguides at Terahertz Frequencies with Finite-Difference Frequency-Domain Method
- Novel Polarization Splitter Based on Highly Birefringent Dual-core Photonic Crystal Fibers with Hollow Ring Defects
- Optimal Design of Broadband Ultra-flattened Dispersion Photonic Crystal Fiber Using Genetic Algorithm
- Use of the Stokes Parameters of FBG for Transverse Strain Sensing and the Optimization of the Grating Structure
- Determination of Effective Constitutive Properties of Metal Powders at 2.45 GHz for Microwave Processing Applications
- Thermal Impact on the Performance of Highly Efficient Multi-stage Depressed Collector for Space TWT
