scholarly journals Simultaneous measurement of magnetic field and temperature based on two anti-resonant modes in hollow core Bragg fiber

2021 ◽  
Author(s):  
Yi Huang ◽  
Hong Qiu ◽  
Deng Chuanlu ◽  
Zhenggang Lian ◽  
Yong Yang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Simultaneous Measurement ◽  
Hollow Core ◽  
Bragg Fiber ◽  
Resonant Modes

Simultaneous measurement of temperature and strain based on a hollow core Bragg fiber

2020 ◽  
Vol 45 (22) ◽  
pp. 6122
Author(s):  
Yu Wang ◽  
Yan Zhou ◽  
Xinyu Wang ◽  
Daru Chen ◽  
Zhenggang Lian ◽  
...  
Keyword(s):  
Simultaneous Measurement ◽  
Hollow Core ◽  
Bragg Fiber

scholarly journals Hollow Core Bragg Fiber-Based Sensor for Simultaneous Measurement of Curvature and Temperature

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7956
Author(s):  
Zongru Yang ◽  
Weihao Yuan ◽  
Changyuan Yu
Keyword(s):  
Transmission Spectrum ◽  
Simultaneous Measurement ◽  
Single Mode ◽  
Temperature Sensing ◽  
Wavelength Shift ◽  
Hollow Core ◽  
Bragg Structure ◽  
Bragg Fiber ◽  
External Perturbations ◽  
Two Parameters

In this paper, the hollow core Bragg fiber (HCBF)-based sensor based on anti-resonant reflecting optical waveguide (ARROW) model is proposed and experimentally demonstrated for simultaneous measurement of curvature and temperature by simply sandwiching a segment of HCBF within two single-mode fibers (SMFs). The special construction of a four-bilayer Bragg structure provides a well-defined periodic interference envelope in the transmission spectrum for sensing external perturbations. Owing to different sensitivities of interference dips, the proposed HCBF-based sensor is capable of dual-parameter detection by monitoring the wavelength shift. The highest curvature sensitivity of the proposed sensor is measured to be 74.4 pm/m−1 in the range of 1.1859–2.9047 m−1 with the adjusted R square value of 0.9804. In the meanwhile, the best sensitivity of temperature sensing was detected to be 16.8 pm/°C with the linearity of 0.997 with temperature range varying from 25 to 55 °C. Furthermore, with the aid of the 2 × 2 matrix, the dual demodulation of curvature and temperature can be carried out to realize the simultaneous measurement of these two parameters. Besides dual-parameter sensing based on wavelength shift, the proposed sensor can also measure temperature-insensitive curvature by demodulating the intensity of resonant dips.

High-sensitivity fiber optic magnetic field sensor based on lossy mode resonance and hollow core-offset structure

2021 ◽  
pp. 1-12
Author(s):  
Xue-Peng Jin ◽  
Hong-Zhi Sun ◽  
Shuo-Wei Jin ◽  
Wan-Ming Zhao ◽  
Jing-Ren Tang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fiber Optic ◽  
High Sensitivity ◽  
Magnetic Field Sensor ◽  
Hollow Core ◽  
Field Sensor

Hollow core silicon-silica Bragg fiber

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Subhasis Chaudhuri ◽  
Justin R. Sparks ◽  
Rongrui He ◽  
John V. Badding
Keyword(s):  
Hollow Core ◽  
Bragg Fiber

Intracortical Spread of Epileptic Spikes — Simultaneous Measurement of Magnetic Field and Electric Potential in Rabbits

Biomag 96 ◽  
2000 ◽  
pp. 1098-1101
Author(s):  
M. Eiselt ◽  
U. Zwiener ◽  
F. Gießler ◽  
H. Wagner ◽  
J. Haueisen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Potential ◽  
Simultaneous Measurement ◽  
Epileptic Spikes

scholarly journals Active angular tuning and switching of Brewster quasi bound states in the continuum in magneto-optic metasurfaces

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Diego R. Abujetas ◽  
Nuno de Sousa ◽  
Antonio García-Martín ◽  
José M. Llorens ◽  
José A. Sánchez-Gil
Keyword(s):  
Magnetic Field ◽  
Magnetic Dipole ◽  
Bound States ◽  
Electromagnetic Spectrum ◽  
Resonant Modes ◽  
Out Of Plane ◽  
Q Factors ◽  
The Impact ◽  
The Continuum ◽  
Magneto Optic

Abstract Bound states in the continuum (BICs) emerge throughout physics as leaky/resonant modes that remain, however, highly localized. They have attracted much attention in photonics, and especially in metasurfaces. One of their most outstanding features is their divergent Q-factors, indeed arbitrarily large upon approaching the BIC condition (quasi-BICs). Here, we investigate how to tune quasi-BICs in magneto-optic (MO) all-dielectric metasurfaces. The impact of the applied magnetic field in the BIC parameter space is revealed for a metasurface consisting of lossless semiconductor spheres with MO response. Through our coupled electric/magnetic dipole formulation, the MO activity is found to manifest itself through the interference of the out-of-plane electric/magnetic dipole resonances with the (MO-induced) in-plane magnetic/electric dipole, leading to a rich, magnetically tuned quasi-BIC phenomenology, resembling the behavior of Brewster quasi-BICs for tilted vertical-dipole resonant metasurfaces. Such resemblance underlies our proposed design for a fast MO switch of a Brewster quasi-BIC by simply reversing the driving magnetic field. This MO-active BIC behavior is further confirmed in the optical regime for a realistic Bi:YIG nanodisk metasurface through numerical calculations. Our results present various mechanisms to magneto-optically manipulate BICs and quasi-BICs, which could be exploited throughout the electromagnetic spectrum with applications in lasing, filtering, and sensing.

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