scholarly journals Intensity-modulated bend sensor by using a twin core fiber: theoretical and experimental studies

2020 ◽  
Vol 28 (10) ◽  
pp. 14850 ◽  
Author(s):  
Guolu Yin ◽  
Fengchan Zhang ◽  
Baijie Xu ◽  
Jun He ◽  
Yiping Wang
Keyword(s):  
Experimental Studies ◽  
Intensity Modulated ◽  
Core Fiber ◽  
Bend Sensor

An intensity modulated fiber-optic carbon monoxide sensor based on Ag/Co-MOF in-situ coated thin-core fiber

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Lian Wang ◽  
Juncheng Zhou ◽  
Yuhao Chen ◽  
Liu Xiao ◽  
Guojia Huang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Carbon Monoxide ◽  
Photoelectron Spectroscopy ◽  
Fiber Optic ◽  
Temperature Stability ◽  
Single Mode ◽  
X Ray ◽  
Intensity Modulated ◽  
Core Fiber

Abstract An intensity modulated fiber-optic carbon monoxide (CO) sensor by integrating in-situ solvothermal-growth Ag/Co-MOF sensing film is fabricated and evaluated. The Michelson interference sensing structure is composed of single-mode fiber (SMF), enlarged taper, thin-core fiber (TCF), and Ag film as the reflector. Ag/Co-MOF was coated on the cladding of the TCF as the sensing material, and the enlarged taper is located between TCF and SMF as the coupler. The structure, morphology, compositions and thermal stability of the Ag/Co-MOF sensing film were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), etc. The sensitivity of the sensor is 0.04515 dB/ppm, and the fitting parameter of the CO concentration is 0.99876. In addition, the sensor has the advantages of good selectivity, good signal and temperature stability, and it has potential application in trace CO detection.

Intensity-modulated refractive index sensor with anti-light source fluctuation based on no-core fiber filter

2017 ◽  
Vol 97 ◽  
pp. 358-363 ◽  
Author(s):  
Cheng Zhang ◽  
Shan Xu ◽  
Junfa Zhao ◽  
Hongqiang Li ◽  
Hua Bai ◽  
...  
Keyword(s):  
Refractive Index ◽  
Light Source ◽  
Refractive Index Sensor ◽  
Intensity Modulated ◽  
Core Fiber ◽  
Source Fluctuation ◽  
Fiber Filter

scholarly journals Sensitivity tailoring of an all-fiber bend sensor based on a dual-core fiber unbalanced Michelson interferometer

2021 ◽  
Author(s):  
Dawid Budnicki ◽  
ITXASO Parola ◽  
Lukasz Szostkiewicz ◽  
Krzysztof Markiewicz ◽  
Krzysztof Wilczynski ◽  
...  
Keyword(s):  
Michelson Interferometer ◽  
Core Fiber ◽  
Dual Core ◽  
Bend Sensor

Crosstalk-Induced System Outage in Intensity-Modulated Direct-Detection Multi-Core Fiber Transmission

2020 ◽  
Vol 38 (2) ◽  
pp. 291-296 ◽  
Author(s):  
Georg Rademacher ◽  
Ruben S. Luis ◽  
Benjamin J. Puttnam ◽  
Yoshinari Awaji ◽  
Naoya Wada
Keyword(s):  
Direct Detection ◽  
Intensity Modulated ◽  
Core Fiber ◽  
Fiber Transmission

scholarly journals Fiber Vector Bend Sensor Based on Multimode Interference and Image Tapping

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 321
Author(s):  
Ziyang Zhang ◽  
Aashia Rahman ◽  
Julia Fiebrandt ◽  
Yu Wang ◽  
Kai Sun ◽  
...  
Keyword(s):  
Single Mode ◽  
Single Mode Fiber ◽  
Bend Angle ◽  
Multimode Interference ◽  
Multimode Fiber ◽  
Bend Radius ◽  
Light Intensity Distribution ◽  
Imaging Processing ◽  
Core Fiber ◽  
Bend Sensor

A grating-less fiber vector bend sensor is demonstrated using a standard single mode fiber spliced to a multimode fiber as a multimode interference device. The ring-shaped light intensity distribution at the end of the multimode fiber is subject to a vector transition in response to the fiber bend. Instead of comprehensive imaging processing for the analysis, the image can be tapped out by a seven-core fiber spliced to the other end of the multimode fiber. The seven-core fiber is further guided to seven single mode fibers via a commercial fan-out device. By comparing the relative light intensities received at the seven outputs, both the bend radius and its direction can be determined. Experiment has shown that a slight bend displacement of 10 µm over a 1.2-cm-long multimode fiber in the X direction (bend angle of 0.382°) causes a distinctive power imbalance of 4.6 dB between two chosen outputs (numbered C4 and C7). For the same displacement in the Y direction, the power ratio between the previous two outputs C4 and C7 remains constant, while the imbalance between another pair (C3 and C4) rises significantly to 7.0 dB.

scholarly journals All-Fiber Highly Sensitive Bragg Grating Bend Sensor

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4228 ◽  
Author(s):  
Oleg V. Butov ◽  
Alexey P. Bazakutsa ◽  
Yuri K. Chamorovskiy ◽  
Artem N. Fedorov ◽  
Igor’ A. Shevtsov
Keyword(s):  
High Resolution ◽  
Welded Joints ◽  
Harsh Environments ◽  
Bragg Grating ◽  
Sensor Design ◽  
Highly Sensitive ◽  
Core Fiber ◽  
Bend Sensor

In this paper, we demonstrated a novel, all-fiber highly sensitive bend sensor based on a four-core fiber rod with a diameter of 2.1 mm. We observed a high resolution of the sensor at a level of 3.6 × 10−3 m−1. Such a sensor design can be used in harsh environments due to the relatively small size and all-fiber configuration, containing no adhesive, nor welded joints.

scholarly journals Intensity Modulated Gas RI Sensor Based on Inornate Antiresonant Hollow-Core Fiber With Ultrahigh Sensitivity

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 45270-45276
Author(s):  
Maoxiang Hou ◽  
Neng Wang ◽  
Jianguo Ma ◽  
Yun Chen ◽  
Xin Chen
Keyword(s):  
Hollow Core ◽  
Intensity Modulated ◽  
Ultrahigh Sensitivity ◽  
Core Fiber
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