scholarly journals Temperature Sensor Based on Side-Polished Fiber SPR Device Coated with Polymer

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4063 ◽  
Author(s):  
Shuhui Liu ◽  
Shaoqing Cao ◽  
Zhe Zhang ◽  
Ying Wang ◽  
Changrui Liao ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Gold Film ◽  
Single Mode ◽  
Cost Effective ◽  
Single Mode Fiber ◽  
Uv Curable ◽  
Spr Sensor ◽  
Highly Sensitive ◽  
Sensor Structure ◽  
Side Polished Fiber

A highly sensitive temperature sensor based on surface plasmon resonance (SPR) of a side-polished single mode fiber is demonstrated. The sensor consists of a gold film coated side-polished fiber covered by a layer of UV-curable adhesive. Before introducing the UV-curable adhesive, the gold-coated fiber exhibits refractive index (RI) sensitivity of 1691.6 nm/RIU to 8800 nm/RIU in the range of 1.32 to 1.43. The resonant wavelength of the SPR sensor shifts to 650 nm when the adhesive is coated on the gold film, and is fixed at about 725 nm when the adhesive is cured. Due to the high thermo-optic and thermal expansion coefficient of the adhesive, the sensor structure achieves a temperature sensitivity of −0.978 nm/°C between 25 °C and 100 °C. The proposed optical fiber SPR sensor is simple, highly sensitive and cost effective, which may find potential applications for temperature measurements in the biomedical and environmental industries.

scholarly journals A Fiber Ring Laser Sensor with a Side Polished Evanescent Enhanced Fiber for Highly Sensitive Temperature Measurement

Micromachines ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 586
Author(s):  
Weihao Lin ◽  
Yibin Liu ◽  
Liyang Shao ◽  
Mang I. Vai
Keyword(s):  
Temperature Sensor ◽  
Ring Laser ◽  
High Sensitivity ◽  
Laser Cavity ◽  
Single Mode ◽  
Laser Sensor ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Highly Sensitive ◽  
Side Polished Fiber

We demonstrate a highly sensitive and practical fiber-based temperature sensor system. The sensor is constructed based on a fiber ring laser (FRL) as well as a side-polished fiber filled with isopropanol. The laser cavity of the sensing part fiber is polished by the wheel fiber polishing system with residual thickness (RT) is selected to detect the temperature in the FRL. Thanks to the high thermo-optic coefficient of isopropanol, the sensitivity of the proposed temperature sensor could be effectively improved by filling isopropanol in the cost-less side polished single mode fiber. Refractive index (RI) of isopropanol changes with the surrounding temperature variation allowing high-sensitivity temperature sensing. Experimental results demonstrate that the side polished fiber can efficiently excite high-order cladding modes which enhance the modular interference increase the interaction between the evanescent wave and the isopropanol. Besides, the results show that the sensitivity can be as high as 2 nm/°C in the temperature range of 25 °C–35°C.

scholarly journals Compact omnidirectional multicore fiber-based vector bending sensor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Josu Amorebieta ◽  
Angel Ortega-Gomez ◽  
Gaizka Durana ◽  
Rubén Fernández ◽  
Enrique Antonio-Lopez ◽  
...  
Keyword(s):  
Single Mode ◽  
High Accuracy ◽  
Single Mode Fiber ◽  
Wavelength Shift ◽  
Short Segment ◽  
Light Power ◽  
Highly Sensitive ◽  
Bending Sensor ◽  
Asymmetric Multicore ◽  
Multicore Fiber

AbstractWe propose and demonstrate a compact and simple vector bending sensor capable of distinguishing any direction and amplitude with high accuracy. The sensor consists of a short segment of asymmetric multicore fiber (MCF) fusion spliced to a standard single mode fiber. The reflection spectrum of such a structure shifts and shrinks in specific manners depending on the direction in which the MCF is bent. By monitoring simultaneously wavelength shift and light power variations, the amplitude and bend direction of the MCF can be unmistakably measured in any orientation, from 0° to 360°. The bending sensor proposed here is highly sensitive even for small bending angles (below 1°).

scholarly journals Fabrication and Qualitative Analysis of an Optical Fibre EFPI-Based Temperature Sensor

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4445
Author(s):  
Fintan McGuinness ◽  
Aidan Cloonan ◽  
Mohamed Oubaha ◽  
Dinesh Babu Duraibabu ◽  
M. Mahmood Ali ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Single Mode ◽  
Outer Diameter ◽  
The Novel ◽  
Single Mode Fibre ◽  
Manufacturing Technique ◽  
Sensor Structure ◽  
Sensitive Sensor ◽  
Quartz Capillary ◽  
Mode Fibre

The following presents a comparison of an extrinsic Fabry–Perot interferometer (EFPI)-based temperature sensor, constructed using a novel diaphragm manufacturing technique, with a reference all-glass EFPI temperature sensor. The novel diaphragm was manufactured using polyvinyl alcohol (PVA). The novel sensor fabrication involved fusing a single-mode fibre (SMF) to a length of fused quartz capillary, which has an inner diameter of 132 μm and a 220 μm outer diameter. The capillary was subsequently polished until the distal face of the capillary extended approximately 60 μm beyond that of the single mode fibre. Upon completion of polishing, the assembly is immersed in a solution of PVA. Controlled extraction resulted in creation of a thin diaphragm while simultaneously applying a protective coating to the fusion point of the SMF and capillary. The EFPI sensor is subsequently sealed in a second fluid-filled capillary, thereby creating a novel temperature sensor structure. Both temperature sensors were placed in a thermogravimetric analyser and heated from an indicated 30 °C to 100 °C to qualitatively compare sensitivities. Initial results indicated that the novel manufacturing technique both expedited production and produces a more sensitive sensor when compared to an all-glass construction.

scholarly journals Highly Sensitive Temperature and Humidity Sensor Based on Carbon Nanotube-Assisted Mismatched Single-Mode Fiber Structure

Micromachines ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 521 ◽  
Author(s):  
Yuan ◽  
Qian ◽  
Liu ◽  
Wang ◽  
Yu
Keyword(s):  
Carbon Nanotube ◽  
Humidity Sensor ◽  
Single Mode ◽  
Small Region ◽  
Single Mode Fiber ◽  
Fiber Structure ◽  
Humidity Sensing ◽  
Highly Sensitive ◽  
Temperature And Humidity ◽  
Stable Performance

Here we report on a miniaturized optical interferometer in one fiber based on two mismatched nodes. The all-fiber structure shows stable performance of temperature and humidity sensing. For temperature sensing in large ranges, from 40 to 100 °C, the sensor has a sensitivity of 0.24 dB/°C, and the adjusted R-squared value of fitting result reaches 0.99461 which shows a reliable sensing result. With carbon nanotubes coating the surface of the fiber, the temperature sensitivity is enhanced from 0.24561 to 1.65282 dB/°C in a small region, and the performance of humidity sensing becomes more linear and applicable. The adjusted R-squared value of the linear fitting line for humidity sensing shows a dramatic increase from 0.71731 to 0.92278 after carbon nanotube coating, and the humidity sensitivity presents 0.02571 nm/%RH.

A temperature sensor based on the splicing of a core offset multi-mode fiber with two single mode fiber

2015 ◽  
Vol 11 (6) ◽  
pp. 434-437 ◽  
Author(s):  
Xing-hu Fu ◽  
Qin Liu ◽  
Yan-li Xiu ◽  
Hai-yang Xie ◽  
Chuan-qing Yang ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Multi Mode

A 75-km single-mode fiber transmission experiment at 565 Mbit/s using cost-effective constituents

1984 ◽  
Vol 2 (4) ◽  
pp. 406-414 ◽  
Author(s):  
J. Bernard ◽  
L. Jeunhomme ◽  
M. Jurczyszyn ◽  
G. Lavanant ◽  
S. Landais ◽  
...  
Keyword(s):  
Single Mode ◽  
Cost Effective ◽  
Single Mode Fiber ◽  
Transmission Experiment ◽  
Fiber Transmission

High-temperature sensor based on an abrupt-taper Michelson interferometer in single-mode fiber

2013 ◽  
Vol 52 (10) ◽  
pp. 2038 ◽  
Author(s):  
Le Xu ◽  
Lan Jiang ◽  
Sumei Wang ◽  
Benye Li ◽  
Yongfeng Lu
Keyword(s):  
High Temperature ◽  
Temperature Sensor ◽  
Michelson Interferometer ◽  
Single Mode ◽  
Single Mode Fiber ◽  
High Temperature Sensor
Sign in / Sign up

Export Citation Format

Share Document