scholarly journals Double Antiresonance Fiber Sensor for the Simultaneous Measurement of Curvature and Temperature

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7778
Author(s):  
Diana Pereira ◽  
Jörg Bierlich ◽  
Jens Kobelke ◽  
Marta S. Ferreira
Keyword(s):  
Optical Properties ◽  
Theoretical Model ◽  
Simultaneous Measurement ◽  
Internal Resonance ◽  
Optical Fiber Sensor ◽  
Single Mode ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber ◽  
Good Agreement

Antiresonant hollow core fibers (ARHCFs) have gained some attention due to their notoriously attractive characteristics on managing optical properties. In this work, an inline optical fiber sensor based on a hollow square core fiber (HSCF) is proposed. The sensor presents double antiresonance (AR), namely an internal AR and an external AR. The sensor was designed in a transmission configuration, where the sensing head was spliced between two single mode fibers (SMFs). A simulation was carried out to predict the behaviors of both resonances, and revealed a good agreement with the experimental observations and the theoretical model. The HSCF sensor presented curvature sensitivities of −0.22 nm/m−1 and −0.90 nm/m−1, in a curvature range of 0 m−1 to 1.87 m−1, and temperature sensitivities of 21.7 pm/°C and 16.6 pm/°C, in a temperature range of 50 °C to 500 °C, regarding the external resonance and internal resonance, respectively. The proposed sensor is promising for the implementation of several applications where simultaneous measurement of curvature and temperature are required.

scholarly journals Application of Negative Curvature Hollow-Core Fiber in an Optical Fiber Sensor Setup for Multiphoton Spectroscopy

Sensors ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 2278 ◽  
Author(s):  
Maciej Andrzej Popenda ◽  
Hanna Izabela Stawska ◽  
Leszek Mateusz Mazur ◽  
Konrad Jakubowski ◽  
Alexey Kosolapov ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Negative Curvature ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Core Fiber

scholarly journals Optical Fiber Sensor for Temperature and Strain Measurement Based on Multimode Interference and Square-Core Fiber

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1239
Author(s):  
Kun Wang ◽  
Xingchen Dong ◽  
Patrick Kienle ◽  
Maximilian Fink ◽  
Wolfgang Kurz ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
High Sensitivity ◽  
Single Mode ◽  
Fiber Sensor ◽  
Multimode Interference ◽  
Strain Sensing ◽  
Maximal Power ◽  
Core Fiber

A variety of specialty fibers such as no-core fiber (NCF) have already been studied to reveal their sensing abilities. In this work, we investigate a specialty fiber, square-core fiber, for temperature and strain sensing. A simple single-mode–multimode–single-mode (SMS) fiber sensor was fabricated, consisting of a 30-cm-long square-core fiber. The experimental results indicate that the maximal wavelength-temperature and wavelength-strain sensitivities are −15.3 pm/∘C and −1.5 pm/με, respectively, while the maximal power-temperature and power-strain sensitivities are 0.0896 dBm/∘C and 0.0756 dBm/με. Analysis of the results suggests that the fiber sensor has the potential to be used as a high-sensitivity temperature sensor with a low strain sensitivity.

Simultaneous Measurement of Strain and Temperature with Hollow Core Fiber Based Intermodal Interferometer

2013 ◽  
Vol 330 ◽  
pp. 231-236
Author(s):  
Fei Qi ◽  
Li Min Hu ◽  
Xin Yong Dong ◽  
Chun Liu Zhao ◽  
Shang Zhong Jin ◽  
...  
Keyword(s):  
Simultaneous Measurement ◽  
Single Mode ◽  
Fabrication Process ◽  
Experimental Results ◽  
Temperature Measurements ◽  
Silica Fiber ◽  
Hollow Core ◽  
Short Segment ◽  
Core Fiber

A hollow core fiber based all-fiber intermodal interferometer is proposed for measurement of strain and temperature. The sensing structure is simply a short segment of hollow core silica fiber being spliced between two normal single mode fibers. The fabrication process only involves a conventional fusion splicer and a mechanical fiber cleaver. Experimental results show that sensitivities of-1.21 pm/με and 21.30 pm/°C are achieved for strain and temperature measurements, respectively.

scholarly journals Liquid level sensor based on dynamic Fabry–Perot interferometers in processed capillary fiber

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Pablo Roldán-Varona ◽  
Rosa Ana Pérez-Herrera ◽  
Luis Rodríguez-Cobo ◽  
Luis Reyes-González ◽  
Manuel López-Amo ◽  
...  
Keyword(s):  
Optical Fiber Sensor ◽  
Liquid Level ◽  
Hollow Core ◽  
Immiscible Liquids ◽  
Fabry Perot ◽  
Detection Mode ◽  
Level Sensor ◽  
Core Fiber ◽  
Liquid Level Sensor ◽  
Silica Capillary

AbstractIn this work, a novel optical fiber sensor capable of measuring both the liquid level and its refractive index is designed, manufactured and demonstrated through simulations and experimentally. For this, a silica capillary hollow-core fiber is used. The fiber, with a sensing length of 1.55 mm, has been processed with a femtosecond laser, so that it incorporates four holes in its structure. In this way, the liquid enters the air core, and it is possible to perform the sensing through the Fabry–Perot cavities that the liquid generates. The detection mode is in reflection. With a resolution of 4 μm (liquid level), it is in the state of the art of this type of sensor. The system is designed so that in the future it will be capable of measuring the level of immiscible liquids, that is, liquids that form stratified layers. It can be useful to determine the presence of impurities in tanks.

Component and setup for insertion of gases in a hollow-core optical fiber sensor

2015 ◽  
Author(s):  
Paula M. P. Gouvêa ◽  
Patrik Rugeland ◽  
Marcos S. P. Gomes ◽  
Walter Margulis
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Hollow Core

Refractive index and temperature sensing characteristics of an optical fiber sensor based on a tapered single mode fiber/polarization maintaining fiber

2016 ◽  
Vol 14 (5) ◽  
pp. 050604-50608
Author(s):  
Zaihang Yang Zaihang Yang ◽  
Hao Sun Hao Sun ◽  
Tingting Gang Tingting Gang ◽  
Nan Liu Nan Liu ◽  
Jiacheng Li Jiacheng Li ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Fiber ◽  
Optical Fiber Sensor ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Temperature Sensing ◽  
Fiber Sensor ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining ◽  
Sensing Characteristics

scholarly journals Low-loss single-mode hollow-core fiber with anisotropic anti-resonant elements

2016 ◽  
Vol 24 (8) ◽  
pp. 8429 ◽  
Author(s):  
Md. Selim Habib ◽  
Ole Bang ◽  
Morten Bache
Keyword(s):  
Single Mode ◽  
Hollow Core ◽  
Low Loss ◽  
Core Fiber

scholarly journals Metal Nanowire Assisted Hollow Core Fiber Sensor for an Efficient Detection of Small Refractive Index Change of Measurand Liquid

Plasmonics ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. 1823-1830 ◽  
Author(s):  
A. K. Pathak ◽  
S. Ghosh ◽  
R. K. Gangwar ◽  
B. M. A. Rahman ◽  
V. K. Singh
Keyword(s):  
Refractive Index ◽  
Refractive Index Change ◽  
Fiber Sensor ◽  
Hollow Core ◽  
Index Change ◽  
Efficient Detection ◽  
Core Fiber ◽  
Metal Nanowire

An Optical Fiber Sensor Based on Lateral-Offset Spliced Seven-Core Fiber for Bending and Stretching Strain Measurement

2020 ◽  
Vol 20 (11) ◽  
pp. 5915-5920
Author(s):  
Rui Zhou ◽  
Xueguang Qiao ◽  
Ruohui Wang ◽  
Fengyi Chen ◽  
Wenwen Ma
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Core Fiber ◽  
Lateral Offset
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