Diaphragm-embedded optical fiber sensors: A review and tutorial

AG Leal-Junior, C Marques - IEEE Sensors Journal, 2020‏ - ieeexplore.ieee.org
In this article, we thoroughly discuss many aspects of diaphragm-embedded optical fiber
sensors covering industrial, robotics and medical applications: from the modeling to field …

A machine learning approach for simultaneous measurement of magnetic field position and intensity with fiber Bragg grating and magnetorheological fluid

AG Leal-Junior, V Campos, C Díaz, RM Andrade… - Optical Fiber …, 2020‏ - Elsevier
This paper presents the simultaneous assessment of magnetic field intensity and position
using a fiber Bragg grating (FBG) array immersed in magnetorheological (MR) fluid. The …

Simultaneous measurement of pressure and temperature with a single FBG embedded in a polymer diaphragm

AG Leal-Junior, CAR Díaz, A Frizera, C Marques… - Optics & Laser …, 2019‏ - Elsevier
This paper presents the development of a single polymer diaphragm-based fiber Bragg
grating (FBG) sensor for simultaneous measurement of pressure and temperature. The FBG …

Liquid level measurement based on FBG-embedded diaphragms with temperature compensation

CAR Díaz, AG Leal-Junior, PSB André… - IEEE Sensors …, 2017‏ - ieeexplore.ieee.org
This paper proposes a fiber optic liquid level sensor system based on a silica fiber Bragg
grating embedded into an epoxy resin diaphragm coupled to a temperature reference …

Optical fibre-based sensors for oil and gas applications

J Johny, S Amos, R Prabhu - Sensors, 2021‏ - mdpi.com
Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas
recovery are causing serious safety concerns across the world. The sensing of critical …

Optical fiber sensing for sub-millimeter liquid-level monitoring: A review

CAR Diaz, A Leal-Junior, C Marques… - IEEE sensors …, 2019‏ - ieeexplore.ieee.org
Fiber optic-based liquid-level sensors (FOLLSs) can work in harsh environments with
inherent advantageous features that only optical fiber offers, such as intrinsic safety …

A polymer optical fiber temperature sensor based on material features

A Leal-Junior, A Frizera-Neto, C Marques, MJ Pontes - Sensors, 2018‏ - mdpi.com
This paper presents a polymer optical fiber (POF)-based temperature sensor. The operation
principle of the sensor is the variation in the POF mechanical properties with the temperature …

FBG-embedded 3-D printed ABS sensing pads: The impact of infill density on sensitivity and dynamic range in force sensors

AG Leal-Junior, C Marques, MRN Ribeiro… - IEEE Sensors …, 2018‏ - ieeexplore.ieee.org
The 3-D printing process is a flexible, automated, customizable, and low-cost fabrication
process. Fiber Bragg grating (FBG) sensors can be embedded into 3-D printed elements to …

Compensation method for temperature cross-sensitivity in transverse force applications with FBG sensors in POFs

AG Leal-Junior, A Theodosiou… - Journal of Lightwave …, 2018‏ - ieeexplore.ieee.org
In this paper, we investigate the influence of temperature on the transverse force response of
polymer optical fiber Bragg gratings (POFBGs) inscribed in cyclic transparent fluoropolymers …