In this work, we investigate the sensing performance of Fiber Bragg Gratings (FBGs) engineered to operate near EPs through precise structural tuning. By aligning the reflection spectrum edges with the EP condition, significant sensitivity enhancement is achiev...
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Based on in situ measurement experiments utilizing Fiber Bragg Grating (FBG) sensors, the evolution of residual strain and temperature variations during the curing process was measured
In this article, a tracking-based high-speed demodulation method for FBG sensing systems based on the wavelength-tunable laser is proposed. The wavelength-tunable laser only
In this paper, our objective is to review the various techniques to measure the temperature and strain using FBGs in different industrial sectors. An In-depth analysis of FBG is also incorporated
This review highlights significant advancements in Fiber Bragg Grating (FBG) sensors, detailing their operational principles, recent technological developments, and diverse applications in
This simple theory complies quite well with low reflective Bragg gratings (<20% peak reflection factor) while the theory of high reflective Bragg gratings (>90% peak reflection factor) is much more difficult
Abstract and Figures A method for inscribing fiber bragg gratings (FBG) using direct, point-by-point writing by an infrared femtosecond laser was
This paper reports the first microstructured solid-core fiber drawn from a 3D-printed preform and the first fiber Bragg gratings inscribed in a fiber of this type.
This paper provides a brief overview of some of the techniques that have been used to support high speed measurements using fiber grating sensors over frequency ranges from 10s of kHz, to MHZ
A multiparameter Brillouin fiber-optic sensor for distributed strain and temperature information measuring based on spontaneous scattering in a
As conventional methods have met difficulties in harsh weather, a 110 kV composite insulator with embedded fiber Bragg gratings (FBGs) was proposed for detecting glaze icing in this paper.
Among optical fiber sensors, fiber Bragg grating (FBG) [2, 3, 4, 5] and interferometer-based optical fiber sensors [6, 7, 8, 9, 10] are the two main categories widely studied by researchers. FBG
We have constructed an experimental setup with a 1:5 downscaled model FBG placed at the rail wheel contact in order to successfully forecast the temperature in the rail wheel contact.
Fiber Bragg Gratings or FBGs have achieved significant attention towards sensing and communication applications due to their outstanding advantages. Due to its high sensitivity towards
EXPERIMENTAL SETUP AND RESULTS In the experiment such a V-shape optical filter could be replaced by a properly designed FBG. Our experimental setup and principle of using FBG as an
In this work, we investigate the sensing performance of Fiber Bragg Gratings (FBGs) engineered to operate near EPs through precise structural tuning. By aligning the reflection spectrum edges with
As we embark on this editorial review, our focus is unwaveringly set on the recent research advancements in FBGs and their applications in optical fiber sensors, offering a panoramic
Another sensing system for measuring the experimental Floating Wind Turbines (FWTs) was constructed, where the fiber Bragg Grating (FBG) sensors were employed. Furthermore, the
Basic fundamentals of FBG and recent progress of fiber Bragg grating-based sensors used in various applications for temperature, pressure, liquid level, strain, and refractive index sensing have been
Aiming at the demand of mine ventilation monitoring system for high precision and anti-harsh environment wind speed sensor, this paper designs a mine optical fiber hot wire wind speed
There is a need to develop a simple, inexpensive, and yet practical method to measure bridge vertical displacements. This paper proposes two methods using either optical fiber (FBG) sensors or a
The ECS of an epoxy‐based molding compound (EMC) is measured by an embedded fiber Bragg grating (FBG) sensor. Under a typical molding condition, a high mold pressure inherently produces
FBG: optical principle Periodic variations of the refraction index in the fiber optic core determine the reflection of the guided light at a specific wavelength l Bragg, said the Bragg wavelength.
Although various tactile sensing systems have been proposed for robotic applications, existing solutions of electromagnetic-based, vision-based, and traditional fiber Bragg gratings (FBG)
The experimental results clearly demonstrate that the creep in the host matrix will significantly influence the long-term measurement accuracy of the FBG sensors since the creep will reduce the strain