An apodized Fiber Bragg Grating (FBG) sensor is introduced to analyze the importance of side lobe reduction in the reflection spectrum through apodization method for the estimation of measurands.
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
In-fiber Bragg grating filters continue to proliferate, and their applications expand with the rapid advancement of fiber optic component fabrication techniques. Mathematical models for the
The term “fiber Bragg grating” was borrowed from the Bragg law and applied to the periodic structures inscribed inside the core of a conventional Ge- or B-doped
The fiber Bragg grating vibration sensor has received a lot of attention due to its unique performance. However, the natural frequency of the
We present a sensor for measuring the vibrational frequencies on-site by placing the beam so that it makes physical contact with the vibrating body. The sensor has been tested in the range of 50–200 Hz.
Here, we propose a high-temperature two-parameter fiber Bragg grating (FBG) sensor for monitoring temperature and vibration signals simultaneously. Two sets of cascaded gratings are written onto a
Both simulation and experimental tests are included in this paper to illustrate the low-frequency vibration performance of the designed vibration sensor.
This article focuses on one of the most popular measuring techniques (fiber Bragg grating sensors, FBGs) used in this field mainly to measure tissue temperature. Indeed, tissue damage is related to
Fiber Bragg grating based fiber-optic sensors significantly enhance performance, efficiency and safety in several industries. With FBG integrated technology, sensors can provide detailed analysis and
Mentioning: 1 - Fiber Bragg gratings (FBGs) have been widely employed as a sensor for temperature, vibration, strain, etc. measurements. However, extant methods for FBG interrogation still face
Tilted fiber Bragg gratings (TFBGs) are one of the most attractive kind of optical fiber sensor technology due to their intrinsic properties. On the other hand, the acousto-optic effect is an important, fast and
The demand for fiber Bragg grating (FBG) sensors is rising because of their high accuracy, durability, and capacity to perform in harsh environments. Additionally, miniaturization and
In this paper a method to track the rotating force vector set up within the air-gap of radial flux rotating electrical machines using fibre Bragg gratings is reported. The proposed technique offers the
To fully investigate the effect of vibration on FBG data, in this paper, we carry out several experiments by rotating a debriding tool inside the open lumen of the CM developed for osteolysis, while recording
The work is devoted to the consideration of methods for determining the strain of objects using fiber Bragg gratings under a high-frequency vibration or pulsed mechanical action, which is difficult to
1.2 Types of Fiber Bragg Gratings Fiber Bragg Gratings (FBGs) are classified based on their refractive index modulation profile, periodicity, and spectral response. The primary types include uniform,
Abstract: The work is devoted to the consideration of methods for determining the strain of objects using fiber Bragg gratings under a high
In this work, an FRP footbridge is subjected to periodic annual VBM. The dynamic strains of the bridge are monitored with embedded Fiber-optic Bragg Gratings (FBG), a type of FOS that
In many areas of science, Bragg''s law — also known as Wulff –Bragg''s condition or Laue –Bragg interference — is a special case of Laue diffraction that gives the
This study first analyzes the distributed in-situ monitoring method that combines the active heating fiber method of the water field with Bragg grating, and then constructs a loess slope strength monitoring
Currently, the studies on the interface coupling methods of sensor mainly focused on surface attached sensors, such as the optical fiber sensors and the resistance strain sensors, while
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