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Abstract Strain is an important parameter in structural testing. How to accurately obtain the strain of low modulus (or flexible) and rigid structures is a hot issue in structural testing. This paper
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Despite the improvements in optical fiber manufacturing and advancements in the field in general, basic optical components such as mirrors, wavelength filters, and partial reflectors have been a challenge
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Fiber grating sensors quantify stress-strain in a manner analogous to temperature measurement, as the Bragg wavelengths reflected within the fiber experience a shift upon compression.
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The research work reported in this paper is related to a Structural Health Monitoring (SHM) Project on a bridge in Ontario, Canada. It was recommended to use Fiber Bragg Grating
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/ / / / | Investigation of structural properties of carbon-epoxy composites using fiber-Bragg gratings / / / / / | InAs photodetectors for high-speed detection of infrared radiation / / | Distributed fiber optic system
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Simulation results indicated that optimizing pump power distribution, the length of the ytterbium-doped fiber and the wavelength combination can significantly improve the output characteristics.
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GFFs based on fiber gratings include chirped Bragg gratings, slanted Bragg gratings, and long-period gratings. GFFs have a significant impact on the level of gain ripple amplifier manufacturers can
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This study reports early-stage development of metal-coated fiber Bragg grating (FBG) sensors for embedding in adaptive structures. FBGs offer a small size, spectral sensitivity, and operation from
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Fiber Optics and Optical Communications - Photon statistics of amplified spontaneous emission in a dense wavelength-division multiplexing regime Fiber Optics and Optical Communications - Effect of
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The development of optical fibers has revolutionized not only telecommunications but also the way monitoring and sensing is conducted,
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The experimental setup employed polarization-maintaining ytterbium-doped fibers and a combination of different fiber Bragg gratings to achieve high mode purity and stable output.
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Many (aircraft) structures have multiple load paths where after a (partial) failure of a load path the remaining structure can carry the limit load without catastrophic failure or too severe impact on the
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To overcome the limitations of conventional measurement methods, research on directly measuring fluid temperature inside channels using Fiber Bragg Grating (FBG) sensors is gaining
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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
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Carbon fiber-reinforced polymer (CFRP) materials are susceptible to latent structural damages such as delamination and matrix cracking, which can compromise their integrity and
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A fiber Bragg grating is a structure within the core of an optical fiber with a periodic variation of the refractive index. It acts as a wavelength-selective mirror, reflecting light in a narrow range of
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Optical fiber Bragg gratings emerged from telecommunications research in the 1970s and have matured into versatile components for wavelength-selective operations. These structures consist of periodic
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Fiber Bragg Grating (FBG) is defined as a type of optical fiber sensor that operates as a Bragg reflector, allowing for the measurement of strain and temperature by tracking changes in its wavelength peak,
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Field proven Fiber Bragg Gratings (FBGs) as measurement elements for sensing applications FBGs are a few millimeters long reflective microstructures that are inscribed within the core of a single-mode
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This paper presents a novel super absorbent polymer (SAP)-coated ultra-weak fiber Bragg grating (UWFBG) strain sensing cable for enhanced water leakage detection and localization in
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An Optical Fiber Bragg Grating (FBG) is a periodic modulation of the refractive index within the core of an optical fiber. This structure acts as a wavelength-selective reflector, transmitting most
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A Fiber Bragg Grating is a type of optical fiber that has a periodic structure inscribed in its core. This periodic structure causes the fiber to reflect specific wavelengths of light, while
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Type I Bragg grating. Furthermore, due to the photosensitivity type of the Bragg grating, the grating itself has a character-istic behaviour with respect o temperature erasure. Type I gratings can be erased at
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Fiber bragg grating has the characteristics of small additional loss, small size, good coupling with optical fiber, and integration with other optical fiber devices, making
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The purpose of this paper is to simulate and analyze the spectral characteristics of the fiber Bragg grating (FBG) to obtain narrow bandwidth and minimization side
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High spatial resolution fiber-optic distributed lateral-stress sensing by stepwise frequency modulation of a super structure grating distributed Bragg reflector laser diode (English)
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We report an Er-doped fiber laser for highresolution temperature sensing over a wide temperature range. The laser was constructed in a ring-cavity structure and was able to operate
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