We present a compact simultaneous strain and high-temperature measurement scheme using dual fiber Bragg gratings (FBGs) written in single mode fiber (SMF) and thin-core fiber (TCF).
This paper presents a new stable dual-wavelength fiber-ring laser based on erbium-doped fiber amplification. The wavelength selection is made by a combination of fiber Bragg gratings
Share this article Article information Abstract A novel dual-layer grating coupler was designed for efficient vertical coupling between a single
Dual-mode tilted fiber Bragg gratings (TFBGs) have become pivotal in optical sensing applications due to their enhanced light coupling from the core fundamental mode to higher-order
This review synthesizes and categorizes a class of novel long-period fiber gratings (LPFGs) engineered through the modification of the external
Abstract We have developed and successfully fabricated a novel dual-core fiber (DCF)-assemble long-period fiber grating (A-LPFG) for vector bending sensing. The A-LPFG is constructed
Abstract: The dual resonant peaks of a long-period fiber grating (LPFG) have been prepared by depositing the polyelectrolyte multilayer films composed of salt-containing poly (diallyldimethyl-
We describe a dual-grating spectral beam combination (SBC) system to combine multiple high-power fiber laser outputs while maintaining near-diffraction-limited beam quality. The two
We proposed two schemes of generating and localizing dynamic gratings in optical fibers: one is based on the gain saturation in erbium-doped fiber; the other is based on Brillouin scattering in
Fiber Bragg gratings (FBGs) have evolved from passive sensing elements into actively programmable photonic components, enabling dynamic wavelength control across diverse applications. This review
Here, by applying the coupled-mode theory, influences of FBG design parameters such as grating length, refractive index modulation depth, and apodization type on the dual-grating demodulation
Gratings work by reflecting specific wavelengths of light while allowing others to pass through. This selective reflection is crucial for applications that demand
LPG (Long Period Grating) and FBG (Fiber Bragg Grating) are types of fiber gratings inscribed in optical fibers, utilizing periodic variations in the refractive index to function effectively in applications such as
Gratings are often used to compensate for material dispersion, such as for non-dispersion-compensated fiber, or to compress a wide bandwidth pulse. Thus, it is important to
Different types of gratings serve unique purposes. For example, Bragg gratings are excellent for reflection filter applications, while long-period gratings show promise
A high-sensitivity bending sensor based on dual-dip long period fiber gratings (LPFGs) in a single-mode fiber is proposed. The length of the gratings is very short only 7.2 mm. The
Abstract and Figures We describe a dual-grating spectral beam combination (SBC) system to combine multiple high-power fiber laser outputs
In this article, two configurations are presented for simultaneous measurement of strain and temperature by reducing the cross-section area in small regions of the fiber where the Bragg
The unique diffractive properties of gratings have made them essential in a wide range of applications, including spectral analysis, precision
We demonstrate the fabrication of a high-quality fiber Bragg grating (FBG) in a large mode area passive double-clad fiber (DCF) using femtosecond laser multi-layer line-by-line inscription. By optimizing the
The temperature sensitivity coefficients of the dual-gratings are consistent due to the gratings are written in the same one fiber. Moreover, the strain sensitivity coefficients can be
A new three-channel beam splitter with dual-structure is described in this paper. Through numerical calculation by finite element method (FEM), with an incident wavelength of 1550 nm, such
An all-fiber dual-parameter sensor based on cascaded long period grating pair fabricated by femtosecond laser and CO2 laser has been proposed and realized both theoretically and
In this paper, we have demonstrated a new and efficacious approach to integrating the fiber Bragg grating (FBG) by employing an Artificial Neural network (ANN) technique for measuring
Optical fiber diffraction gratings with periodic structure across the fiber section and fabricated by femtosecond laser are proposed and demonstrated. The diffraction patterns can be
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