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...
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A robust, ultra-broadband high-speed wavelength-swept DFB laser array with 60 nm range and 82.7 kHz speed enables high-precision FBG sensor interrogation, stable even in challenging environments,
A traditional method for fabricating LPFGs involves exposing the optical fiber covered with an amplitude mask to an ultra-violet laser beam [17, 18]. The fiber is hydrogen loaded to
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
Here we describe the inscription of high-order Bragg gratings. These optical components feature the combined properties of Bragg gratings and Fabry-Perot cavities, open new possibilities both for
In this study, we propose a fiber optic positioning system that integrates an incoherent light source, grating arrays, and coding techniques, representing an advancement in the field of
A high sensitivity interrogation system of fiber Bragg grating (FBG) sensor with composite cavity fiber laser is proposed and experimentally demonstrated. The FBG is used as a sensing
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 paper presents a novel multi-pass point-by-point method for high-precision inscription of fiber Bragg gratings with a femtosecond laser radiation. The dynamics of the gratings formation is
This paper presents an innovative and efficient shape-sensing approach for optical fiber Bragg grating (FBG) arrays, employing the dual-comb spectroscopy (DCS) technique for
In addition, radiation-resistant optical fibers with core consisting of pure silica glass generally do not feature sufficient photosensitivity for grating inscription even after hydrogen loading.
Understanding these gratings begins with a solid grasp of optical fiber properties and the functionality of the gratings themselves. This article offers a detailed
Abstract A novel technique to achieve real-time and high-precision interrogation of a linearly chirped fiber Bragg (LCFBG) grating sensor array based on dispersive time delay and optical pulse
In this paper, a high-resolution and measurement range expanded fiber Bragg grating (FBG) sensing system based on a microwave photonic filter (MPF) with period-breaking interrogation method is
Fiber Bragg gratings have attracted extensive attention and research in the field of fiber optic sensors due to their low cost, ease of processing and improvement, and excellent sensing
Precision optical filters are key components for current and future photonic technologies. Here, we demonstrate a low loss spectral filter consisting of an ultrasteep bandpass feature with a maximum
This paper introduces the application of fiber grating wavelength demodulation technology in communication, and reviews the high-precision fiber grating wavelength demodulation methods in
Ultra-precision displacement measurement has emerged as a foundational element in numerous high-end engineering applications, where sub-nanometer accuracy is essential for