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COMSOL Long Period Fiber Grating - ABC Stimulo Photonics [PDF]
Add-layer sensitivity of long-period fiber grating (LPFG) near mode transition (MT) has been studied in reflection configuration to realize a highly sensitive LPFG-based sensor probe
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In this paper, the design of a sub-micron range Waveguide Bragg Grating (WBG) based temperature sensor with high peak reflectivity and thermal sensitivity is proposed.
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Here we suggest a study of the mode Afiber Bragg grating (FBG) is a periodic change of the refractive index across the fiber length which is made by exposure of the core to an intense optical interference
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Download Citation | Femtosecond Laser-Inscribed Cladding Mode Small-Period Long-Period Fiber Gratings for Temperature and Strain Sensing | In this study, we employ a femtosecond
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In this work, for the first time, we demonstrate long period gratings (LPG) in nanostructured optical fibers and their response to gamma radiation. Nanostructured fibers show distinctive features
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This paper presents a review of the evolution of LPFGs, with a specific focus on the progression and current trends of mechanically induced long
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Present work deals with theoretical analysis of dispersion characteristics of long period fiber grating using straight forward coupled mode theory. Simple analytical solutions are obtained for
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general, grating is a periodic change in the refractive index profile along the fibre. Depending on their periods gratings are divided into: fibre Bragg gratings (FBGs) with periods comparable to the
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Long-period fiber gratings (LPFGs) are an important structure in the field of optical fiber sensors, recognized for their ability to couple light between core and cladding modes, enabling
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In this work, a 2D finite element based model constructed in the COMSOL 5.2 Wave Optics Module is coupled with the proposed refractive index model to fully describe the propagation of light through a
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Abstract The article overviews the main properties, fabrication techniques and ares of application of long-period fiber gratings.
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Request PDF | On May 7, 2026, Cailiang Lv and others published Simplified hollow-core photonic crystal long period fiber grating for high-temperature sensing | Find, read and cite all the
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Die Application Gallery bietet COMSOL Multiphysics ® Tutorial- und Demo-App-Dateien, die für die Bereiche Elektromagnetik, Strukturmechanik, Akustik, Strömung, Wärmetransport und Chemie
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Abstract In this paper, the fabrication of arched fiber core based on single-mode fiber is first proposed and experimentally studied about the relevant sensing characteristics. A novel kind of
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Abstract In this paper, we developed and experimentally evaluated a new type of long-period fiber grating. This structure is fabricated by CO2 laser polishing and subsequent heating with
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This chapter presents the general background of optical fiber based sensing systems and then discusses the specific importance of fiber gratings in optical sensor field.
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Specifically, long period gratings (LPG) have been mechanically induced in different optical fibers through a 3D printed nearly sinusoidal grooved structure. LPGs have been mechanically induced in
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How to simulate a long period grating in photonic crystal fiber using Comsol multiphysics software ? I am trying to simulate a PCF LPG.
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The number of periods, grating length, and grating period considered in this work are numerically quantified. The numerically obtained spectral growth of the modeled LPFG seems to be consistent
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We report here for the first time the fabrication and characterisation of long period fiber gratings with periods of several millimetres. The resonant loss peaks of these gratings are generated
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For example, very recently, Morana et al. 5 performed a thorough review about the radiation effects on fiber Bragg gratings (FBG) focused on
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2. Fabrication methods of long-period fibre gratings The inscription of long-period gratings on optical fibre basically consists in the generation of a periodical perturbation of the refractive index in the
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The origin of the TMI is a power transfer from the fundamental mode of the fiber to higher transverse modes via self-induced long period gratings in the fiber due to the thermo-optical effect.
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In this paper, we present a method to fabricate long period gratings in standard telecommunications single mode fibers (SSMF), using a femtosecond laser system.
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The bridge between these two fields has become shorter by the advent of fiber gratings, both short period and long period, which are extensively used for communication as well as sensing
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We simulate transmission through inhomogeneous long-period fiber gratings, -shift and reflective -shift gratings deformed by an acoustic shock front. Coupled mode equations describing interaction of co
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In the last years, mid-infrared radiation emitted by CO2 lasers has become increasing popular as a tool in the development of long-period fiber
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Figure 1 a shows the 3D model of the proposed silicon core-based fiber Bragg grating; the length of Si-FBG was set as 1200 µm, which was long enough for
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