The role of germanium-doped fiber gratings

Long-period fiber gratings (LPGs) are applied in order to couple light between core and co-propagating cladding modes in single-mode optical fibers. For these applications, fibers with a high numerica...

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Dec 08, 2025

Long-Period Gratings in Highly Germanium-Doped, Single-Mode

Long-period fiber gratings (LPGs) are applied in order to couple light between core and co-propagating cladding modes in single

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Oct 21, 2025

The photosensitivity and its microstructural origin of Ge-doped silica

Ultraviolet (UV) light-induced refractive index changes in optical fibers involve factors such as defect changes and

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Jul 05, 2026

(PDF) Chemical Composition Gratings in Germanium doped and

We have successfully created Chemical Composition Gratings (CCGs) into two different types of fiber: standard

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Sep 03, 2025

Radiation tolerant fiber Bragg gratings: review of FBG sensing

By synthesizing insights from various doping strategies (e.g., nitrogen- and fluorine-doped fibers) and irradiation

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Jan 13, 2026

Nonlinear optical characteristics of germanium and its application for

Recently, germanium (Ge) was also considered as the two-dimensional (2D) material saturable absorber (SA) because

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Aug 21, 2025

Radiation tolerant fiber Bragg gratings: review of FBG sensing

Germanium-doped fibers exhibit higher radiation sensitivity, whereas nitrogen- and fluorine-doped alternatives

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Jul 19, 2026

Fiber Bragg gratings in the radiation environment: Change under the

The change of the transmission spectra of fiber Bragg gratings written in the optical fibers, whose silica cores are

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May 29, 2026

Photosensitivity of germanium-doped optical fibers and its

We review the photosensitivity of germanium-doped optical fibers to ultraviolet light, and especially the role of germanium oxygen

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Dec 11, 2025

Characterization of thermal (in)stability and temperature-dependence

The temperature-dependence and the thermal stability of UV-exposed type-I and type-IIA fiber Bragg gratings written in

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Jan 26, 2026

Growth dynamics of chemical composition gratings in fluorine-doped

The refractive-index modulation of chemical composition gratings in fluorine-germanium-doped silica fibers as a

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May 12, 2026

Long-Period Gratings in Highly Germanium-Doped, Single-Mode

Long-period fiber gratings (LPGs) are well known for their sensitivity to external influences, which make them

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Dec 10, 2025

Effect of germanium doping on the performance of silica based

Abstract In present communication, a germanium doped hexagonal photonic crystal fiber is presented to obtain highly

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Dec 29, 2025

Long-Period Gratings in Highly Germanium-Doped, Single

This work introduces a novel method to inscribe LPGs into highly Ge-doped, single-mode fibers and shows that sensitive LPG-based

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Jul 24, 2025

Bragg Gratings in Optical Fibers: Fundamentals and Applications

Today optical fibers are synonymous with the word “telecommunication”. In addition to applications in telecommunications, optical

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Feb 14, 2026

Fiber Bragg Gratings in Germanium-Doped Highly Birefringent

Fiber Bragg Gratings in Germanium-Doped Highly Birefringent Microstructured Optical Fibers Abstract: We present a dedicated fiber

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Jan 28, 2026

Thermal decay analysis of fiber Bragg gratings at different temperature

Abstract In this study the thermal degradation of gratings inscribed in three types of fiber namely, PS 1250/1500, SM

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Feb 13, 2026

Investigation of the photosensitivity, temperature sustainability and

Three different types of Er doped photosensitive fibers, germanium/erbium (Ge/Er) fiber, tin/germanium/erbium fiber

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Aug 15, 2025

Underlying mechanisms, applications, and limitations of chemical

Different chemical pathways have been presented and chemical composition gratings have been formed in several

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Mar 10, 2026

Regenerated Fibre Bragg Gratings: A critical assessment of more

An Improved Metal-Packaged Strain Sensor Based on A Regenerated Fiber Bragg Grating in Hydrogen-Loaded Boron

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Apr 09, 2026

(PDF) Bragg gratings inscription in weakly-doped fibers

Keywords: Fiber Bragg grating, Inscription dynamics, Fiber sensor Dynamics of the Bragg gratings'' spectrum change

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Mar 23, 2026

Thermal stability of chemical composition gratings in fluorine

A model based on diffusion of dopants in a periodic structure has been applied to describe thermal decay of chemical composition

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Oct 25, 2025

Propagation Characteristics of Germanium Doped Silica Photonic

Abstract - In this paper, the propagation characteristics of a Germanium doped silica Photonic crystal fiber is investigated by using

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Jun 08, 2026

Bragg grating fabrication in germanosilicate fibers by use of near-UV

Using 334-nm light, we demonstrate side writing of Bragg gratings with an index change of ~10 (-4) in germanium

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Sep 16, 2025

Long-Period Gratings in Highly Germanium-Doped, Single-Mode

For these applications, fibers with a high numerical aperture (i.e., fibers with highly germanium (Ge)-doped fused silica

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