Fiber Bragg Grating Spectra in Graded-Index Multimode Optical Fibers

In this paper, we describe a simulation method to analyze the spectral properties of fiber Bragg gratings written in silica-based multimode graded-index fiber, and compare the simulation results with experimental spectra measured in Bragg gratings made in a commercially available graded-index silica...

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Bibliographic Details
Published in:Journal of lightwave technology 2023-07, Vol.41 (13), p.4411-4418
Main Authors: Nan, Ying-Gang, Pan, Junjun, Liu, Fu, Hu, Xuehao, Megret, Patrice
Format: Article
Language:English
Subjects:
Bragg gratings
Coupled modes
coupling coefficient
Couplings
FBG spectra
Fiber Bragg gratings (FBGs)
Fiber gratings
graded-index
Gratings
Mathematical models
multimode fiber (MMF)
Optical fiber communication
Optical fiber theory
Optical fibers
Refractive index
Silicon dioxide
Simulation
Spectra
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Summary:In this paper, we describe a simulation method to analyze the spectral properties of fiber Bragg gratings written in silica-based multimode graded-index fiber, and compare the simulation results with experimental spectra measured in Bragg gratings made in a commercially available graded-index silica fiber. The simulation provides the locations of the resonance wavelengths and uses the coupled-mode theory and the modal field equations to find the detail of the reflection and transmission spectra. A good agreement between the simulation and the experimental results is found.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2022.3228506