Experimental Dataset of Tunable Mode Converter Based on Long-Period Fiber Gratings Written in Few-Mode Fiber: Impacts of Thermal, Wavelength, and Polarization Variations

Juan Soto-Perdomo, Erick Reyes-Vera (), Jorge Montoya-Cardona and Pedro Torres
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Juan Soto-Perdomo: Department of Electronics and Telecommunications, Instituto Tecnológico Metropolitano, Medellín 050034, Colombia
Erick Reyes-Vera: Department of Electronics and Telecommunications, Instituto Tecnológico Metropolitano, Medellín 050034, Colombia
Jorge Montoya-Cardona: Departamento de Óptica, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada 22860, BC, Mexico
Pedro Torres: Escuela de Física, Universidad Nacional de Colombia, Medellín 050034, Colombia

Data, 2023, vol. 9, issue 1, 1-15

Abstract: Mode division multiplexing (MDM) is currently one of the most attractive multiplexing techniques in optical communications, as it allows for an increase in the number of channels available for data transmission. Optical modal converters are one of the main devices used in this technique. Therefore, the characterization and improvement of these devices are of great current interest. In this work, we present a dataset of 49,736 near-field intensity images of a modal converter based on a long-period fiber grating (LPFG) written on a few-mode fiber (FMF). This characterization was performed experimentally at various wavelengths, polarizations, and temperature conditions when the device converted from LP 01 mode to LP 11 mode. The results show that the modal converter can be tuned by adjusting these parameters, and that its operation is optimal under specific circumstances which have a great impact on its performance. Additionally, the potential application of the database is validated in this work. A modal decomposition technique based on the particle swarm algorithm (PSO) was employed as a tool for determining the most effective combinations of modal weights and relative phases from the spatial distributions collected in the dataset. The proposed dataset can open up new opportunities for researchers working on image segmentation, detection, and classification problems related to MDM technology. In addition, we implement novel artificial intelligence techniques that can help in finding the optimal operating conditions for this type of device.

Keywords: optical mode conversion; long-period fiber grating; mode division multiplexing; optical fiber; few-mode fiber (search for similar items in EconPapers)
JEL-codes: C8 C80 C81 C82 C83 (search for similar items in EconPapers)
Date: 2023
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