Coupled two-core integrated waveguides modal analysis

We present a modal analysis of coupled two-core integrated waveguides fabricated by femtosecond laser writing as a function of the core-to-core distance, illuminating position and input light wavelength. In order to do that we use the correlation filter method, implementing the computer generated ho...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-12, Vol.2407 (1), p.12016
Main Authors: Benedicto, David, Collados, M. Victoria, Martín, Juan C., Atencia, Jesús, Vallés, Juan A.
Format: Article
Language:English
Subjects:
Electromagnetic wave filters
Light
Modal analysis
Physics
Spatial light modulators
Waveguides
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Summary:We present a modal analysis of coupled two-core integrated waveguides fabricated by femtosecond laser writing as a function of the core-to-core distance, illuminating position and input light wavelength. In order to do that we use the correlation filter method, implementing the computer generated holograms in a phase-only spatial light modulator. Due to the two-core waveguide symmetry, we prove it is not necessary to encode the complex amplitude in a phase-only device as long as the cores are not strongly coupled. A comparison between experimental and numerical modal weights is presented, showing that simple phase-only match filters allow the modal decomposition of two-core waveguides output beams.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2407/1/012016