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On the Probability Density Function of Inter-core Crosstalk Power in Birefringent Homogeneous Multi-core FibersTopics: Fiber Optics Technology; Optical Communications and Networking

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Subjects/Areas/Topics:Optical Communications and Networking
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Photonics, Optics and Laser Technology

Abstract: In this paper, the inter-core crosstalk (ICXT) of the polarization directions and the probability density functions
(PDFs) of the ICXT power of the polarization directions in weakly coupled birefringent homogeneous
multi-core fibers (MCFs) are studied through numerical simulation. The numerical simulator is based on the
coupled local mode theory (CLMT), which is a rigorous model that has the downside of requiring long computational
times to compute the ICXT field and PDFs of the ICXT power. Conversely, a dual-polarization
discrete changes model (DP-DCM) that allows for much faster estimates of the ICXT field is presented. It is
shown that, for perfectly homogeneous MCFs, the mean ICXT power distribution between the polarization directions
is similar, despite the power distribution at the MCF input, for a mean linear birefringence parameter
ranging from 107 (low birefringence) to 104 (high birefringence), and for different MCF bending radii. It
is also shown that the mean ICXT power estimates obtained with the CLMT and DP-DCM are very similar.
Furthermore, using the CLMT, the PDFs of the ICXT power of the polarization directions are shown to be
chi-squared distributions with two degrees of freedom, and the PDF of the sum of the ICXT power of the
polarizations is shown to follow a chi-squared distribution with four degrees of freedom.(More)

In this paper, the inter-core crosstalk (ICXT) of the polarization directions and the probability density functions (PDFs) of the ICXT power of the polarization directions in weakly coupled birefringent homogeneous multi-core fibers (MCFs) are studied through numerical simulation. The numerical simulator is based on the coupled local mode theory (CLMT), which is a rigorous model that has the downside of requiring long computational times to compute the ICXT field and PDFs of the ICXT power. Conversely, a dual-polarization discrete changes model (DP-DCM) that allows for much faster estimates of the ICXT field is presented. It is shown that, for perfectly homogeneous MCFs, the mean ICXT power distribution between the polarization directions is similar, despite the power distribution at the MCF input, for a mean linear birefringence parameter ranging from 107 (low birefringence) to 104 (high birefringence), and for different MCF bending radii. It is also shown that the mean ICXT power estimates obtained with the CLMT and DP-DCM are very similar. Furthermore, using the CLMT, the PDFs of the ICXT power of the polarization directions are shown to be chi-squared distributions with two degrees of freedom, and the PDF of the sum of the ICXT power of the polarizations is shown to follow a chi-squared distribution with four degrees of freedom.

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Soeiro, R.; Alves, T. and Cartaxo, A. (2018). On the Probability Density Function of Inter-core Crosstalk Power in Birefringent Homogeneous Multi-core Fibers.In Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-286-8, pages 36-42. DOI: 10.5220/0006542700360042

@conference{photoptics18, author={Ricardo O. J. Soeiro. and Tiago M. F. Alves. and Adolfo V. T. Cartaxo.}, title={On the Probability Density Function of Inter-core Crosstalk Power in Birefringent Homogeneous Multi-core Fibers}, booktitle={Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,}, year={2018}, pages={36-42}, publisher={SciTePress}, organization={INSTICC}, doi={10.5220/0006542700360042}, isbn={978-989-758-286-8}, }

TY - CONF

JO - Proceedings of the 6th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, TI - On the Probability Density Function of Inter-core Crosstalk Power in Birefringent Homogeneous Multi-core Fibers SN - 978-989-758-286-8 AU - Soeiro, R. AU - Alves, T. AU - Cartaxo, A. PY - 2018 SP - 36 EP - 42 DO - 10.5220/0006542700360042