Modelling chaos in asymmetric optical fibres

Kumar, Das Soumitro; Creagh, S.; Sujecki, S.; Benson, Trevor M.

Abstract

A ray dynamical approach is developed for the study of large-core asymmetric step index fibres (SIF), especially those made from chalcogenide glasses (ChGs) which can exhibit very high refractive index, large numerical aperture, and which are transparent at mid-infrared wavelengths. The model allows for deformations of the SIF away from concentric circular structures, and for the light rays captured by the fibre to behave chaotically within the asymmetric boundaries of the fibre. Chaotic and periodic rays can be classified by the Poincaré surface of sections (SOSs). In the model, the ray dynamics in the SIF are approximated by dividing the SOSs into pixels; the construction of a transfer matrix stores all the mapping probabilities. The light intensity distribution in the SOSs is efficiently propagated using the constructed transfer matrix, providing a viable alternative to propagating all the rays in the SIF by brute force ray tracing. The model enables the rapid calculation of the power accumulated in the fibre core following an arbitrary excitation.

Citation

Kumar, D. S., Creagh, S., Sujecki, S., & Benson, T. M. (2017, July). Modelling chaos in asymmetric optical fibres. Presented at 2017 19th International Conference on Transparent Optical Networks (ICTON), Girona, Spain

• Presentation Conference Type: Edited Proceedings
• Conference Name: 2017 19th International Conference on Transparent Optical Networks (ICTON)
• Start Date: Jul 2, 2017
• End Date: Jul 6, 2017
• Acceptance Date: Apr 21, 2017
• Online Publication Date: Sep 4, 2017
• Publication Date: 2017
• Deposit Date: Jul 21, 2017
• Publicly Available Date: Sep 4, 2017
• Journal: International Conference on Transparent Optical Networks (ICTON)
• Electronic ISSN: 2161-2064
• Peer Reviewed: Peer Reviewed
• Pages: 1-5
• Series ISSN: 2161-2064
• Book Title: 2017 19th International Conference on Transparent Optical Networks (ICTON)
• ISBN: 978-1-5386-0860-9
• DOI: https://doi.org/10.1109/ICTON.2017.8024908
• Keywords: Surface of sections, chaos, chalcogenide glasses, mid-infrared photonics, step index fibre
• Public URL: https://nottingham-repository.worktribe.com/output/881059
• Publisher URL: http://ieeexplore.ieee.org/abstract/document/8024908/
• Related Public URLs: https://icton2017.udg.edu/
• Contract Date: Jul 21, 2017