Time-dependence of the transmission matrix of a specialty few-mode fiber

2018/09/20 by Jean Yammine, Arsène Tandjè, Yammine, Jean +5
Engineering · #Advanced Photonic Communication Systems #Applied Physics (physics.app-ph) #FOS: Physical sciences #Optical Network Technologies #Optics (physics.optics) #Photonic and Optical Devices

paper · doi:10.48550/arxiv.1810.06643

openalex publication_date 2018/09/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We report a time-resolved measurement of the full transmission matrix (TM) of a short length of specialty annular-core few-mode fiber which guides 10 vector modes. We show how our method can isolate the fiber TM from misalignment contributions from optics upstream and downstream of the fiber. From measurements spanning two days we extract the drift of the fiber TM. We show that drifts in the TM elements are mostly described as correlated phase variations rather than amplitude variations. We show that an empirical model of the fiber TM parametrized in one parameter can successfully account for the drift.

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