Open AccessRandom coupling between groups of degenerate fiber modes in mode multiplexed transmission
Author(s) -
Cristian Antonelli,
Antonio Mecozzi,
Mark Shtaif,
Peter J. Winzer
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.009484
Subject(s) - degenerate energy levels , crosstalk , optics , multiplexing , physics , wavelength division multiplexing , polarization mode dispersion , differential group delay , coherence (philosophical gambling strategy) , wavelength , coherence length , coupled mode theory , optical fiber , refractive index , telecommunications , quantum mechanics , computer science , superconductivity
We study random coupling induced crosstalk between groups of degenerate modes in spatially multiplexed optical transmission. Our analysis shows that the average crosstalk is primarily determined by the wavenumber mismatch, by the correlation length of the random perturbations, and by the coherence length of the degenerate modes, whereas the effect of a deterministic group velocity difference is negligible. The standard deviation of the crosstalk is shown to be comparable to its average value, implying that crosstalk measurements are inherently noisy.