Fig. 3: Characteristics of spectrally-variant PMs.
From: Efficient dispersion modeling in optical multimode fiber
a Normalized commutativity of \({{{\mathbf{m}}}}\left( \omega \right)\). b The permanence of ordered 200 output PMs computed by averaging the spectral correlation across the entire source spectrum. c Mode profiles of the \(25^{th}\), \(98^{th}\), \(127^{th}\), and \(200^{th}\) output PMs in both H and V polarization at varying wavelengths and the corresponding permanence. The scale bars are 20 μm. d Left: Frequency dependence of individual PM’s group delays in the high order dispersion model; right: zoom insets highlight the group delay evolution of example PMs (black arrows) and degeneracy effects (dashed circles; see main text)
