Fig. 2. Modeling of the PED.

(A) OLS in the general mode: The encoder encrypts the inputs into their OLS representations, where the decoder can correct the bit error induced by the transmission noise and reduce the bit ER. Numerical results of the general mode are shown here. A.U., arbitrary units. (B) OLS in the data-specific mode: The OLS representations of inputs (the fiber outputs) are imposed by a continuous Gaussian distribution function, where the interpolation is uniform, while the reconstructions assemble around the original items. Numerical results of the data-specific mode are shown here. (C) Reconstruction quality (fidelity) improves with the increasing of the OLS dimensionality rapidly when the compression ratio is large and turns gradually when the OLS dimensionality is adequate. Numerical examples of the reconstructed digit “2” at different OLS dimensionality are displayed.