Optimizational 6-bit all-optical quantization with soliton self-frequency shift and pre-chirp spectral compression techniques based on photonic crystal fiber

Abstract

In this paper, we optimize a proposed all-optical quantization scheme based on soliton self-frequency shift (SSFS) and pre-chirp spectral compression techniques. A 10m-long high-nonlinear photonic crystal fiber (PCF) is used as an SSFS medium relevant to the power of the sampled optical pulses. Furthermore, a 10m-long dispersion flattened hybrid cladding hexagonal-octagonal PCF (6/8-PCF) is utilized as a spectral compression medium to further enhance the resolution. Simulation results show that 6-bit quantization resolution is still obtained when a 100m-long dispersion-increasing fiber (DIF) is replaced by a 6/8-PCF in spectral compression module.

Exact solitary wave solutions of a nonlinear Schrödinger equation model with saturable-like nonlinearities governing modulated waves in a discrete electrical lattice

“…Nonlinear equations are widely used as models to describe many important dynamical phenomena in various fields of sciences, particularly in nonlinear optics, [1][2][3][4] in plasma physics, [5,6] in biophysics, [7] in Bose-Einstein condensates, [8] in atomic chain, [9,10] in Fermi-Pasta-Ulam lattice, [11,12] in crystals, [13][14][15][16] and in discrete electrical transmission lines. [17][18][19][20][21][22][23][24] Among these equations, the famous nonlinear Schrödinger (NLS) equation is usually derived from fundamental principles as a primary approximation.…”