Cross-correlation frequency-resolved optical gating scheme based on a periodically poled lithium niobate waveguide for an optical arbitrary waveform measurement

摘要

This study proposes a novel scheme of a cross-correlation frequency-resolved optical gating (X-FROG) measurement for an optical arbitrary waveform (OAW) based on the sum frequency generation (SFG) effect of a periodically poled lithium niobate (PPLN) waveguide.Based on the SFG effect and combined with the principal component generalized projects algorithm on a matrix,the theory model of the scheme is established.Using Matlab,the proposed OAW measurement X-FROG scheme using the PPLN waveguide is simulated and studied.Simulation results show that a rectangular pulse is a suitable gate pulse because of its low errors.Moreover,the increased complexity of OAW and phase mismatch decrease measurement accuracy.