Simulated annealing: An approach for multiple QPM

Abstract

All optical wavelength conversion is made possible with the advent of engineered Quasi-phase matching (QPM) devices. Simulated annealing is an algorithm can be used in QPM technology for designing second harmonic wave of any chosen amplitude and phase profile. In this article, we have used simulated annealing routine for achieving multiple QPM second harmonic generation with equal intensity and channel spacing. Further, the influence of the algorithm temperature and number of crystal domains on designing the multiple channel QPM response is discussed in detail.