Optimizing multiple-QPM in Fibonacci sequence using simulated annealing algorithm

We have analyzed the simulated annealing algorithm in a Fibonacci based optical superlattices to obtain multiple second harmonic generation (SHG) in a single channel Quasi-Phase matching (QPM) device. The Fibonacci sequence itself has plenty of reciprocal vectors to generate multiple-QPM. To arrange the multiple peaks in a desired order, we have introduced simulated annealing algorithm in the Fibonacci based optical superlattices. The parameters such as temperature, perturbation size and choice of domains which are playing key role in designing the multiple peaks are discussed in detail.