Optimizing the cost function of power series routing algorithm for transparent elastic optical networks.

In this article, it is investigated the impact of different parameters and which parameters to use by the power series routing methodology adapted for reducing the call request blocking probability in transparent elastic optical networks. Some of the used parameters are specifically related to elastic optical networks, such as: slot contiguity, transmission bit rate and modulation format. The amplified spontaneous emission noise generated by optical amplifiers (booster, in-line and pre-amplifier) as well as the losses and gains observed by optical signals along the lightpaths are considered in our simulations. We verified that, depending on the considered parameters and their quantity, there is a perceivable impact on the network performance in terms of blocking probability of call requests. The results revealed the most important parameters and their combinations that shall be considered by the cost function of the power series routing algorithm in our simulated scenarios of elastic optical networks.