Optical networks have been widely implemented and they are usually used as the backbone of high-capacity telecommunication infrastructures. However, the nowadays traffic demand over these networks has increased in a way that congestion over the architecture is considerable. Due to the high costs of implementing new optical links, the routing and wavelength assignment process become an important point of analysis. This paper presents a time-efficient routing and wavelength assignment algorithm for optical mesh networks by applying bio-inspired calculation methods. The algorithm's main goal is to reduce computational costs and time during lightpath selection and wavelength assignment.