International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Optical network are used widely in all types of telecommunication networks. These have capability of transmitting large amount of data across the network. It uses the light beams to transmit data over various segments. WDM is a technology that plays a vital role in bandwidth utilization. By means of this technology the bandwidth can be utilized effectively and provide a better way of communication. WDM has modify the routing process to a great extent. Routing allows that which path is to be used for the connection establishments. Wavelength assignment algorithms make use of available wavelengths in order to achieve goal of maximizing the number of optical connections.