Additional information is available at the end of the chapter . IntroductionModern optical communication networks are expected to meet a broad range of services with different and variable demands of bit rate, connection session duration, frequency of use, and set up time [ ]. Thus, it is necessary to build flexible all-optical networks that allow dynamic resources sharing between different users and clients in an efficient way. The alloptical network is able to implement ultrahigh speed transmitting, routing and switching of data in the optical domain, presenting the transparency to data formats and protocols which increases network flexibility and functionality such that future network requirements can be met [ ]. Optical code division multiplexing access OCDM" based technology has attracted a lot of interests due to its various advantages including asynchronous operation, high network flexibility, protocol transparency, simplified network control and potentially enhanced security [ ]. Therefore, recent developments and researches on OCDM" have been experienced an expansion of interest, from short-range networks, such as access networks, to highcapacity medium/large networks.The optical network presents two promising scenarios the transport backbone networks with optical code division multiplexing/wavelength division multiplexing OCDM/WDM technology and the access network with OCDM" technology. In both, transport OCDM/WDM and access OCDM" networks, each different code defines a specific user or logic channel transmitted in a common channel. In a common channel, the interference that may arise between different user codes is known as multiple access interference M"I , and it can limit the number of users utilizing the channel simultaneously [ ]. In this work we © 2013 Durand et al.; licensee InTech. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.have focus on hybrid OCDM/WDM systems. In this one, data signals in routing network configuration are carried on optical code path OCP from a source node to a destination node passing through nodes where the signals are optically routed and switched without regeneration in the electrical domain. Hence, in routing and channel code/wavelength assignment RC" problem, suitable paths and channels are carefully selected among the many possible choices for the required connections [ ].Establishing OCP with higher optical signal-to-noise plus interference ratio SNIR allows reducing the number of retransmissions by higher layers, thus increasing network throughput. Therefore, RC" techniques that consider physical layer impairments for the establishment of an OCP, namely Quality of Transmission-"ware QoT-aware RC", could be much more practical [ -]. For a dynamic traffic scenario the objective is to minimize the blocking probability of the connections by rou...