Optical Code Division Multiple Access (OCDMA) is a type of multiplexing technique that allows several users to share the same fiber-optic link by assigning each of them a unique optical code. This includes Device fabrication and integration of micro-ring resonator array structures, thereby enabling reconfigurable and scalable OCDMA encoders and decoders. Joseph Bannister Joe Touch. Although a prerequisite for OCDMA, optical coding distinguishes itself from OCDMA through major applications where codes are not applied to data and carry network-level information other than user identity. Part I starts with the fundamentals of light propagation in optical fibers, multiple access protocols, and their. As multiple accessing techniques that can be used to provide access to multiple users to transmit data to same channel simultaneously without any scheduling or delay in transmission, Optical Code Division Multiple Access (OCDMA) has been an alluring for the past few decades.