An Optical CDMA Network Using Incoherent Optical Processing and Bipolar Spreading Sequences

Code Division Multiple Access (or CDMA) is a multiple access technique based on spectral spreading that has been tremendously successful in the wireless domain. The effectiveness of CDMA in applications like cellular networks, satellite systems and Wireless Local Loop systems has strongly contributed to maintaining the application of CDMA to the optical domain, also known as Optical CDMA, an active area of research and has promised more efficient optical networks. More flexible and efficient spectral allocation, asynchronous and high-speed connectivity, no need of centralized control and simpler protocols are some issues that Optical CDMA networks claim as advantages over other multiple access techniques, specially for LANs [1].