What is Optical CDMA?
CDMA (Code Division Multiple Access) has been extensively studied in the context of microwave communications as it allows users to access any shred channel randomly at any arbitrary time. Its use in optical fiber networks has attracted considerable attention since 1985. In long-haul optical fiber transmission links and networks, the information consists of a multiplexed aggregate data stream originating from many individual subscribers and normally is sent in a well-timed synchronous format. O-CDMA (Optical CDMA) communication systems do not require any time or frequency management. It can operate asynchronously without centralized control and it does not suffer from packet collisions. As a result, O-CDMA systems have lower latencies than TDMA or In a O-CDMA system each bit is divided up into N time periods, called chips. By sending short optical pulse during some chip intervals, but no others, an optical signature sequence or codeword can be created. Each user on the O-CDMA system has
