A symmetric-structure CDMA-PON system and its implementation

A code-division multiple-access (CDMA) passive optical network is proposed as an optical access network system to satisfy the subscriber's increasing data traffic. A CDMA scheme is used not only for delivering multiple channels to as many remote units, but also for suppressing optical beat noise. In this study, a beat noise environment is analyzed and a transceiver structure to efficiently increase the reverse link rate is suggested. Fundamental experimental results are provided to show its validity.