10Gbps-Class, bandwidth-symmetric, OCDM-PON system using hybrid multi-port and SSFBG en/decoder

A next generation access network becomes necessary to upgrade the systems, providing a larger dedicated bandwidth to each user. Optical code division multiple access (OCDMA) is one promising candidate for new-generation broadband multiple access technique with unique features of full asynchronous transmission, low latency access, soft capacity on demand as well as optical layer security. Recently, a cost-effective OCDMA system using a single multi-port en/decoder at an optical line terminal (OLT) and superstructured fiber Bragg grating (SSFBG) encoder/decoders at each optical network unit (ONU) in an optical network has been proposed and demonstrated. In this paper, we report our proposed 10 Gbps-class, bandwidth-symmetric, OCDM-PON system, which includes a system configuration and the characteristics of multi-port and SSFBG encoder/decoder. Moreover, we describe the demonstration of 8×8 full-duplex, asynchronous, 10 Gbps, DPSK-OCDMA system over 50 km transmission.