title: Constellation-masked secure communication technique for OFDM-PON.
abstract: This paper proposes a novel secure communication technique using constellation masking for applications in orthogonal frequency division multiplexing passive optical network (OFDM-PON). The constellation masking is applied both on each subcarrier and among different subcarriers. The Arnold mapping is utilized as the parameter function for the mask factors. A interleave length is employed to provide a scalable masking granularity for different ONUs. A 15.54 Gb/s constellation-masked 32QAM-OFDM signal has been successfully transmitted over 25-km single mode fiber in the experiment. Experimental results show that the proposed scheme can effectively protect the system from illegal ONU without wasting the bandwidth. The constellation-masked technique suggests an effective solution for the physical secure communication in future OFDM access network.
authors.affiliation: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Lijia
authors.initials: L
authors.lastname: Zhang
authors.forename: Xiangjun
authors.initials: X
authors.lastname: Xin
authors.forename: Jianjun
authors.initials: J
authors.lastname: Yu