Physical layer Data Encryption using Two-level Constellation Masking in 3D-CAP-PON [Early Posting]
A novel physical layer data encryption using two-level constellation masking in three-dimension carrier-less amplitude and phase modulation passive optical network (3D-CAP-PON) is proposed in this letter. The chaotic sequence generated by the Chua''s circuit model realizes two-level encryption of displacement masking and constellation rotation for 3D constellation. We successfully conduct an experiment demonstrating 8.7 Gb/s 3D-CAP-8 data transmission over 25 km standard single-mode fiber (SSMF). With two-level constellation masking, a key space size of 2.1×10<sup>85 </sup>is achieved to bring about high security and good encryption performance, suggesting broad application prospects in future short-range secure communications.
Chen Shuaidong,Liu Bo,Mao Yaya,Ren Jianxin,Song Xiumin,Ullah Rahat,Zhao Delin,Jiang Lei,Han Shun,Zhao Jianye,Shen Jiajia,Liu Xueyang. Physical layer Data Encryption using Two-level Constellation Masking in 3D-CAP-PON[J].Chinese Optics Letters,2021,19(1):01.