Digital-Domain Dual Encryption Key-Based Phase Shift Symbol Masking with Cascaded Encoder/Decoder for Secure Coherent Optical Systems

摘要

Secure 10 GSymbol/s, coherent QPSK system using dual encryption-key-based digital-domain symbol masking, and its 50 km SSMF transmission without CD compensation is experimentally demonstrated and achieved FEC limit (BER<; 3.8 × 10^-3).