Synthesis of SSB Nyquist 16QAM from Twin-SSB QPSK via Optical Subcarrier Processing-based Data Aggregation and its Direct Detection with Hierarchical Blind Phase Search Algorithm

To synthesize a single-sideband (SSB) Nyquist high-order QAM, an optical subcarrier processing (OSP) based scheme is proposed and experimentally demonstrated. A Twin-SSB Nyquist in lower-order QAM is firstly generated using an electro-optic approach. OSP-based data aggregation is then deployed to coherently merge two sidebands in the twin-SSB to synthesize an SSB Nyquist QAM with an increased modu...