研究目的
Investigating the performance enhancement of 112Gbps and beyond Direct Detected DML-Based Transmission using advanced digital signal processing.
研究成果
Advanced DSP techniques significantly enhance the capacity and extend the reach for DML based high speed transmissions, making DML with advanced DSP a promising solution for future WDM based 800GE or 1.6TbE applications and 200Gbps/lambda direct detection.
研究不足
The study is limited by the bandwidth and power requirements of DMLs, and the complexity and power consumption of DSP algorithms.
1：Experimental Design and Method Selection:
The study investigates two DSP architectures for DMLs: regular DSP with FFE and DFE, and enhanced DSP with MLSE equalizer.
2：Sample Selection and Data Sources:
Uses two semiconductor DMLs: a performance-enhanced DML and a conventional DML.
3：List of Experimental Equipment and Materials:
Includes a PRBS15 PAM-4 electrical signal generator, AWG, DML, SSMF, VOA, PIN-type photodiode with TIA, and a real-time oscilloscope.
4：Experimental Procedures and Operational Workflow:
The signal is generated, modulated, transmitted over fiber, attenuated, detected, sampled, and processed offline with DSP.
5：Data Analysis Methods:
BER performance is analyzed against bit rate and ROP for different distances and DSP schemes.
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