研究目的
Investigating the impact of IQ imbalance on the performance of the direct-detection system utilizing the Kramers-Kronig receiver.
研究成果
The study concludes that amplitude imbalance and timing misalignment should be less than 2 dB and 2 ps, respectively, for the transmission of 112-Gb/s 16-QAM OFDM signal to maintain receiver sensitivity penalties below 1 dB. The findings highlight the importance of minimizing IQ imbalance in direct-detection systems utilizing the Kramers-Kronig receiver.
研究不足
The study focuses on the impact of IQ imbalance on the Kramers-Kronig receiver's performance, with specific constraints on amplitude imbalance and timing misalignment for acceptable receiver sensitivity penalties. The analysis is limited to the transmission of 112-Gb/s 16-QAM OFDM signal.
1：Experimental Design and Method Selection:
The study involves theoretical analysis and numerical simulations to investigate the impact of IQ imbalance on the Kramers-Kronig receiver's performance.
2：Sample Selection and Data Sources:
A 112-Gb/s OFDM signal and its Hilbert transform are generated and sent to the IQM via digital-to-analog converters (DACs).
3：List of Experimental Equipment and Materials:
Includes DACs with an 8-bit resolution, IQ modulator (IQM), laser diode, EDFA, PIN photodiode, and ADC.
4：Experimental Procedures and Operational Workflow:
The optical OFDM signal is combined with the optical carrier, transmitted over standard single-mode fiber (SSMF), and detected by an optically pre-amplified receiver. The signal is then processed using the KK algorithm.
5：Data Analysis Methods:
The bit-error ratio (BER) performance is evaluated by using direct error counting, and the impact of IQ imbalance is analyzed through theoretical and simulation results.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
