研究目的
Investigating the reception of complex modulation formats with a single photodiode using the Kramers-Kronig scheme and demonstrating its application in ultra-wideband single-photodiode reception of a superchannel.
研究成果
The novel single-polarization Kramers-Kronig reception concept with inherently polarization-aligned KK carrier generation at the receiver was successfully demonstrated, enabling the reception of a 400-Gb/s net rate superchannel. The scheme's robustness to polarization rotations was confirmed, with variations only affecting the CSPR. Transmission over a 60-km SSMF link with a 344-Gb/s net rate superchannel was also achieved, showcasing the scheme's potential for practical applications.
研究不足
The study is limited by the practical implementation challenges of the KK scheme, including the need for tight optical filtering and the impact of polarization rotations on the CSPR.
1：Experimental Design and Method Selection
The study employs a novel Kramers-Kronig scheme based on inherently carrier generation at the receiver for the reception of a distributedly aggregated superchannel.
2：Sample Selection and Data Sources
A 3×33-GBd single-polarization 32QAM superchannel is used for experimental investigations.
3：List of Experimental Equipment and Materials
Includes a single-ended photodiode, analog-to-digital converter (ADC), digital-to-analog converters (DAC), highly nonlinear fiber (HNLF), and various optical components for signal generation and processing.
4：Experimental Procedures and Operational Workflow
The experimental setup involves the generation of a superchannel, its transmission over a 60-km SSMF link, and reception using the novel KK scheme. The impact of polarization rotations on the system performance is also investigated.
5：Data Analysis Methods
Performance evaluation includes Q2-factor vs. CSPR plots and BER measurements to assess the system's performance under various conditions.
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