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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - A Comparative Study of Intradyne and Self-homodyne Systems for Next Generation Intra-datacenter Optical Interconnects
摘要： A detailed comparative analysis is conducted between conventional intradyne and three types of self-homodyne coherent systems for next generation intra-datacenter optical interconnects, in terms of hardware complexity, power consumption and laser power budget.
关键词： Intradyne coherent systems,Intra-datacenter,Self-homodyne coherent systems
更新于2025-09-11 14:15:04
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[IEEE 2018 20th International Conference on Transparent Optical Networks (ICTON) - Bucharest (2018.7.1-2018.7.5)] 2018 20th International Conference on Transparent Optical Networks (ICTON) - Direct-Detection Single-Sideband Systems: Performance Comparison and Practical Implementation Penalties
摘要： There is a growing research interest towards high-capacity communication systems for inter data-center (~80 km) communications. While coherent systems are a mature and high-performance technology, their cost is still very high compared to simpler direct-detection solutions. Recently, advanced digital signal processing (DSP) techniques, such as Single Side-Band (SSB) transmission and Kramers-Kronig (KK) receivers have been proposed to increase both spectral efficiency and reach of such direct-detection systems. Apart from the DSP techniques, the main drawback of these solutions is the requirement of a strong (i.e. several decibels higher than the signal) carrier added at the transmitter. This solution inevitably decreases the resulting signal-to-noise ratio (OSNR) and potentially increase the impact of fiber Kerr non-linearities. In this contribution, will provide further insights on the practical implementation penalties which arise from the addition of such carrier in the framework of single-sideband DMT solutions. In particular, we will focus on the modulator biasing technique to add such carrier.
关键词： single-sideband,Kramers-Kronig,direct-detection,intra-datacenter,optical communications
更新于2025-09-04 15:30:14