研究目的
To evaluate the performance of Sub-Carrier Multiplexing (SCM) based Elastic Optical Networks (EONs) using mathematical and simulative models, focusing on different modulation techniques and amplification schemes to enhance efficiency and reduce distortions.
研究成果
The paper concludes that Optical Phase Modulation (OPM) combined with Erbium Doped Fiber Amplifier (EDFA) provides the best performance in SCM-based EONs, offering higher received RF power, reduced non-linear distortions, and improved bandwidth efficiency compared to other modulation techniques and SOA amplification. This combination enhances resource utilization and supports efficient handling of network traffic in elastic optical networks.
研究不足
The study is based on simulation and mathematical models, which may not fully capture real-world complexities and physical impairments. It focuses on specific modulation and amplification techniques, and the results are limited to the parameters and conditions set in the simulation, such as fixed extinction ratios and noise figures. Future work could involve experimental validation and consideration of additional factors like network scalability and cost.
1：Experimental Design and Method Selection:
The study uses a designed SCM-EON network model evaluated through mathematical modeling and simulation. It involves comparing Direct Modulation (DM), Mach-Zehnder Modulator (MZM), and Optical Phase Modulation (OPM) techniques, along with amplification using Semiconductor Optical Amplifier (SOA) and Erbium Doped Fiber Amplifier (EDFA).
2：Sample Selection and Data Sources:
Three independent input sources are used, modulated with OFDM. Data is generated and analyzed through simulation.
3：List of Experimental Equipment and Materials:
Opti-system simulator and MATLAB for simulation; modulators (DM, MZM, OPM), amplifiers (SOA, EDFA), optical filters, power splitters, multiplexers, de-multiplexers, and photo-detectors.
4：Experimental Procedures and Operational Workflow:
At the transmitter, input sources are OFDM modulated, split, modulated with DM/MZM/OPM, combined, amplified, and transmitted. At the receiver, signals are filtered, amplified with SOA or EDFA, converted to electrical signals, and analyzed. Parameters like modulating frequency (20-21 GHz) and channel spacing (1, 2, 3 GHz) are varied.
5：Data Analysis Methods:
Performance is evaluated based on received RF power using simulation results from Opti-system and MATLAB, with numerical comparisons and graphical analysis.
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