研究目的
To propose and evaluate the use of tunable dispersion-compensated modules (TDCMs) to mitigate the power penalty caused by chromatic dispersion in millimeter-wave opto-electronic oscillator (OEO) signals distributed via passive optical networks (PONs) for 5G networks.
研究成果
The integration of tunable dispersion-compensated modules (TDCMs) at the end of each PON branch effectively compensates for chromatic dispersion, enabling power-penalty-free transmission of millimeter-wave OEO signals in 5G networks. Despite the added cost and insertion loss, this approach allows for the use of a single high-quality OEO at the central-office, reducing overall system expenses. Future work should focus on developing integrated optics solutions to lower costs and improve tunability in real-world deployments.
研究不足
The use of TDCMs introduces additional insertion loss (approximately 6 dB for fiber-Bragg-grating-based TDCMs compared to 0.2 dB/km for standard single-mode fiber), which may require optical amplifiers and could increase phase noise. The system is simulated for point-to-point links, and practical implementation in complex networks with multiple base-stations may require automatic tuning mechanisms, potentially adding noise and complexity.
1：Experimental Design and Method Selection:
The study involves simulations to demonstrate the chromatic dispersion effect in microwave and millimeter-wave ranges and the compensation using TDCMs. Theoretical models based on fiber Bragg gratings for TDCMs are employed.
2：Sample Selection and Data Sources:
Simulations are conducted using standard parameters for optical fibers (e.g., G.652D or G.657A with dispersion coefficient of 17 ps/(nm·km) at 1550 nm wavelength) and PON lengths up to 50 km.
3：List of Experimental Equipment and Materials:
Components include lasers, opto-electronic modulators (e.g., Mach-Zehnder modulator), optical fibers, photodiodes, electrical amplifiers, electrical bandpass filters, and TDCMs (e.g., based on chirped fiber Bragg gratings).
4：Experimental Procedures and Operational Workflow:
Simulations start by analyzing dispersion effects at 10 GHz and 39 GHz frequencies over varying fiber lengths. TDCMs are tuned to specific lengths (e.g.,
5：4 km, 1 km) to compensate dispersion, and power penalties are measured with and without TDCMs. Data Analysis Methods:
Results are analyzed through graphical simulations (e.g., plots of power penalty vs. fiber length) to assess the effectiveness of TDCMs in minimizing dispersion effects.
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
