研究目的
Investigating the effects of varying input power, optical gain, number of channels, and channel spacing on Four Wave Mixing (FWM) and Q-factor in a DWDM system and its implementation in an FTTH system.
研究成果
The simulation results indicate that reducing input power decreases Q-factor but slightly reduces FWM. Increasing optical gain slightly increases Q-factor but also increases FWM. Decreasing the number of channels increases Q-factor and reduces FWM. Increasing channel spacing slightly decreases Q-factor and reduces FWM. An efficient DWDM system designed with optimized parameters was successfully implemented in an FTTH system, showing reduced FWM.
研究不足
The study is limited to simulation results using OptiSystem software, and real-world implementation may present additional challenges not accounted for in the simulation.
1：Experimental Design and Method Selection:
The DWDM system is simulated using OptiSystem software to analyze FWM and Q-factor by varying parameters such as input power, optical gain, number of channels, and channel spacing. NRZ line coding technique is used for modulation.
2：Sample Selection and Data Sources:
The simulation uses a PRBS (Pseudo-Random Bit Sequence) to represent the transmitted data, with a CW (Continuous Wave) laser operating at 193.1 THz as the carrier.
3：1 THz as the carrier.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The setup includes a Mach-Zehnder modulator, SMF (Single Mode Fiber), DCF (Dispersion Compensated Fiber), EDFA amplifiers, and a PIN photo-diode with a low pass filter for the receiver.
4：Experimental Procedures and Operational Workflow:
The transmitter block generates the signal, which is then transmitted through the optical span consisting of SMF and DCF with EDFA amplifiers to compensate for losses. The receiver block analyzes the signal using a BER analyzer.
5：Data Analysis Methods:
The analysis includes observing eye diagrams and optical spectrum to determine Q-factor and FWM effects.
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