研究目的
To enhance the bandwidth and increase the capacity of the optical fibre communication system by reducing the dispersion in the fibre, focusing on reducing chromatic dispersion using dispersion compensated fibre (DCF) in WDM systems.
研究成果
DCF is necessary to decrease the attenuation and dispersion of the system, with mixed compensation producing the best results among the three techniques tested. It offers a good quality factor and BER for transmission power above 12 dB, making it an effective solution for WDM systems at 30 GB/s.
研究不足
The attenuation or loss of DCF is not negligible, requiring the use of amplifiers such as EDF for compensation. The study also notes that while DCF reduces dispersion, it does not significantly reduce cost compared to other techniques like fibre Bragg gratings.
1：Experimental Design and Method Selection:
The study focuses on reducing chromatic dispersion in optical fibre communication systems using DCF in WDM systems. Three dispersion compensation techniques (pre-compensation, post-compensation, and mix compensation) are compared.
2：Sample Selection and Data Sources:
The study uses WDM systems with increasing numbers of channels (28, 30, 40) to observe the effect of dispersion compensation.
3：List of Experimental Equipment and Materials:
Dispersion Compensated Fibre (DCF), Single Mode Fibre (SMF), Multimode Fibre (MMF), Wavelength Division Multiplexing (WDM) systems, optical amplifiers (pre-amplifier, post-amplifier, inline amplifier).
4：Experimental Procedures and Operational Workflow:
The study involves setting up simulation models for 28, 30, and 40 channels, applying three dispersion compensation techniques, and analyzing the results in terms of transmission power vs. Q factor and transmission power vs. Bit Error Rate.
5：Data Analysis Methods:
The analysis involves comparing the three dispersion compensation techniques based on Q factor and Bit Error Rate (BER) measurements.
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