研究目的
To suppress four-wave mixing (FWM) effects in a 22×10?Gbps dense wavelength division multiplexed (DWDM) system employing dispersion shifted fiber with 0.2?nm channel spacing.
研究成果
The proposed method using two linearly chirped hyperbolic-tangent-apodized FBGs significantly suppresses FWM effects and yields a Q value above 6 over the entire range of input powers considered, improving the performance of the DWDM system.
研究不足
The study is limited to a 22×10?Gbps DWDM system with 0.2?nm channel spacing and a transmission length of 100?km through a DSF.
1：Experimental Design and Method Selection:
The study proposes a scheme comprising two linearly chirped fiber Bragg gratings (LCFBGs) to suppress FWM effects. The parameters of LCFBGs are optimized to obtain a maximum quality factor for all 22 channels.
2：Sample Selection and Data Sources:
A 22×10?Gbps DWDM system with 0.2?nm channel spacing is used.
3：2?nm channel spacing is used. List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: LCFBGs, dispersion shifted fiber, optical amplifier, pin photodetector (PD), low-pass filter (LPF), and a 3R Regenerator.
4：Experimental Procedures and Operational Workflow:
The input power of the laser source is varied from ?2 to +10?dBm per channel. The output signals are analyzed using a BER analyzer.
5：Data Analysis Methods:
The performance is evaluated in terms of quality factor (Q factor) and bit error rate (BER).
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获取完整内容-
linearly chirped fiber Bragg gratings (LCFBGs)
Suppression of four-wave mixing (FWM) effects in a DWDM system
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dispersion shifted fiber
Transmission medium for the DWDM system
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optical amplifier
Amplification of the optical power of the WDM channels
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pin photodetector (PD)
Detection of the output optical signals
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low-pass filter (LPF)
Filtering of the detected signals
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3R Regenerator
Generation of the electrical signal, original bit sequence, and the modulated electrical signals
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