研究目的
Investigating the source of the effect where partial Differential Phase Shift Keying can partially compensate the signal deformation caused by spectrally narrowing the optical channel, and deriving a phenomenological relation that relates the optimum Free Spectral Range to the channel bandwidth.
研究成果
The study successfully investigates the effect of partial Differential Phase Shift Keying on signal deformation caused by spectral narrowing, providing an analytical analysis that matches simulation results with high accuracy. A phenomenological relation for the optimal Free Spectral Range as a function of channel bandwidth is derived, offering a simple formula for predicting the best Free Spectral Range for a given spectral bandwidth channel.
研究不足
The study is limited to the analysis of Gaussian filters and may not fully capture the effects of other filter shapes, although it suggests that the effect is approximately insensitive to the filter's shape. The analysis also assumes a noiseless signal for optimizing the eye-opening.
1：Experimental Design and Method Selection:
The study employs numerical simulations and analytical analysis to investigate the effect of partial Differential Phase Shift Keying on signal deformation caused by spectral narrowing of the optical channel.
2：Sample Selection and Data Sources:
The analysis is based on theoretical models and simulations of optical signals passing through Gaussian filters and Delay Interferometers.
3：List of Experimental Equipment and Materials:
The study involves the use of Gaussian filters and Delay Interferometers for signal processing.
4：Experimental Procedures and Operational Workflow:
The methodology includes applying Gaussian filters to optical signals in the spectral domain, multiplying by their delayed counterparts to evaluate measured intensity, and analyzing the eye-opening to determine the optimal Free Spectral Range.
5：Data Analysis Methods:
The analysis involves measuring the eye-opening as the difference between the lowest '1's and the highest '0's to quantify the effect of the Free Spectral Range on signal quality.
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