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Updated: May 31, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Probability based modeling of cross phase modulation in 16-QAM dispersion compensated coherent systems.
Vahid Tavassoli1, Thomas E Darcie
1Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC, Canada. vahid@uvic.ca
Optics Express
|July 13, 2011
Summary
A new probability model accurately predicts nonlinear phase shifts in multichannel coherent systems. This model is validated for 16-QAM systems, showing less than 12% error, crucial for optical communication performance.
Area of Science:
- Optical Communications
- Nonlinear Optics
- Signal Processing
Background:
- Cross-phase modulation (XPM) significantly impacts signal integrity in multichannel coherent optical systems.
- Accurate modeling of nonlinear effects is essential for high-capacity optical networks.
Purpose of the Study:
- To develop a probability-based model for cross-phase modulation in multichannel amplitude/phase modulated coherent systems.
- To evaluate the standard deviation of nonlinear phase shift in 16-QAM systems under varying conditions.
Main Methods:
- Development of a probability-based analytical model.
- Numerical simulations to evaluate nonlinear phase shift.
- Error analysis to assess model accuracy.
Main Results:
- The model accurately describes cross-phase modulation in multichannel systems.
- Standard deviation of nonlinear phase shift was evaluated for 16-QAM systems.
- Maximum relative error of the model was found to be 12%.
Conclusions:
- The developed probability-based model provides an accurate tool for analyzing nonlinear phase shifts.
- The model's accuracy is validated for 16-QAM systems across different chromatic dispersion and symbol rates.
- This work contributes to the design and optimization of advanced coherent optical communication systems.
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