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Updated: Jul 20, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Spectral density matrix description of polarization mode dispersion
Witold Bardyszewski1, David Yevick
1Department of Physics, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada.
Summary
We developed a new power spectral density matrix method to analyze optical pulse behavior, accounting for polarization and birefringence. This formalism helps minimize signal degradation and optimize pulse profiles for better performance.
Area of Science:
- Optical physics
- Signal processing
- Photonics
Background:
- Random fluctuations in local birefringence affect optical pulse propagation.
- Understanding these effects is crucial for minimizing signal degradation in optical systems.
Purpose of the Study:
- Introduce a power spectral density matrix formalism.
- Incorporate pulse shape and field polarization.
- Describe averages over random birefringence fluctuations.
Main Methods:
- Developed a power spectral density matrix formalism.
- Derived equations of motion for the power density matrix.
- Applied the formalism to pulses with arbitrary frequency-dependent polarization and intensity.
Main Results:
- Quantities like differential time delay, power diffusion, and decoherence effects are obtainable from the power density matrix.
- Demonstrated the ability to minimize eye-opening penalty.
- Showcased minimization through proper initial pulse profile selection.
Conclusions:
- The power spectral density matrix formalism provides a comprehensive approach to analyzing optical pulse propagation.
- This method facilitates direct calculation of key signal degradation parameters.
- Enables optimization of initial pulse profiles for enhanced system performance.
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