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Mode-power fluctuations in optical fibers.

B Crosignani, S Wabnitz, P Di Porto

|September 2, 2009

Summary

This study investigates how modal delay, coherence time, and modulation time affect power fluctuations in optical fiber polarization states. Understanding these factors is crucial for stable optical signal transmission.

Area of Science:

Photonics and Optical Communications
Fiber Optics Engineering

Background:

Polarization mode dispersion (PMD) in single-mode optical fibers can lead to signal degradation.
Understanding the interplay between various temporal parameters is essential for mitigating polarization-dependent losses.

Purpose of the Study:

To analyze the impact of mutual modal delay, source coherence time, and signal modulation time on power fluctuations.
To elucidate the relationship between these parameters and polarization state evolution in optical fibers.

Main Methods:

Theoretical modeling of polarization state evolution.
Numerical simulations to evaluate power fluctuations under varying temporal conditions.

Main Results:

Identified specific regimes where mutual modal delay significantly influences power fluctuations.

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Demonstrated the critical role of source coherence time in determining the extent of power variations.

Quantified the effect of signal modulation time on the dynamics of polarization power fluctuations.

Conclusions:

Mutual modal delay, coherence time, and modulation time are key determinants of power fluctuations in optical fiber polarization states.
Optimizing these parameters can enhance the stability and reliability of optical communication systems.