Characterization of Polarization Pulling in Fiber Optical Parametric Amplifiers

Shao Hao Wang*, Alex Wai

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review


In fiber optical parametric amplifiers (FOPAs), the output states of polarization (SOPs) of both the signal and the idler are affected by the pump SOP through the polarization pulling effect. We proposed a normalized model to characterize the general dynamics of polarization pulling in degenerated pump FOPAs. By using this model, we determined the relationship between the output degree of polarization (DOP) and the gain of the FOPAs over three orders of magnitude changes in polarization-mode dispersion (PMD) coefficient. We demonstrated numerically that when fibers with typical PMD coefficients are used, the output signals of the FOPAs can achieve higher DOP than those of co-propagating fiber Raman amplifiers, which depends on whether the parametric gain is sufficiently large to compensate the PMD-induced phase mismatch. We also found that for FOPAs using different types of fibers with moderate PMD coefficients, this DOP-gain relationship exhibits highly similar behaviors. We thus adopted a set of modified empirical formulas to analyze this relationship. This formula can also describe the relationship between the output DOP and the conversion efficiency of the idler. The results indicate that in all cases studied, FOPAs achieve much stronger polarization pulling to the idlers than the signals.

Original languageEnglish
Article number6800111
Number of pages11
JournalIEEE Journal of Quantum Electronics
Issue number1
Early online date3 Dec 2018
Publication statusPublished - Feb 2019

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

User-Defined Keywords

  • Nonlinear optics
  • parametric oscillators and amplifiers
  • polarization-selective devices


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