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Scientific article
English

Measurement of nonlinear polarization rotation in a highly birefringent optical fibre using a Faraday mirror

Published inJournal of optics. A, Pure and applied optics, vol. 2, no. 4, p. 314-318
Publication date2000
Abstract

We present both a theoretical and experimental analysis of nonlinear polarization rotation in an optical fibre. Starting from the coupled nonlinear Schrödinger equations an analytical solution for the evolution of the state of polarization, valid for fibres with large linear birefringence and quasi cw input light with arbitrary polarization, is given. It allows us to model straightforwardly go-and-return paths as in interferometers with standard or Faraday mirrors. In the experiment all the fluctuations in the linear birefringence, including temperature- and pressure-induced ones, are successfully removed in a passive way by using a double pass of the fibre under test with a Faraday mirror at the end of the fibre. This allows us to use long fibres and relatively low input powers. The match between the experimental data and our model is excellent, except at higher intensities where deviations due to modulation instability start to appear.

Keywords
  • Nonlinear polarization rotation
  • Nonlinear birefringence
  • Keff effect
  • Faraday mirror
Citation (ISO format)
VINEGONI, Claudio et al. Measurement of nonlinear polarization rotation in a highly birefringent optical fibre using a Faraday mirror. In: Journal of optics. A, Pure and applied optics, 2000, vol. 2, n° 4, p. 314–318. doi: 10.1088/1464-4258/2/4/313
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Article (Published version)
accessLevelRestricted
Identifiers
ISSN of the journal1464-4258
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