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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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High accuracy polarization measurements using binary polarization rotators.

X Steve Yao1, Xiaojun Chen, Tiegen Liu

  • 1Optical Polarization Research Center and Key Laboratory of Opto-electronics Information and technical Science of China Ministry of Education, College of Precision Instrument and Opto-electronics engineering,Tianjin University, Tianjin, 300072, China. syao@generalphotonics.com

Optics Express
|April 15, 2010
PubMed
Summary
This summary is machine-generated.

This study introduces a new system for measuring polarization mode dispersion (PMD) and polarization dependent loss (PDL) using binary magneto-optic rotators. The novel system achieves high accuracy and repeatability for these critical optical fiber parameters.

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Area of Science:

  • Optical Engineering
  • Photonics
  • Telecommunications

Background:

  • Polarization-related parameters are crucial for optical communication systems.
  • Accurate measurement of polarization mode dispersion (PMD) and polarization dependent loss (PDL) is essential for system performance.
  • Existing measurement systems face limitations in accuracy and repeatability.

Purpose of the Study:

  • To develop and demonstrate a novel system for accurate measurement of polarization parameters.
  • To utilize binary magneto-optic polarization rotators for enhanced measurement capabilities.
  • To achieve high accuracy, repeatability, and resolution in DGD, SOPMD, and PDL measurements.

Main Methods:

  • Implementation of a novel system employing binary magneto-optic polarization rotators.
  • Leveraging the binary nature of rotators for precise polarization control.
  • System characterization across the 1480 to 1620 nm wavelength range.

Main Results:

  • Achieved unprecedented accuracies for DGD (2.6 fs), SOPMD (1.39 ps²), and PDL (0.06 dB).
  • Demonstrated high repeatabilities: 0.022 fs for DGD, 0.28 ps² for SOPMD, and 0.034 dB for PDL.
  • Obtained resolutions of 1 fs for DGD, 0.005 ps² for SOPMD, and 0.01 dB for PDL.

Conclusions:

  • The novel system offers superior performance for measuring polarization-related parameters.
  • Binary magneto-optic rotators enable highly accurate and repeatable optical measurements.
  • This technology has significant implications for optical fiber characterization and telecommunication system monitoring.