Abstract

In standard single-mode fiber (SMF) transmission systems, a polarization stabilizer is useful for optimizing the performance of polarization dependent systems or devices. We have proposed and developed a polarization stabilizer which employs liquid crystal (LC) rotatable waveplates. It has a simple configuration, no moving parts, and endless-control characteristic. High polarization stability was confirmed under various state of polarization (SOP) fluctuations. The maximum response speed of the polarization stabilizer is about 900/s, but this can be increased by improving the controller. We applied the polarization stabilizer to a semiconductor optical amplifier (SOA) having polarization dependence, and achieved good gain stabilization.

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  1. H. Shimizu, S. Yamazaki, T. Ono, and K. Emura, "High practical fiber squeezer polarization controller," J. Lightwave Technol., vol. 9, pp. 1217-1224, Oct. 1991.
  2. S. T. Rumbaugh, M. D. Jones, and L. W. Casperson, "Polarization control for coherent fiber-optic systems using nematic liquid crystals," J. Lightwave Technol., vol. 8, pp. 459-465, Mar. 1990.

J. Lightwave Technol. (2)

H. Shimizu, S. Yamazaki, T. Ono, and K. Emura, "High practical fiber squeezer polarization controller," J. Lightwave Technol., vol. 9, pp. 1217-1224, Oct. 1991.

S. T. Rumbaugh, M. D. Jones, and L. W. Casperson, "Polarization control for coherent fiber-optic systems using nematic liquid crystals," J. Lightwave Technol., vol. 8, pp. 459-465, Mar. 1990.

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