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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper CTuI11

Endless Faraday polarization controller for a heterodyne optical system

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Abstract

Coherent optical transmission systems require the states of polarization (SOPs) of the received signal and the local-oscillator signal to be matched. We have constructed a polarization controller based on the Faraday effect.1 Because it is an all-fiber-optic system and has no moving parts, it features low optical loss and fast response. The control algorithm provides endless tracking with only two rotators and assures less than 1 dB of mismatch power penalty under normal operation.

© 1995 Optical Society of America

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