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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 12 — Apr. 20, 2009
  • pp: 2214–2219

Polarization dynamics in optical ground wire network

Jesse Leeson, Xiaoyi Bao, and Alain Côté  »View Author Affiliations


Applied Optics, Vol. 48, Issue 12, pp. 2214-2219 (2009)
http://dx.doi.org/10.1364/AO.48.002214


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Abstract

We report the polarization dynamics in an optical ground wire (OPGW) network for a summer period and a fall period for what is believed to be the first time. To better observe the surrounding magnetic fields contribution to modulating the state of polarization (SOP) we installed a Faraday rotating mirror to correct reciprocal birefringence from quasi-static changes. We also monitored the OPGW while no electrical current was present in the towers’ electrical conductors. The spectral analysis, the arc length mapped out over a given time interval on a Poincaré sphere, histograms of the arc length, and the SOP autocorrelation function are calculated to analyze the SOP changes. Ambient temperature changes, wind, Sun- induced temperature gradients, and electrical current all have a significant impact on the SOP drift in an OPGW network. Wind-generated cable oscillations and Sun-induced temperature gradients are shown to be the dominant slow SOP modulations, while Aeolian vibrations and electrical current are shown to be the dominant fast SOP modulations. The spectral analysis revealed that the electrical current gives the fastest SOP modulation to be 300 Hz for the sampling frequency of 1 KHz . This has set the upper speed limit for real-time polarization mode dispersion compensation devices.

© 2009 Optical Society of America

OCIS Codes
(060.2300) Fiber optics and optical communications : Fiber measurements
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: January 26, 2009
Revised Manuscript: March 16, 2009
Manuscript Accepted: March 26, 2009
Published: April 13, 2009

Citation
Jesse Leeson, Xiaoyi Bao, and Alain Côté, "Polarization dynamics in optical ground wire network," Appl. Opt. 48, 2214-2219 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-12-2214

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