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Measurement of the differential group delay in installed optical fibers using polarization multiplexed solitons

We experimentally demonstrate a new technique for measurement of the differential group delay (DGD) in optical fibers using polarization-division multiplexed (PDM) solitons: the change in the separation of orthogonally polarized solitons propagating along different principal axes in a fiber equals t...

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Bibliographic Details
Published in:IEEE photonics technology letters 1999-05, Vol.11 (5), p.593-595
Main Authors: Bakhshi, B., Hansryd, J., Andrekson, P.A., Brentel, J., Kolltveit, E., Olsson, B.K., Karlsson, M.
Format: Article
Language:English
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Summary:We experimentally demonstrate a new technique for measurement of the differential group delay (DGD) in optical fibers using polarization-division multiplexed (PDM) solitons: the change in the separation of orthogonally polarized solitons propagating along different principal axes in a fiber equals the DGD at the signal wavelength. Based on this principle, we use PDM solitons to measure the accumulated DGD at different distances along a 400-km installed fiber. The measured DGD exhibits the expected square-root-of-length dependence, corresponding to a polarization-mode dispersion of 0.26 ps/km/sup 1/2/. The results are in excellent agreement with those obtained by a commercial instrument utilizing Jones matrix eigenanalysis.
ISSN:1041-1135
1941-0174
1941-0174
DOI:10.1109/68.759409