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Fast on-line OSNR measurements based on polarisation-nulling method with downhill simplex algorithm

Fast on-line OSNR measurements based on polarisation-nulling method with downhill simplex algorithm

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© The Institution of Engineering and Technology
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A fast on-line OSNR measurement technique which uses the downhill simplex algorithm as a minimum finder is proposed and tested in CW signals for different OSNR levels with excellent agreement. The method is shown to be stable after 8 h of uninterrupted operation and is not affected by environmental temperature change during the test.

Inspec keywords: optical fibre networks; wavelength division multiplexing; optical fibre polarisation

Other keywords: CW signal; online OSNR measurement technique; WDM network; polarisation-nulling method; minimum finder; downhill simplex algorithm

Subjects: Other fibre optical properties; Fibre optics; Optical fibre networks; Optical communication devices, equipment and systems; Multiplexing and switching in optical communication

References

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      • Rasztovits-Wiech, M., Danner, M., Leeb, W.R.: `Optical signal-to-noise ratio measurement in WDM networks using polarization extinction', ECOC98, September 1998, Madrid, Spain, p. 549–550.
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      • W.H. Press , S.A. Teukolsky , W.T. Vetterling , B.P. Flannery . (1992) Numerical recipes in C–The art of scientific computing.
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