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Error Vector Magnitude as a Performance Measure for Advanced Modulation Formats

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13 Author(s)
Schmogrow, R. ; Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany ; Nebendahl, B. ; Winter, M. ; Josten, A.
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We examine the relation between optical signal-to-noise ratio (OSNR), error vector magnitude (EVM), and bit-error ratio (BER). Theoretical results and numerical simulations are compared to measured values of OSNR, EVM, and BER. We conclude that the EVM is an appropriate metric for optical channels limited by additive white Gaussian noise. Results are supported by experiments with six modulation formats at symbol rates of 20 and 25 GBd generated by a software-defined transmitter.

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Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 1 )