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In-band OSNR monitoring with a high sensitivity silicon photonics system-on-chip

Annoni, A. and Melloni, A. and Strain, M. J. and Sorel, M. and Morichetti, F. (2014) In-band OSNR monitoring with a high sensitivity silicon photonics system-on-chip. In: 2014 16th International Conference on Transparent Optical Networks (ICTON). IEEE, Piscataway, New Jersey. ISBN 9781479956005

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A high sensitivity in-band OSNR monitor system integrated on SOI platform is presented. The device exploits a narrow-band microring resonator to select the portion of the channel spectrum that is most sensitive to OSNR variations, and performs an autocorrelation measurement using a Mach-Zehnder interferometer. The proposed scheme allows in-line OSNR monitoring from 8 dB to 28 dB, with 0.2 dB accuracy.