Cyclostationarity-based joint monitoring of symbol-rate, frequency offset, CD and OSNR for Nyquist WDM superchannels | Zendy

Maria Ionescu | Zendy; Masaki Sato | Zendy; Benn C. Thomsen | Zendy

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Cyclostationarity-based joint monitoring of symbol-rate, frequency offset, CD and OSNR for Nyquist WDM superchannels

Author(s) -

Maria Ionescu,

Masaki Sato,

Benn C. Thomsen

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.025762

Subject(s) - optics , symbol rate , polarization mode dispersion , nyquist–shannon sampling theorem , wavelength division multiplexing , phase shift keying , channel spacing , bit error rate , computer science , amplified spontaneous emission , electronic engineering , physics , channel (broadcasting) , wavelength , telecommunications , dispersion (optics) , engineering , laser

Software-defined transceivers can be reconfigured based on demand and existing channel impairments, and as such, monitoring of both signal and channel parameters is necessary. We demonstrate a novel joint estimation method suitable for spectrally efficient Nyquist wavelength-division multiplexing (WDM), based on the cyclostationary property of linearly modulated signals, exploited both in the frequency and time domains. Using a Nyquist superchannel composed of three 10 GBaud channels, we experimentally demonstrate the simultaneous monitoring of symbol-rate with 100% accuracy, roll-off, frequency offset (FO), chromatic dispersion (CD) and optical signal-to-noise ratio (OSNR) with root-mean-square errors (RMSE) of 20%, 4 MHz, 200 ps/nm and 1.5 dB respectively, when the roll-off factor is larger than 0.06 for DP-QPSK and 0.3 for DP-16QAM.

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