Polarization-transparent silicon photonic add-drop multiplexer with wideband hitless tuneability

Francesco Morichetti (), Maziyar Milanizadeh, Matteo Petrini, Francesco Zanetto, Giorgio Ferrari, Douglas Oliveira Aguiar, Emanuele Guglielmi, Marco Sampietro and Andrea Melloni
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Francesco Morichetti: Informazione e Bioingegneria
Maziyar Milanizadeh: Informazione e Bioingegneria
Matteo Petrini: Informazione e Bioingegneria
Francesco Zanetto: Informazione e Bioingegneria
Giorgio Ferrari: Informazione e Bioingegneria
Douglas Oliveira Aguiar: Informazione e Bioingegneria
Emanuele Guglielmi: Informazione e Bioingegneria
Marco Sampietro: Informazione e Bioingegneria
Andrea Melloni: Informazione e Bioingegneria

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Flexible optical networks require reconfigurable devices with operation on a wavelength range of several tens of nanometers, hitless tuneability (i.e. transparency to other channels during reconfiguration), and polarization independence. All these requirements have not been achieved yet in a single photonic integrated device and this is the reason why the potential of integrated photonics is still largely unexploited in the nodes of optical communication networks. Here we report on a fully-reconfigurable add-drop silicon photonic filter, which can be tuned well beyond the extended C-band (almost 100 nm) in a complete hitless (>35 dB channel isolation) and polarization transparent (1.2 dB polarization dependent loss) way. This achievement is the result of blended strategies applied to the design, calibration, tuning and control of the device. Transmission quality assessment on dual polarization 100 Gbit/s (QPSK) and 200 Gbit/s (16-QAM) signals demonstrates the suitability for dynamic bandwidth allocation in core networks, backhaul networks, intra- and inter-datacenter interconnects.

Date: 2021
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DOI: 10.1038/s41467-021-24640-5

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