Dual-polarization wavelength conversion of 16-QAM signals in a single silicon waveguide with a lateral p-i-n diode [Invited]

Francesco Da Ros* (Invited author), Andrzej Gajda (Invited author), Erik Liebig (Invited author), Edson P. da Silva (Invited author), Anna Pęczek (Invited author), Peter David Girouard (Invited author), Andreas Mai, Klaus Petermann (Invited author), Lars Zimmermann (Invited author), Michael Galili (Invited author), Leif Katsuo Oxenløwe (Invited author)

*Corresponding author for this work

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Abstract

A polarization-diversity loop with a silicon waveguide with a lateral p-i-n diode as a nonlinear medium is
used to realize polarization insensitive four-wave mixing. Wavelength conversion of seven dual-polarization
16-quadrature amplitude modulation (QAM) signals at 16 GBd is demonstrated with an optical signal-to-noise
ratio penalty below 0.7 dB. High-quality converted signals are generated thanks to the low polarization dependence
(≤0.5 dB) and the high conversion efficiency (CE) achievable. The strong Kerr nonlinearity in silicon
and the decrease of detrimental free-carrier absorption due to the reverse-biased p-i-n diode are key in ensuring
high CE levels.
Original languageEnglish
JournalPhotonics Research
Volume6
Issue number5
Pages (from-to)B23
ISSN2327-9125
DOIs
Publication statusPublished - 2018

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