Low-penalty up to 16-QAM wavelength conversion in a low loss CMOS compatible spiral waveguide

Ros, Francesco Da; Silva, Edson Porto da; Zibar, Darko; Chu, Sai T.; Little, Brent E.; Morandotti, Roberto; Galili, Michael; Moss, David J.; Oxenlewe, Leif K.

doi:10.1364/ofc.2016.tu2k.5

Cited by 2 publications

(2 citation statements)

References 16 publications

(15 reference statements)

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“…Here, we extend our previous system demonstrations of wavelength conversion 17,18 by providing a detailed static (i.e., under continuous wave (CW) operation), and dynamic investigation of wavelength conversion in a 50-cm long high index doped glass spiral waveguide focusing on the performance of the converter for QAM signals. The achievable conversion efficiency (CE) and bandwidth are thoroughly investigated, highlighting the impact of the pump wavelength and power level.…”

Section: Introductionmentioning

confidence: 88%

“…Previous reports of integrated wavelength converters for advanced modulation formats have achieved wavelength conversion of QPSK, [5][6][7] 16-QAM, 8,9 and up to 128-QAM orthogonal frequency division multiplexing (OFDM) 10 using silicon 5,7-10 and silicon-germanium 6 waveguides. However, these materials are well known to be limited by nonlinear absorption at telecom wavelengths, thus motivating the search for other nonlinear material platforms such as AlGaAs, 11 silicon nitride, 12 amorphous silicon, 13 and high index doped glass [14][15][16][17] as they exhibit a much higher nonlinear figureof-merit (FOM) 14 in the telecom wavelength range.…”

Section: Introductionmentioning

confidence: 99%

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Wavelength conversion of QAM signals in a low loss CMOS compatible spiral waveguide

et al. 2017

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We demonstrate wavelength conversion of quadrature amplitude modulation (QAM) signals, including 32-GBd quadrature phase-shift keying and 10-GBd 16-QAM, in a 50-cm long high index doped glass spiral waveguide. The quality of the generated idlers for up to 20 nm of wavelength shift is sufficient to achieve a BER performance below the hard decision forward error correction threshold BER performance (<3.8 × 103), with an optical signal-to-noise ratio penalty of less than 0.3 dB compared to the original signal. Our results confirm that this is a promising platform for nonlinear optical signal processing, as a result of both very low linear propagation loss (<0.07 dB/cm) and a large material bandgap, which in turn ensures negligible nonlinear loss at telecom wavelengths.

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Section: Introductionmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Wavelength conversion of QAM signals in a low loss CMOS compatible spiral waveguide

et al. 2017

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100-Gbps per-channel all-optical wavelength conversion without pre-amplifiers based on an integrated nanophotonic platform

Shekhawat

Karlsson

et al. 2023

Nanophotonics

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All-optical wavelength conversion based on four-wave mixing attracts intense interest in many areas, especially in optical fiber communications, due to the advantages of femtosecond response, modulation-format transparency, and high flexibility in optical network management. In this paper, we present the first optical translation of 32-GBaud 16QAM signals with an integrated Si3N4 nonlinear nanophotonic waveguide. An on-chip continuous-wave conversion efficiency of up to −0.6 dB from S band to C band is achieved in the dispersion-engineered low-loss Si3N4 nonlinear waveguide that is back-end compatible with complementary metal–oxide–semiconductor processes. The high conversion efficiency avoids the use of external optical amplifiers for signal demodulation. The converted idler is successfully received with a sensitivity penalty of less than 0.5 dB. Moreover, pre-amplifier-free multichannel wavelength conversion of over-100-Gbps coherent signals in C band is also demonstrated using the same Si3N4 nanophotonic waveguide via changing the pump wavelength, which shows good flexibility in all-optical signal processing. Additionally, wavelength conversion with a bandwidth over 100 nm can be expected by optimizing the current Si3N4 nanophotonic waveguide, which is promising for commercial coherent fiber communications and has bright prospects in various areas including optical signal processing, imaging, optical spectroscopy, and quantum optics.

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Low-penalty up to 16-QAM wavelength conversion in a low loss CMOS compatible spiral waveguide

Abstract: Wavelength conversion of 32-Gbaud QPSK and 10-Gbaud 16-QAM is demonstrated using a 50-cm long low loss spiral Hydex-glass waveguide. BER < HD-FEC threshold is achieved over 10 nm bandwidth with OSNR penalty < 0.5 dB.

Cited by 2 publications

References 16 publications

Wavelength conversion of QAM signals in a low loss CMOS compatible spiral waveguide

Wavelength conversion of QAM signals in a low loss CMOS compatible spiral waveguide

100-Gbps per-channel all-optical wavelength conversion without pre-amplifiers based on an integrated nanophotonic platform

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