Single-Source AlGaAs Frequency Comb Transmitter for 661 Tbit/s Data Transmission in a 30-core Fiber

Hu, Hao; Ros, Francesco Da; Ye, Feihong; Pu, Minhao; Ingerslev, Kasper; Silva, Edson Porto da; Nooruzzaman, Md.; Amma, Yoshimichi; Sasaki, Y.; Mizuno, Takayuki; Miyamoto, Yutaka; Ottaviano, Luisa; Semenova, Elizaveta; Guan, Pengyu; Zibar, Darko; Galili, Michael; Yvind, Kresten; Oxenløwe, Leif Katsuo; Morioka, Toshio

doi:10.1364/cleo_at.2016.jth4c.1

Cited by 16 publications

(15 citation statements)

References 1 publication

(1 reference statement)

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“…To further enhance the effective nonlinearity, we have previously demonstrated the AlGaAs-on-insulator (AlGaAsOI) platform, where moderately low propagation loss (≤ 1.5 dB/cm) high-index contrast nanowaveguides can be realized with a high nonlinear coefficient. This platform has enabled efficient nonlinear processes such as FWM for wavelength conversion [25]- [28], and phasesensitive processing [29], as well as self-phase modulation (SPM) based supercontinuum generation [30].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Optimization of a High-Efficiency AlGaAs-On-Insulator-Based Wavelength Converter for 64- and 256-QAM Signals

Ros

Yankov

Silva

et al. 2017

J. Lightwave Technol.

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Abstract-In this paper, we demonstrate wavelength conversion of advanced modulation formats such as 10-GBd 64-QAM and 256-QAM with high conversion efficiency over a 29-nm spectral window by using four-wave mixing in an AlGaAs-On-Insulator (AlGaAsOI) nano-waveguide. A thorough characterization of the wavelength converter is reported, including the optimization of the AlGaAsOI nano-waveguide in terms of conversion efficiency and associated bandwidth and the analysis of the impact of the converter pump quality and power as well as the signal input power. The optimized converter enables generating idlers with optical signal-to-noise ratio (OSNR) above 30 dB over a 29-nm bandwidth leading to error-free conversion of 64-QAM and 256-QAM with OSNR penalty below 1.0 dB and 2.0 dB respectively. The generated idlers exhibit an OSNR margin to the chosen forward error correction thresholds of >3 dB and >7 dB for 64-QAM and 256-QAM, respectively, that can be used for transmission after conversion.

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Section: Introductionmentioning

confidence: 99%

Characterization and Optimization of a High-Efficiency AlGaAs-On-Insulator-Based Wavelength Converter for 64- and 256-QAM Signals

Ros

Yankov

Silva

et al. 2017

J. Lightwave Technol.

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“…In recent years, a wide variety of chip-scale comb generators have been demonstrated [14,15], enabling transmission of WDM data streams with line rates [16] of up to 12 Tbit/s. Transmission at higher line rates however, requires more carriers and lower noise levels, and still relies on spectral broadening of narrowband seed combs using dedicated optical fibers [8,11,12] or nanophotonic waveguides [17]. In addition, generating uniform combs with a broadband spectral envelope often requires delicate dispersion management schemes, usually in combination with intermediate amplifiers [11].…”

mentioning

confidence: 99%

Microresonator-based solitons for massively parallel coherent optical communications

Marin-Palomo

Kemal

Karpov

et al. 2017

Nature

1,051

713

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Optical solitons are waveforms that preserve their shape while propagating, relying on a balance of dispersion and nonlinearity [1,2]. Soliton-based data transmission schemes were investigated in the 1980s, promising to overcome the limitations imposed by dispersion of optical fibers. These approaches, however, were eventually abandoned in favor of wavelength-division multiplexing (WDM) schemes that are easier to implement and offer improved scalability to higher data rates. Here, we show that solitons may experience a comeback in optical communications, this time not as a competitor, but as a key element of massively parallel WDM. Instead of encoding data on the soliton itself, we exploit continuously circulating dissipative Kerr solitons (DKS) in a microresonator [3,4]. DKS are generated in an integrated silicon nitride microresonator [5] by four-photon interactions mediated by Kerr nonlinearity, leading to low-noise, spectrally smooth and broadband optical frequency combs [6]. In our experiments, we use two interleaved soliton Kerr combs to trans-mit a data stream of more than 50 Tbit/s on a total of 179 individual optical carriers that span the entire telecommunication C and L bands. Equally important, we demonstrate coherent detection of a WDM data stream by using a pair of microresonator Kerr soliton combs one as a multi-wavelength light source at the transmitter, and another one as a corresponding local oscillator (LO) at the receiver. This approach exploits the scalability advantages of microresonator soliton comb sources for massively parallel optical communications both at the transmitter and receiver side. Taken together, the results prove the significant potential of these sources to replace arrays of continuous-wave lasers in high-speed communications. In combination with advanced spatial multiplexing schemes [7,8] and highly integrated silicon photonic circuits [9], DKS combs may bring chip-scale petabit/s transceivers into reach.The first observation of solitons in optical fibers [2] in 1980 was immediately followed by major research efforts to harness such waveforms for long-haul communications [1]. In these schemes, data was encoded on soliton pulses by simple amplitude modulation using on-off-keying (OOK). However, even though the viability of the approach was experimentally demonstrated by transmission over one million kilometres [10], the vision of soliton-based communications was ultimately hindered by difficulties in achieving shape-preserving propagation in real transmission systems [1] and by the fact that nonlinear interactions intrinsically prevent dense packing of soliton pulses in either the time or frequency domain. Moreover, with the advent of wavelength-division multiplexing (WDM), line rates in long-haul communication systems could be increased by rather simple parallel transmission of data streams with lower symbol rates, which are less dispersion sensitive. Consequently, soliton-based communication schemes have moved out of focus over the last two decades. More recently, frequ...

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“…Compared system, the transmission system using SM-MCF with uncoupled cores has the advantage of being free from mode dependent loss and modal differential group delay, thus removing the need for computation-intensive multiple-input multiple-output (MIMO) processing and lowering both power consumption and latency. In order to boost the transmission capacity, dense SDM based on high-count SM-MCFs over 30 cores have been demonstrated recently [4][5].…”

Section: Introductionmentioning

confidence: 99%

“…A large-capacity WDM/SDM transmission system typically consists of thousands or tens of thousands of parallel channels in both wavelength and space [1][2][3][4][5]8] domains, which usually do not exhibit the same transmission performance due to unequal gain of optical amplifier over wavelengths, loss variation of spatial channels and power variation among all the channels. However, the overall transmission performance is usually limited by the worst channels, in order to achieve error-free performance for all the transmitted channels.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh-Spectral-Efficiency WDM/SDM Transmission Using PDM-1024-QAM Probabilistic Shaping With Adaptive Rate

Yankov

Ros

et al. 2018

J. Lightwave Technol.

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We demonstrate wavelength-division-multiplexed (WDM) and space-division-multiplexed (SDM) transmission of probabilistically shaped polarization-division-multiplexed (PDM) 1024-state quadrature amplitude modulation (QAM) channels over a 9.7-km single-mode 30-core fiber, achieving aggregated spectral efficiency of 297.82 bit/s/Hz on a 12.5-GHz grid and 7.01-Tbit/s spatial-super-channel on a 25-GHz grid without multipleinput multiple-output (MIMO) processing. Actual soft-decision forward error correction (SD-FEC) decoding was employed to obtain error-free performance, and adaptive rates and spectral efficiencies for individual WDM/SDM channels have been applied according to their channel conditions, by adjusting the SD-FEC overhead without changing the modulation format. Probabilistically shaped PDM-1024-QAM has been used to further increase the aggregated achievable rate due to the added performance improvement through shaping gain. Index Terms-Optical fiber communication, wavelength division multiplexing (WDM), space division multiplexing (SDM), spectral efficiency, adaptive rate, probabilistic shaping, forward error correction (FEC), 1024-state quadrature amplitude modulation (1024-QAM).

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Single-Source AlGaAs Frequency Comb Transmitter for 661 Tbit/s Data Transmission in a 30-core Fiber

Cited by 16 publications

References 1 publication

Characterization and Optimization of a High-Efficiency AlGaAs-On-Insulator-Based Wavelength Converter for 64- and 256-QAM Signals

Characterization and Optimization of a High-Efficiency AlGaAs-On-Insulator-Based Wavelength Converter for 64- and 256-QAM Signals

Microresonator-based solitons for massively parallel coherent optical communications

Ultrahigh-Spectral-Efficiency WDM/SDM Transmission Using PDM-1024-QAM Probabilistic Shaping With Adaptive Rate

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