Beyond 200-Gb/s DMT Transmission Over 2-km SMF Based on A Low-Cost Architecture with Single-Wavelength, Single-DAC/ADC and Single-PD

Zhang, Liang; Wei, Jinlong; Stojanović, Nebojša; Prodaniuc, Cristian; Xie, Changsong

doi:10.1109/ecoc.2018.8535319

Cited by 20 publications

(12 citation statements)

References 2 publications

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“…Besides the novel design and development in the device domain, advanced modulation, coding and DSP schemes represent another way to further push forward the line rate even with limited system bandwidth. With respect to modulation formats, the Trellis coding modulation (TCM)-assisted DMT [118] and PAM [119]- [121] signals were used to optimize the Euclidean distances between bits or symbols, thus to improve the overall system performance. Besides, probabilistic-shaped (PS) PAM-8 signal was employed for a demonstration of up to 260 Gbps C-band transmission [122].…”

Section: Recent Advancesmentioning

confidence: 99%

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

Pang

Jacobsen

et al. 2020

J. Lightwave Technol.

153

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Client-side optics are facing an ever-increasing upgrading pace, driven by upcoming 5G related services and datacenter applications. The demand for a single lane data rate is soon approaching 200 Gbps. To meet such high-speed requirement, all segments of traditional intensity modulation direct detection (IM/DD) technologies are being challenged. The characteristics of electrical and optoelectronic components, and the performance of modulation, coding and digital signal processing (DSP) techniques are being stretched to their limits. In this context, we witnessed technological breakthroughs in several aspects, including development of broadband devices, novel modulation formats and coding, and high-performance DSP algorithms for the past few years. A great momentum has been accumulated to overcome the aforementioned challenges. In this paper, we focus on IM/DD transmissions, and provide an overview of recent research and development efforts on key enabling technologies for 200 Gbps per lane and beyond. Our recent demonstrations of 200 Gbps short-reach transmissions with 4level pulse amplitude modulation (PAM) and discrete multitone signals are also presented as examples to show the system requirements in terms of device characteristics and DSP performance. Apart from digital coherent technologies and advanced direct detection systems, such as Stokes-vector and Kramers-Kronig schemes, we expect high-speed IM/DD systems will remain advantageous in terms of system cost, power consumption and footprint for short reach applications in the short-to mid-term perspective.

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Section: Recent Advancesmentioning

confidence: 99%

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

Pang

Jacobsen

et al. 2020

J. Lightwave Technol.

153

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“…Broadband electronic and optoelectronic components are being designed and demonstrated to enable over 100 GBd signal generation and modulation [2][3][4][5]. Advanced modulation formats including pulse amplitude modulation (PAM) and discrete multi-tone (DMT) of data rate over 200 Gbps are demonstrated [3][4][5][6][7]. Powerful and sophisticated DSP algorithms and coding methods, such as feedforward and feedback adaptive equalizers, Volterrabased filters, and/or maximum likelihood sequence estimator (MLSE) based soft decoders are developed to recover the signal from distortions, mainly caused by limited channel bandwidth and nonlinearities during the optical to electrical (O/E) and E/O conversions [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Advanced modulation formats including pulse amplitude modulation (PAM) and discrete multi-tone (DMT) of data rate over 200 Gbps are demonstrated [3][4][5][6][7]. Powerful and sophisticated DSP algorithms and coding methods, such as feedforward and feedback adaptive equalizers, Volterrabased filters, and/or maximum likelihood sequence estimator (MLSE) based soft decoders are developed to recover the signal from distortions, mainly caused by limited channel bandwidth and nonlinearities during the optical to electrical (O/E) and E/O conversions [6,7]. To be able to justify the advantages of the IM/DD over the coherent solutions, the trade-off between complexity in both hardware resources and the DSP should be balanced.…”

Section: Introductionmentioning

confidence: 99%

Beyond 200 Gbps per Lane Intensity Modulation Direct Detection (IM/DD) Transmissions for Optical Interconnects: Challenges and Recent Developments

Pang

Ozoliņš

Udaļcovs

et al. 2019

Optical Fiber Communication Conference (OFC) 2019

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“…The datacenter I/O port transmission speed is soon approaching 200-Gbps per lambda [3]. To meet such a high data rate, the intensity modulation direct detection (IM/DD) systems with advanced modulation formats such as pulse amplitude modulation (PAM) or discrete multi-tone (DMT) have been experimentally demonstrated [4][5][6][7][8]13]. However, such an IM/DD system imposes stringent requirements on optoelectronic devices, bringing a significant challenge to cost-sensitive datacenters.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Volterra filtering [12,13] and machine learning (ML) algorithms [14,15] have been introduced as numerical methods for channel equalization against the nonlinear impairments in 200-Gbps and beyond optical short-reach communication systems [4][5][6][7][8]13]. Compared with the linear signal processing methods employed only in one-dimensional scalar signal space, such as feed forward equalization, these methods handle the signal recovery in a complete and sequential high-dimensional space, known as a Hilbert space (HS).…”

Section: Introductionmentioning

confidence: 99%

Kernel mapping for mitigating nonlinear impairments in optical short-reach communications

Westergren¹,

Pang²,

Udaļcovs³

et al. 2019

Opt. Express

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Nonlinear impairments induced by the opto-electronic components are one of the fundamental performance-limiting factors in high-speed optical short-reach communications, significantly hindering capacity improvement. This paper proposes to employ a kernel mapping function to map the signals in a Hilbert space to its inner product in a reproducing kernel Hilbert space, which has been successfully demonstrated to mitigate nonlinear impairments in optical short-reach communication systems. The operation principle is derived. An intensity modulation/direct detection system with 1.5-µm vertical cavity surface emitting laser and 10-km 7core fiber achieving 540.68-Gbps (net-rate 505.31-Gbps) has been carried out. The experimental results reveal that the kernel mapping based schemes are able to realize comparable transmission performance as the Volterra filtering scheme even with a high order.

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Beyond 200-Gb/s DMT Transmission Over 2-km SMF Based on A Low-Cost Architecture with Single-Wavelength, Single-DAC/ADC and Single-PD

Cited by 20 publications

References 2 publications

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

200 Gbps/Lane IM/DD Technologies for Short Reach Optical Interconnects

Beyond 200 Gbps per Lane Intensity Modulation Direct Detection (IM/DD) Transmissions for Optical Interconnects: Challenges and Recent Developments

Kernel mapping for mitigating nonlinear impairments in optical short-reach communications

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