C-band 100-GBaud PS-PAM-4 transmission over 50-km SSMF enabled by FIR-filter-based pre-electronic dispersion compensation

Wu, Xiong; Zhang, Junwei; Lau, Alan Pak Tao; Lu, Chao

doi:10.1364/oe.490050

“…The CD-induced frequency-selective fading (FSF) significantly impacts transmission performance 9,10 . To address the dispersion effect, various electronic and optical approaches have been employed, such as digital signal processing (DSP) [11][12][13] and dispersioncompensating fibers (DCFs). However, these methods are burdened with limitations, particularly in terms of a high energy consumption and associated costs 14 .…”

Section: Introductionmentioning

confidence: 99%

Parallel Wavelength-Division-Multiplexed Signal Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Microrings

Lu,

Liu,

Zhang

et al. 2023

Preprint

0

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The proliferation of computation-intensive technologies has led to a significant rise in the number of datacenters, posing challenges for high-speed and power-efficient datacenter interconnects (DCIs). Although inter-DCIs based on intensity modulation and direct detection (IM-DD) along with wavelength-division multiplexing (WDM) technologies exhibit cost-effective, power-efficient, and large-capacity properties, the requirement of multiple laser sources leads to high costs and limited scalability. Moreover, careful considerations must be given to the chromatic dispersion in the C-band as it restricts the transmission length of the optical signals. Electronic and optical approaches based on digital signal processing algorithms or dispersion-compensating fibers suffer from either a high power consumption or a lack of full reconfigurability. In this study, we present an original scalable on-chip parallel IM-DD data transmission system enabled by a single-soliton Kerr microcomb and a reconfigurable microring resonator (MRR)-based dispersion compensator. The highly compact MRR-based Kerr microcomb and dispersion compensator are intrinsically compatible with the parallel processing nature of the WDM link. Besides, the reconfigurability of the dispersion compensator shows the validation for various data-rate transmissions over multiple single-mode fiber lengths of up to 40 km, with a power consumption of below 160 mW, regardless of the modulation format or of the number of transmission channels utilized. Through our experimental validation, we demonstrate an aggregate bit rate of 1.68 Tbit/s over a 20-km-long single-mode fiber using 15 independent wavelength channels spaced at 100 GHz. Our approach holds significant promise for achieving data communications at a scale exceeding 10 terabits, making it highly valuable for future hyper-scale DCIs.

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Parallel wavelength-division-multiplexed signal transmission and dispersion compensation enabled by soliton microcombs and microrings

Liu,

Zhang,

Liu

et al. 2024

Nat Commun

5

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The proliferation of computation-intensive technologies has led to a significant rise in the number of datacenters, posing challenges for high-speed and power-efficient datacenter interconnects (DCIs). Although inter-DCIs based on intensity modulation and direct detection (IM-DD) along with wavelength-division multiplexing technologies exhibit power-efficient and large-capacity properties, the requirement of multiple laser sources leads to high costs and limited scalability, and the chromatic dispersion (CD) restricts the transmission length of optical signals. Here we propose a scalable on-chip parallel IM-DD data transmission system enabled by a single-soliton Kerr microcomb and a reconfigurable microring resonator-based CD compensator. We experimentally demonstrate an aggregate line rate of 1.68 Tbit/s over a 20-km-long SMF. The extrapolated energy consumption for CD compensation of 40-km-SMFs is ~0.3 pJ/bit, which is calculated as being around 6 times less than that of the commercial 400G-ZR coherent transceivers. Our approach holds significant promise for achieving data rates exceeding 10 terabits.

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High-Speed Dispersion-Unmanaged DML-Based IM-DD Optics at C-band With Advanced Nonlinear Equalization and Noise Whitening

Wu,

Xu,

Zhu

et al. 2024

J. Lightwave Technol.

3

0

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C-band 100-GBaud PS-PAM-4 transmission over 50-km SSMF enabled by FIR-filter-based pre-electronic dispersion compensation

Cited by 8 publications

References 25 publications

Parallel Wavelength-Division-Multiplexed Signal Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Microrings

Parallel Wavelength-Division-Multiplexed Signal Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Microrings

Parallel wavelength-division-multiplexed signal transmission and dispersion compensation enabled by soliton microcombs and microrings

High-Speed Dispersion-Unmanaged DML-Based IM-DD Optics at C-band With Advanced Nonlinear Equalization and Noise Whitening

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