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189 results on '"Kuschnerov, Maxim"'

1. 200Gb/s VCSEL transmission using 60m OM4 MMF and KP4 FEC for AI computing clusters

Author

Wettlin, Tom, Lin, Youxi, Stojanovic, Nebojsa, Calabrò, Stefano, Wang, Ruoxu, Zhang, Lewei, and Kuschnerov, Maxim

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

We show a beyond 200Gb/s VCSEL transmission experiment. Results are based on 35GHz VCSEL and advanced DSP. We show an AIR of 245Gb/s PAM-6 back-to-back, and 200Gb/s PAM-4 over 60m OM4 fiber assuming KP4-FEC.

Published
2024

2. Photonic Chiplet Interconnection via 3D-Nanoprinted Interposer

Author

Huang, Huiyu, Shi, Zhitian, Talli, Giuseppe, Kuschnerov, Maxim, Penty, Richard, and Cheng, Qixiang

Subjects
Physics - Optics, Physics - Applied Physics
Abstract

Photonic integrated circuits utilize various waveguide materials, each excelling in specific metrics like efficient light emission, low propagation loss, high electro-optic efficiency, and potential for mass production. Inherent shortcomings in each platform push exploration of hybrid and heterogeneous integration, which demands specialized designs and extra fabrication processes for each material combination. Our work introduces a novel hybrid integration scheme employing a 3D-nanoprinted interposer for a photonic chiplet interconnection system. This method represents a generic solution that can readily couple between chips of any material system, with each fabricated on its own technology platform with no change in the established process flow for the individual chips. Mode-size engineering is enhanced by the off-chip parabolic micro-reflectors. The 3D-nanoprinted chip-coupling frame and fiber-guiding funnel enable low-loss, fully passive assembly with a fast-printing process achieving sub-micron accuracy. Mode-field-dimension conversion ratio of 5:2 from fiber to chip is demonstrated with <0.5dB excess loss on top of the 1.7dB inherent coupling loss, marking the largest mode size conversion using non-waveguided components. Additionally, our system demonstrates a 2.5dB die-to-die coupling loss between silicon and InP chips over a 140nm wavelength range (1480nm to 1620nm), showcasing the potential for extensive cross-platform integration by bridging different waveguide materials.

Published
2024

3. Spiking Neural Network Nonlinear Demapping on Neuromorphic Hardware for IM/DD Optical Communication

Author

Arnold, Elias, Böcherer, Georg, Strasser, Florian, Müller, Eric, Spilger, Philipp, Billaudelle, Sebastian, Weis, Johannes, Schemmel, Johannes, Calabrò, Stefano, and Kuschnerov, Maxim

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

Neuromorphic computing implementing spiking neural networks (SNN) is a promising technology for reducing the footprint of optical transceivers, as required by the fast-paced growth of data center traffic. In this work, an SNN nonlinear demapper is designed and evaluated on a simulated intensity-modulation direct-detection link with chromatic dispersion. The SNN demapper is implemented in software and on the analog neuromorphic hardware system BrainScaleS-2 (BSS-2). For comparison, linear equalization (LE), Volterra nonlinear equalization (VNLE), and nonlinear demapping by an artificial neural network (ANN) implemented in software are considered. At a pre-forward error correction bit error rate of 2e-3, the software SNN outperforms LE by 1.5 dB, VNLE by 0.3 dB and the ANN by 0.5 dB. The hardware penalty of the SNN on BSS-2 is only 0.2 dB, i.e., also on hardware, the SNN performs better than all software implementations of the reference approaches. Hence, this work demonstrates that SNN demappers implemented on electrical analog hardware can realize powerful and accurate signal processing fulfilling the strict requirements of optical communications., Comment: 9 pages, 5 figures, accepted for publication by the IEEE/Optica Publishing Group Journal of Lightwave Technology

Published
2023
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4. Experimental Comparison of PAM-8 Probabilistic Shaping with Different Gaussian Orders at 200 Gb/s Net Rate in IM/DD System with O-Band TOSA

Author

Hossain, Md Sabbir-Bin, Böcherer, Georg, Lin, Youxi, Li, Shuangxu, Calabrò, Stefano, Nedelcu, Andrei, Rahman, Talha, Wettlin, Tom, Wei, Jinlong, Stojanović, Nebojša, Xie, Changsong, Kuschnerov, Maxim, and Pachnicke, Stephan

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

For 200Gb/s net rates, cap probabilistic shaped PAM-8 with different Gaussian orders are experimentally compared against uniform PAM-8. In back-to-back and 5km measurements, cap-shaped 85-GBd PAM-8 with Gaussian order of 5 outperforms 71-GBd uniform PAM-8 by up to 2.90dB and 3.80dB in receiver sensitivity, respectively., Comment: submitted to 2022 European Conference on Optical Communication (ECOC)

Published
2022

5. Spiking Neural Network Equalization on Neuromorphic Hardware for IM/DD Optical Communication

Author

Arnold, Elias, Böcherer, Georg, Müller, Eric, Spilger, Philipp, Schemmel, Johannes, Calabrò, Stefano, and Kuschnerov, Maxim

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

A spiking neural network (SNN) non-linear equalizer model is implemented on the mixed-signal neuromorphic hardware system BrainScaleS-2 and evaluated for an IM/DD link. The BER 2e-3 is achieved with a hardware penalty less than 1 dB, outperforming numeric linear equalization.

Published
2022

6. Experimental Comparison of Cap and Cup Probabilistically Shaped PAM for O-Band IM/DD Transmission System

Author

Hossain, Md Sabbir-Bin, Boecherer, Georg, Rahman, Talha, Stojanovic, Nebojsa, Schulte, Patrick, Calabrò, Stefano, Wei, Jinlong, Bluemm, Christian, Wettlin, Tom, Xie, Changsong, Kuschnerov, Maxim, and Pachnicke, Stephan

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

For 200Gbit/s net rates, uniform PAM-4, 6 and 8 are experimentally compared against probabilistic shaped PAM-8 cap and cup variants. In back-to-back and 20km measurements, cap shaped 80GBd PAM-8 outperforms 72GBd PAM-8 and 83GBd PAM-6 by up to 3.50dB and 0.8dB in receiver sensitivity, respectively, Comment: Originally published in ECOC-2021. We have updated Figure 3. The change also affects the overall outcome. In contrast to the published version, compared to uniform PAM-8 72 GBd, PS-PAM-8 80 GBd performance is updated to 3.50 dB instead of 5.17 dB, while for PAM-6 83 GBd the gain becomes 0.8 dB instead of 2.17 dB. The changes are adapted in all sections except the experimental setup and DSP section

Published
2022
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7. Spiking Neural Network Equalization for IM/DD Optical Communication

Author

Arnold, Elias, Böcherer, Georg, Müller, Eric, Spilger, Philipp, Schemmel, Johannes, Calabrò, Stefano, and Kuschnerov, Maxim

Subjects
Electrical Engineering and Systems Science - Signal Processing, Computer Science - Neural and Evolutionary Computing
Abstract

A spiking neural network (SNN) equalizer model suitable for electronic neuromorphic hardware is designed for an IM/DD link. The SNN achieves the same bit-error-rate as an artificial neural network, outperforming linear equalization.

Published
2022

8. 1.71 Tb/s Single-Channel and 56.51 Tb/s DWDM Transmission over 96.5 km Field-Deployed SSMF

Author

Pittala, Fabio, Braun, Ralf-Peter, Boecherer, Georg, Schulte, Patrick, Schaedler, Maximilian, Bettelli, Stefano, Calabro, Stefano, Kuschnerov, Maxim, Gladisch, Andreas, Westphal, Fritz-Joachim, Xie, Changsong, Chen, Rongfu, Wang, Qibing, and Zheng, Bofang

Subjects
Electrical Engineering and Systems Science - Signal Processing
Abstract

We report an industry leading optical dense wavelength division multiplexing (DWDM) field trial with line rates per channel exceeding 1.66 Tb/s using 130 GBaud dual-polarization probabilistic constellation shaping 256-ary quadrature amplitude modulation (DP-PCS256QAM) in a high capacity data center interconnect (DCI) scenario. This research trial was performed on 96.5 km of field-deployed standard single mode G.652 fiber infrastructure of Deutsche Telekom in Germany employing Erbium-doped fiber amplifier (EDFA)-only amplification. A total of 34 channels were transmitted with 150 GHz spacing for a total fiber capacity of 56.51 Tb/s and a spectral efficiency higher than 11bit/s/Hz. In the single-channel transmission scenario 1.71 Tb/s was achieved over the same link. In addition, we successfully demonstrate record net bitrates of 1.88 Tb/s in back-to-back (B2B) using 130 GBaud DP-PCS400QAM., Comment: This work has been submitted to the IEEE Photonics Technology Letters (PTL) for possible publication

Published
2021
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19. 1.71 Tb/s Single-Channel and 56.51 Tb/s DWDM Transmission Over 96.5 km Field-Deployed SSMF

Author

Pittala, Fabio, primary, Braun, Ralf-Peter, additional, Bocherer, Georg, additional, Schulte, Patrick, additional, Schaedler, Maximilian, additional, Bettelli, Stefano, additional, Calabro, Stefano, additional, Kuschnerov, Maxim, additional, Gladisch, Andreas, additional, Westphal, Fritz-Joachim, additional, Xie, Changsong, additional, Chen, Rongfu, additional, Wang, Qibing, additional, and Zheng, Bofang, additional

Published
2022
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20. Dual-polarization thin-film lithium niobate in-phase quadrature modulators for terabit-per-second transmission

Author

Xu, Mengyue, primary, Zhu, Yuntao, additional, Pittalà, Fabio, additional, Tang, Jin, additional, He, Mingbo, additional, Ng, Wing Chau, additional, Wang, Jingyi, additional, Ruan, Ziliang, additional, Tang, Xuefeng, additional, Kuschnerov, Maxim, additional, Liu, Liu, additional, Yu, Siyuan, additional, Zheng, Bofang, additional, and Cai, Xinlun, additional

Published
2022
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26. 402 Gb/s PAM-8 IM/DD O-Band EML Transmission

Author

Bin Hossain, Md Sabbir, primary, Wei, Jinlong, additional, Pittala, Fabio, additional, Stojanovic, Nebojsa, additional, Calabro, Stefano, additional, Rahman, Talha, additional, Bocherer, Georg, additional, Wettlin, Tom, additional, Xie, Changsong, additional, Kuschnerov, Maxim, additional, and Pachnicke, Stephan, additional

Published
2021
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28. Experimental Comparison of Cap and Cup Probabilistically Shaped PAM for O-Band IM/DD Transmission System

Author

Bin Hossain, Md Sabbir, primary, Bocherer, Georg, additional, Rahman, Talha, additional, Stojanovic, Nebojsa, additional, Schulte, Patrick, additional, Calabro, Stefano, additional, Wei, Jinlong, additional, Bluemm, Christian, additional, Wettlin, Tom, additional, Xie, Changsong, additional, Kuschnerov, Maxim, additional, and Pachnicke, Stephan, additional

Published
2021
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29. Single-Carrier Coherent 930G, 1.28T and 1.60T Field Trial

Author

Pittala, Fabio, primary, Braun, Ralf-Peter, additional, Boecherer, Georg, additional, Schulte, Patrick, additional, Schaedler, Maximilian, additional, Bettelli, Stefano, additional, Calabro, Stefano, additional, Kuschnerov, Maxim, additional, Gladisch, Andreas, additional, Westphal, Fritz-Joachim, additional, Xie, Changsonga, additional, Chen, Rongfu, additional, Wang, Qibing, additional, and Zheng, Bofang, additional

Published
2021
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31. Hardware-Efficient Duobinary Neural Network Equalizers for 800 Gb/s IM/DD PAM4 Transmission Over 10 km SSMF

Author

Bluemm, Christian, Liu, Bo, Li, Bing, Rahman, Talha, Hossain, Md Sabbir-Bin, Schaedler, Maximilian, Schlichtmann, Ulf, Kuschnerov, Maxim, and Calabro, Stefano

Abstract

In this article, we discuss challenges and options for scaling IM/DD transceivers towards 800 Gbps. Our focus is CWDM4 PAM4 transmission and our target distance is 10 km in O-band, which is a most urgent use case for next generation optical short reach systems like data centre interconnects and networks. At this reach and rate, chromatic dispersion (CD) becomes the main challenge. Its mitigation is essential and primarily done with digital signal processing. State of the art techniques, however, make transceivers quickly too complex. We show upon measurement results how neural network equalization can meet Volterra equalization performance with 30% less hardware multiplier complexity. When also applying magnitude weight pruning, an additional 43% reduction is possible without performance loss across all CWDM4 lanes. If needed, an added MLSE stage can further push performance in both cases. In any of these configurations, a key enabler against strong CD penalties is duobinary training, which is applicable to all feed-forward equalization architectures.

Published
2023
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33. 800Gb/s-FR4 specification and interoperability analysis

Author

Tian, Yu, primary, Lin, Youxi, additional, Zheng, Jianyu, additional, Tang, Jin, additional, Huang, Qinhui, additional, Ma, Huixiao, additional, Rahman, Talha, additional, Kuschnerov, Maxim, additional, Leung, Raymond, additional, and Zhang, Lewei, additional

Published
2021
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38. List of Contributors

Author

Anderson, Trevor B., primary, André, Paulo, additional, Chen, Lian-Kuan, additional, Chung, Yun C., additional, Clarke, Ken, additional, Costa, Liliana, additional, Dods, Sarah D., additional, Dorrer, Christophe, additional, Grupp, Wolfgang, additional, Hauske, Fabian N., additional, Hewitt, Don, additional, Jiang, Xin, additional, Kilper, Daniel C., additional, Kowalczyk, Adam, additional, Kozicki, Bartłomiej, additional, Kuschnerov, Maxim, additional, Lee, Jun Haeng, additional, Li, Jonathan C., additional, Luis, Ruben S., additional, Pan, Zhongqi, additional, Park, Paul K.J., additional, Shieh, William, additional, Tang, Yan, additional, Teixeira, António, additional, Willner, Alan, additional, Wu, Xiaoxia, additional, Yang, Jeng-Yuan, additional, Yi, Xingwen, additional, and Yu, Changyuan, additional

Published
2010
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49. Toward the Integration of CV Quantum Key Distribution in Deployed Optical Networks

Author

Karinou, Fotini, primary, Brunner, Hans H., additional, Fung, Chi-Hang Fred, additional, Comandar, Lucian C., additional, Bettelli, Stefano, additional, Hillerkuss, David, additional, Kuschnerov, Maxim, additional, Mikroulis, Spiros, additional, Wang, Dawei, additional, Xie, Changsong, additional, Peev, Momtchil, additional, and Poppe, Andreas, additional

Published
2018
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50. A flexible continuous-variable QKD system using off-the-shelf components

Author

Comandar, Lucian Corneliu, primary, Brunner, Hans H., primary, Karinou, Fotini, primary, Fung, Fred, primary, Bettelli, Stefano, primary, Hillerkuss, David, primary, Mikroulis, Spiros, primary, Wang, Dawei, primary, Kuschnerov, Maxim, primary, Xie, Changsong, primary, Poppe, Andreas, primary, and Peev, Momtchil, primary

Published
2017
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