Concurrent Error-Free Modulation of Adjacent Kerr Comb Lines on a Silicon Chip

Gopal, Vignesh; Novick, Asher; Rizzo, Anthony; Parsons, Robert L.; Daudlin, Stuart; Ji, Xingchen; Kim, Bok Young; Okawachi, Yoshitomo; Lipson, Michal; Gaeta, Alexander L.; Bergman, Keren

doi:10.1364/cleo_si.2022.sm5g.2

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…We have successfully demonstrated error-free operation with a normal-GVD Kerr comb source and silicon photonic transmitter up to 16 Gb/s/λ for both single bus [23] and evenodd interleaved architectures [22], [24], with channel counts of 20 and 32, respectively. Furthermore, we have recently shown simultaneous modulation of adjacent comb lines at 200 GHz spacing on the same bus, achieving error-free operation for both channels with negligible crosstalk [97]. These initial proof-of-principle data transmission experiments were limited to 32 channels for a variety of pragmatic testing considerations including device insertion losses, packaging limitations, and the number of high-SNR comb lines generated in available fabricated devices.…”

Section: A Integrated Transmittermentioning

confidence: 99%

Petabit-Scale Silicon Photonic Interconnects With Integrated Kerr Frequency Combs

Rizzo

Daudlin

Novick

et al. 2023

IEEE J. Select. Topics Quantum Electron.

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Silicon photonics holds significant promise in revolutionizing optical interconnects in data centers and high performance computers to enable scaling into the Pb/s package escape bandwidth regime while consuming orders of magnitude less energy per bit than current solutions. In this work, we review recent progress in silicon photonic interconnects leveraging chipscale Kerr frequency comb sources and provide a comprehensive overview of massively scalable silicon photonic systems capable of capitalizing on the large number of wavelengths provided by such combs. We first consider the high-level architectural constraints and then proceed to detail the corresponding fundamental device designs supported by both simulated and experimental results. Furthermore, the majority of experimentally measured devices were fabricated in a commercial 300 mm foundry, showing a clear path to volume manufacturing. Finally, we present various system-level experiments which illustrate successful proof-ofprinciple operation, including flip-chip integration with a codesigned CMOS application-specific integrated circuit (ASIC) to realize a complete Kerr comb-driven electronic-photonic engine. These results provide a viable and appealing path towards future co-packaged silicon photonic interconnects with aggregate perfiber bandwidth above 1 Tb/s, energy consumption below 1 pJ/bit, and areal bandwidth density greater than 5 Tb/s/mm 2 .

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Section: A Integrated Transmittermentioning

confidence: 99%

Petabit-Scale Silicon Photonic Interconnects With Integrated Kerr Frequency Combs

Rizzo

Daudlin

Novick

et al. 2023

IEEE J. Select. Topics Quantum Electron.

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“…1c). Previous studies on the transmitter have shown this regime allows designers to guarantee a minimum 𝜆 ag using resonator FSRs smaller than the total optical bandwidth, unlocking a path toward designing ultra-broadband links with Kerr comb sources [12,14].…”

Section: Introductionmentioning

confidence: 99%

Scaling Comb-Driven Resonator-Based DWDM Silicon Photonic Links to Multi-Tb/s in the Multi-FSR Regime

James¹,

Novick²,

Rizzo³

et al. 2023

Preprint

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The use of chip-based micro-resonator Kerr frequency combs in conjunction with dense wavelength-division multiplexing (DWDM) enables massively parallel intensity-modulated direct-detection (IM-DD) data transmission with low energy consumption. Resonator-based modulators and filters used in such systems can limit the number of usable wavelength channels due to practical constraints on the maximum achievable free spectral range (FSR). In this work, we introduce the design of multi-Tb/s comb-driven resonator-based silicon photonic links by leveraging the multi-FSR regime. We demonstrate the viability of the link architecture with yield estimates that are supported by extensive wafer-scale measurements of 704 micro-resonators fabricated in a commercial complementary metal–oxide–semiconductor (CMOS) foundry. We show that a 2.80 Tb/s link is realizable with a ≥ 6σ yield (~99.999%), and aggregate bandwidths of 3.76 Tb/s and 4.72 Tb/s are possible if yield targets are relaxed (3σ and 1σ respectively). All designs represent a 1.94—3.28× boost to aggregate link bandwidth while maintaining BER ≤ 10−10 performance, with a theoretical bandwidth of 10.51 Tb/s being possible for sufficiently robust resonators. High-speed BER measurements informed co-optimization of data rate and aggressor spacing (λag), limiting any additional loss-based power penalties to off-resonance insertion loss (IL) and routing loss. This work demonstrates that, through the multi-FSR regime, there is a clear path toward Kerr comb-driven ultra-broadband, high bandwidth silicon photonic links that can support next-generation data centers and high performance computers.

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Simultaneous Error-Free Data Modulation with Silicon Microdisks in the Multi-FSR Regime for Scalable DWDM Links

Gopal,

Rizzo,

Hattink

et al. 2023

2023 Optical Fiber Communications Conference and Exhibition (OFC)

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Concurrent Error-Free Modulation of Adjacent Kerr Comb Lines on a Silicon Chip

Abstract: We demonstrate the first error-free simultaneous modulation of multiple Kerr comb lines with cascaded SiP microdisk modulators. Data rates up to 20 Gb/s/λ are shown, supporting the feasibility of Kerr comb-driven SiP DWDM transmitters.

Cited by 3 publications

References 4 publications

Petabit-Scale Silicon Photonic Interconnects With Integrated Kerr Frequency Combs

Petabit-Scale Silicon Photonic Interconnects With Integrated Kerr Frequency Combs

Scaling Comb-Driven Resonator-Based DWDM Silicon Photonic Links to Multi-Tb/s in the Multi-FSR Regime

Simultaneous Error-Free Data Modulation with Silicon Microdisks in the Multi-FSR Regime for Scalable DWDM Links

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