A 128 Gb/s PAM4 Silicon Microring Modulator With Integrated Thermo-Optic Resonance Tuning

Sun, Jie; Kumar, Ranjeet; Sakib, Meer; Driscoll, Jeffrey B.; Jayatilleka, Hasitha; Rong, Haisheng

doi:10.1109/jlt.2018.2878327

Cited by 195 publications

(114 citation statements)

References 16 publications

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“…where c is the speed of light 2πr M RR is the circumference of the MRR and k is the number of MRRs. Assuming 100 MRRs with a radius of 10 m [11,31], the PWB gets a propagation time of around 21 ps and a throughput of 1/t prop = 50 GS/s. The bottlenecks come from the fact that the balanced PDs has a throughput of 25 GS/s [30] and the TIA has a throughput of 10 GS/s [32].…”

Section: V2 Deap Performancementioning

confidence: 99%

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Digital Electronics and Analog Photonics for Convolutional Neural Networks (DEAP-CNNs)

Bangari

Márquez

Miller

et al. 2020

IEEE J. Select. Topics Quantum Electron.

155

112

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Convolutional Neural Networks (CNNs) are powerful and highly ubiquitous tools for extracting features from large datasets for applications such as computer vision and natural language processing. However, a convolution is a computationally expensive operation in digital electronics. In contrast, neuromorphic photonic systems, which have experienced a recent surge of interest over the last few years, propose higher bandwidth and energy efficiencies for neural network training and inference. Neuromorphic photonics exploits the advantages of optical electronics, including the ease of analog processing, and busing multiple signals on a single waveguide at the speed of light. Here, we propose a Digital Electronic and Analog Photonic (DEAP) CNN hardware architecture that has potential to be 2.8 to 14 times faster while maintaining the same power usage of current state-of-the-art GPUs.

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Section: V2 Deap Performancementioning

confidence: 99%

“…The bottlenecks come from the fact that the balanced PDs has a throughput of 25 GS/s [30] and the TIA has a throughput of 10 GS/s [32]. An individual MRR can be modulated at speeds of 128 GS/s [31], meaning that the modulation frequency of the MRRs does not bottleneck the throughput of the PWB.…”

Section: V2 Deap Performancementioning

confidence: 99%

Digital Electronics and Analog Photonics for Convolutional Neural Networks (DEAP-CNNs)

Bangari

Márquez

Miller

et al. 2020

IEEE J. Select. Topics Quantum Electron.

155

112

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show abstract

“…[21] Depletion-mode MRR modulators meet most of these contradicting requirements and have recently achieved high data rate operation. [7,8,[21][22][23] These ring resonator devices can serve a dual purpose by operating both as a high-speed modulator to transmit data and as a statically biased wavelength-selective filter to receive this data at the other end of the optical link. [16] Photodiodes should convert the incoming light from the wavelength-selective MRR filter to an electrical current with high efficiency, contribute minimal additional noise, and have small capacitance.…”

Section: System Architecturementioning

confidence: 99%

“…[4][5][6][7] These MRR modulators can support very high data rates, with a recent depletion-mode device achieving 128 Gb s −1 four-level pulse amplitude modulation (PAM4) operation. [8] The dual process occurs at the receiver (RX) side with MRR filters utilized to drop a specific wavelength at a given channel for photodiodes to convert the optical power to current for detection by CMOS front-end circuits. [9] This necessitates that the photodiodes exhibit low noise and high bandwidth to support the optical link performance.…”

Section: Introductionmentioning

confidence: 99%

Design Considerations for Energy Efficient DWDM PAM4 Transceivers Employing Avalanche Photodiodes

Kumar

Huang

Zeng

et al. 2020

Laser & Photonics Reviews

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An effective approach to increase per‐fiber bandwidth is to combine per‐wavelength four‐level pulse amplitude modulation (PAM4) with dense wavelength division multiplexing (DWDM). Silicon photonic transceivers based on microring resonator modulators and drop filters can allow for an efficient realization of this. Utilizing avalanche photodiodes (APDs) in the receiver front‐ends of these transceivers can significantly improve sensitivity, allowing for reduced source laser power and overall improved power efficiency. This paper analyzes the optical‐modulation amplitude (OMA) sensitivity of these APD‐based PAM4 receivers in a silicon photonic DWDM link. A comprehensive link budget is considered that takes into account various system losses and relevant noise sources. Modeling with a developed APD that has a maximum 230 GHz gain‐bandwidth product predicts sensitivity improvements at 32 to 64 Gb s−1 PAM4 ranging from 9.8 to 12 dB relative to a conventional p‐i‐n photodiode. Scaling the APD gain‐bandwidth to 310 GHz allows support of 112 Gb s−1 with −13.2 dBm OMA sensitivity at a BER of 2.4×10−4 with an APD gain of 10. Utilizing the presented architecture, link budget analysis predicts a 9.5x reduction in laser power with APDs and that 38 mW source laser optical power can support a four‐channel DWDM link operating at an aggregate 448 Gb s−1 data rate.

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“…Silicon photonics (SiPh) is a decisive technology, by exploiting advanced CMOS process for large-yield mass fabrication, high-density photonic integration can be realized. To date, most fundamental components [20][21][22][23][24][25][26][27][28] have been demonstrated on the platform to great effect. Recent trend suggests an extension of SiPh from the O/C-band to the 2 µm waveband to enable a wide range of applications [29].…”

Section: Introductionmentioning

confidence: 99%

Compact silicon photonic hybrid ring external cavity (SHREC)/InGaSb-AlGaAsSb wavelength-tunable laser diode operating from 1881-1947 nm

Sia

Wang

et al. 2020

Opt. Express

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In recent years, the 2 µm waveband has been gaining significant attention due to its potential in the realization of several key technologies, specifically, future long-haul optical communications near the 1.9 µm wavelength region. In this work, we present a hybrid silicon photonic wavelength-tunable diode laser with an operating range of 1881-1947 nm (66 nm) for the first time, providing good compatibility with the hollow-core photonic bandgap fiber and thulium-doped fiber amplifier. Room-temperature continuous-wave operation was achieved with a favorable on-chip output power of 28 mW. Stable single-mode lasing was observed with side-mode suppression ratio up to 35 dB. Besides the abovementioned potential applications, the demonstrated wavelength region will find critical purpose in H 2 O spectroscopic sensing, optical logic, signal processing as well as enabling the strong optical Kerr effect on Si.

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A 128 Gb/s PAM4 Silicon Microring Modulator With Integrated Thermo-Optic Resonance Tuning

Cited by 195 publications

References 16 publications

Digital Electronics and Analog Photonics for Convolutional Neural Networks (DEAP-CNNs)

Digital Electronics and Analog Photonics for Convolutional Neural Networks (DEAP-CNNs)

Design Considerations for Energy Efficient DWDM PAM4 Transceivers Employing Avalanche Photodiodes

Compact silicon photonic hybrid ring external cavity (SHREC)/InGaSb-AlGaAsSb wavelength-tunable laser diode operating from 1881-1947 nm

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