Journal ArticleDOI
A Monolithically Integrated Large-Scale Optical Phased Array in Silicon-on-Insulator CMOS
TLDR
A large-scale monolithic silicon nanophotonic phased array on a chip creates and dynamically steers a high-resolution optical beam in free space, enabling emerging applications in sensing, imaging, and communication.Abstract:
A large-scale monolithic silicon nanophotonic phased array on a chip creates and dynamically steers a high-resolution optical beam in free space, enabling emerging applications in sensing, imaging, and communication. The scalable architecture leverages sub-array structure, mitigating the impact of process variation on the phased array performance. In addition, sharing control electronics among multiple optical modulators in the scalable architecture reduces the number of digital-to-analog converters (DACs) required for an $N^{2}$ array from $\mathcal {O}(N^{2})$ to $\mathcal {O}(N)$ , allowing a small silicon footprint. An optical phased array for 1550-nm wavelength with 1024 uniformly spaced optical grating antennas, 1192 optical variable phase shifters, and 168 optical variable attenuators is integrated into a 5.7 mm $\times$ 6.4 mm chip in a commercial 180-nm silicon-on-insulator RF CMOS technology. The control signals for the optical variable phase shifters and attenuators are provided by 136 DACs with 14-bit nonuniform resolution using 2.5-V input-output transistors. The implemented phased array can create 0.03° narrow optical beams that can be steered unambiguously within ±22.5°.read more
Citations
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Journal ArticleDOI
Long-Range LiDAR and Free-Space Data Communication With High-Performance Optical Phased Arrays
Christopher V. Poulton,Matthew J. Byrd,Peter Russo,Erman Timurdogan,Murshed Khandaker,Diedrik Vermeulen,Michael R. Watts +6 more
TL;DR: In this paper, high-performance integrated optical phased arrays along with first-of-their-kind light detection and ranging (LiDAR) and free-space data communication demonstrators are presented.
Journal ArticleDOI
Large-Scale Optical Neural Networks Based on Photoelectric Multiplication
TL;DR: Simulations of the network using models for digit- and image-classification reveal a "standard quantum limit" for optical neural networks, set by photodetector shot noise, which suggests performance below the thermodynamic limit for digital irreversible computation is theoretically possible in this device.
Journal ArticleDOI
Large-scale optical phased array using a low-power multi-pass silicon photonic platform
Steven A. Miller,You-Chia Chang,Christopher T. Phare,Min Chul Shin,Moshe Zadka,Samantha P. Roberts,Brian Stern,Xingchen Ji,Aseema Mohanty,Oscar A. Jimenez Gordillo,Utsav D. Dave,Michal Lipson +11 more
TL;DR: In this paper, a multi-pass photonic platform is integrated into a large-scale phased array that reduces phase shifter power consumption by nearly 9 times, without sacrificing speed or optical bandwidth.
Journal ArticleDOI
Hybrid integration methods for on-chip quantum photonics
TL;DR: In this paper, the authors review recent advances in integrated quantum photonics based on such hybrid systems and discuss the remaining challenges and future prospects of on-chip quantum photonic with integrated quantum emitters.
Journal ArticleDOI
Monolithic silicon-photonic platforms in state-of-the-art CMOS SOI processes [Invited]
Vladimir Stojanovic,Rajeev J. Ram,Milos A. Popovic,Sen Lin,Sajjad Moazeni,Mark T. Wade,Chen Sun,Luca Alloatti,Amir H. Atabaki,Fabio Pavanello,Nandish Mehta,Pavan Bhargava +11 more
TL;DR: The results indicate that the 45 nm and 32 nm processes provide a "sweet-spot" for adding photonic capability and enhancing integrated system applications beyond the Moore-scaling, while being able to offload major communication tasks from more deeply-scaled compute and memory chips without complicated 3D integration approaches.
References
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Journal ArticleDOI
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