Router-in-a-Package Design Combining HBM4, Chiplets and In-Package Optics (Technion, Berkeley, UCSD)


A new technical paper "Scaling Routers with In-Package Optics and High-Bandwidth Memories" was posted by researchers at Technion, UC Berkeley and UC San Diego. Abstract "This paper aims to apply two major scaling transformations from the computing packaging industry to internet routers: the heterogeneous integration of high-bandwidth memories (HBMs) and chiplets, as well as in-package optic... » read more

One-on-One With proteanTecs CEO Shai Cohen


The acceleration of technology is unprecedented: AI data centers, edge build-out, robotics, photonics, quantum, multi-die assemblies. Semiconductor Engineering Editor in Chief Ed Sperling talks with proteanTecs CEO Shai Cohen about what's changing and what impact it will have. Click here to listen. » read more

Less Power and Higher Performance With A Nanolaser With Extreme Dielectric Confinement (DTU)


A new technical paper titled "A nanolaser with extreme dielectric confinement" was published by researchers at Technical University of Denmark (DTU). Abstract "The interaction between light and matter can be enhanced by spatially concentrating the light field and extending photon dwell time. Plasmonic structures can provide strong light confinement but suffer from ohmic losses. Recent adv... » read more

IMC: Free-Space Optical Neural Network With High Clockrate (Berkeley, USC, TU Berlin)


A new technical paper titled "High-clockrate free-space optical in-memory computing" was published by researchers at UC Berkeley, USC,  and TU Berlin. Abstract "The ability to process and act on data in real time is increasingly critical for applications ranging from autonomous vehicles, three-dimensional environmental sensing, and remote robotics. However, the deployment of deep neural ... » read more

Comprehensive System-Level Performance Model For p-SRAM-Based IMC (USC, UW-Madison)


Researchers at USC and University of Wisconsin-Madison published "System-Level Performance Modeling of Photonic In-Memory Computing." Abstract "Photonic in-memory computing is a high-speed, low-energy alternative to traditional transistor-based digital computing that utilizes high photonic operating frequencies and bandwidths. In this work, we develop a comprehensive system-level performa... » read more

Overview and Comparison of Devices Used For Optical Waveguide-to-Waveguide Coupling (MIT et al.)


A new technical paper titled "Advances in waveguide to waveguide couplers for 3D integrated photonic packaging" was published by researchers at MIT and Bridgewater State University. Abstract "In this paper, we provide an overview and comparison of devices used for optical waveguide-to-waveguide coupling including inter-chip edge couplers, grating couplers, free form couplers, evanescent cou... » read more

Ultralow-Loss PIC Platform From Violet to Near-Infrared, CMOS-Foundry Compatible (Caltech, UCSB et al.)


A new technical paper titled "Towards fibre-like loss for photonic integration from violet to near-infrared" was published by researchers at Caltech, UCSB, Leiden University and University of Southampton. Abstract excerpt: "Here we present an ultralow-loss PIC platform based on germano-silicate—the material underlying the extraordinary performance of optical fibre—but realized by a fu... » read more

Research Bits: Dec. 22


Photonic memory Researchers from the University of Southern California Information Sciences Institute and the University of Wisconsin-Madison fabricated a regenerative photonic latch memory on GlobalFoundries’ commercial silicon photonics platform, a step towards building a complete photonic SRAM system. The memory cell can store data as light and regenerate the signal to keep it stable a... » read more

Photonic Chip With A 2D Programmable Waveguide (Boston U., UC Irvine, Yale)


A new technical paper titled "Arbitrary control over multimode wave propagation for machine learning" was published by researchers at Boston University, UC Irvine, and Yale University. Abstract "Controlled multimode wave propagation can enable more space-efficient photonic processors than architectures based on discrete components connected by single-mode waveguides. Instead of defining d... » read more

Challenges In Testing Photonics In Chips


The semiconductor industry has spent decades improving reliability and consistency by standardizing when and how to test it, how to collect critical data from those tests, and what to do with that data. But electrical test data is very different from silicon photonics, which is being bundled into these SoCs and multi-die assemblies alongside traditional electrical components. Aftkhar Aslam, CEO... » read more

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