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Chip Sandwich: Electronics Chip & Photonics Chip Co-Optimized To Work Together (CalTech/Univ. of Southampton)


A technical paper titled "A 100-Gb/s PAM4 Optical Transmitter in a 3-D-Integrated SiPh-CMOS Platform Using Segmented MOSCAP Modulators" was published by researchers at CalTech and University of Southampton. "The resulting optimized interface between the two chips allows them to transmit 100 gigabits of data per second while producing just 2.4 pico-Joules per transmitted bit. This improves th... » read more

Wafer-Scale Variability In Photonic Devices & Effects On Circuits


A technical paper titled "Capturing the Effects of Spatial Process Variations in Silicon Photonic Circuits" was published by researchers at Photonics Research Group, Ghent University−IMEC. "We present in this paper a method to extract a granular map of the line width and thickness variation on a silicon photonics wafer. We propose a hierarchical model to separate the layout-dependent and l... » read more

Scalable Optical AI Accelerator Based on a Crossbar Architecture


A new technical paper titled "Scalable Coherent Optical Crossbar Architecture using PCM for AI Acceleration" was published by researchers at University of Washington. Abstract: "Optical computing has been recently proposed as a new compute paradigm to meet the demands of future AI/ML workloads in datacenters and supercomputers. However, proposed implementations so far suffer from lack of sc... » read more

Modeling Silicon Photonics Process Parameter Variations In Synopsys OptoCompiler-OptSim


Silicon photonics (SiPh) refers to the enablement of photonic integrated circuits (PIC) over silicon wafer. SiPh enables compatibility with existing CMOS manufacturing infrastructure for large-scale integration and brings the associated benefits to the photonics, namely, lower footprint, lower thermal effects, and co-packaging of electronics and photonics on the same chip. One of the side-effec... » read more

Using Silicon Photonics To Reduce Latency On Edge Devices


A new technical paper titled "Delocalized photonic deep learning on the internet’s edge" was published by researchers at MIT and Nokia Corporation. “Every time you want to run a neural network, you have to run the program, and how fast you can run the program depends on how fast you can pipe the program in from memory. Our pipe is massive — it corresponds to sending a full feature-leng... » read more

Two Chip-Scale Photonic Systems For Optical Data Transmission & Microwave Photonics


New research paper "Microcomb-driven silicon photonic systems" from Peking University, UCSB, and Peng Cheng Laboratory. Abstract "Microcombs have sparked a surge of applications over the past decade, ranging from optical communications to metrology. Despite their diverse deployment, most microcomb-based systems rely on a large amount of bulky elements and equipment to fulfil their desir... » read more

Week In Review: Manufacturing, Test


Photonic Chips Go Big In Europe PhotonDelta, a collaborative end-to-end supply chain for the application of photonics chips, secured €1.1 billion in conditional funding for a six-year initiative. Investments from the Netherlands government and other organizations “will be used to build 200 startups, scale up production, create new applications for photonic chips, and develop infrastructure... » read more

Graphene oxide 2D films integrated with nanowires and ring resonators for enhanced nonlinear optics


New research paper from Optical Sciences Centre, Swinburne University of Technology. Abstract "We report enhanced nonlinear optics in nanowires, waveguides, and ring resonators by introducing layered two-dimensional (2D) graphene oxide (GO) films through experimental demonstration. The GO films are integrated on silicon-on-insulator nanowires (SOI), high index doped silica glass, and sili... » read more

Quantum well interband semiconductor lasers highly tolerant to dislocations


Abstract "III-V semiconductor lasers integrated on Si-based photonic platforms are eagerly awaited by the industry for mass-scale applications, from interconnect to on-chip sensing. The current understanding is that only quantum dot lasers can reasonably operate at the high dislocation densities generated by the III-V-on-Si heteroepitaxy, which induces high non-radiative carrier recombination ... » read more

Analyzing Electro-Photonic Systems


The design and analysis of electro-optical systems is pushing tools into the complex multi-physics domain, making it challenging to create models that execute at reasonable cost — especially when they include thermal impacts. The lack of models and standards also is slowing the progression of the technology. Still the advantages are worth it to those willing to make the investment. Trad... » read more

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