San Jose, 13 October 2026. Lumentum Holdings Inc of San Jose, CA, USA, Astera Labs Inc and Corning Inc are giving a joint demonstration of PCIe-over-optics connectivity for AI rack-scale architectures in Astera Labs' booth #B34 at the 2026 Open Compute Project (OCP) Global Summit at the San Jose McEnery Convention Center (12-15 October).
The rack-level demonstration combines an Astera Labs Scorpio Smart Fabric Switch with Lumentum's 1060nm vertical-cavity surface-emitting laser (VCSEL)-based optical interconnect platform and Corning multi-mode fiber connectivity. The optical interconnect uses high-density 1060nm VCSEL and photodetector arrays implemented with advanced packaging, including two-dimensional arrays with backside lens technology.
The proof-of-concept system is designed to demonstrate multiple 32Gb/s NRZ optical channels over Corning multi-mode fiber and an error-free PCIe-5 link.
"AI infrastructure is pushing optical connectivity closer to the compute system where reach, density and power represent significant challenges," says Lumentum's chief technology officer Matt Sysak. "This demonstration with Astera Labs and Corning shows how Lumentum's 1060nm VCSEL platform can extend PCIe connectivity and unlock a whole new class of functionality," he adds.
Source: Semiconductor Today
Researchers at Science Tokyo have shown that the circular photogalvanic effect in two-dimensional organic-inorganic hybrid perovskites arises from the crystal bulk rather than its surface. Using circularly polarized light at normal incidence, they found helicity-dependent photocurrents that reversed with light handedness and with crystal polarity in chiral enantiomers. The lead iodide layers provide strong spin-orbit coupling while molecular cations set bulk polarity.
Researchers at the Max Planck Institute for the Science of Light and Leibniz University Hannover have achieved strong coupling between light and long-lived acoustic vibrations in an optical fiber for the first time, using stimulated Brillouin scattering at 4 K without any optical or mechanical resonator. A measurable gap in the spectral response confirms the effect, which typically appears only in cavity systems.
EMode Photonix has raised a $1 million pre-seed round led by Ground State Ventures, with participation from Harlow Capital Management. The company's simulation stack speeds up non-linear photonic circuit simulation by 1,000x.
