50 citations · 107 across the 12 of their papers we have counts for
5 papers · 1 filter
Highly-efficient fiber to Si-waveguide free-form coupler for foundry-scale silicon photonics
Luigi Ranno, Jia Xu Brian Sia, Cosmin Popescu +7
As silicon photonics transitions from research to commercial deployment, packaging solutions that efficiently couple light into highly-compact and functional sub-micron silicon wav…
Electrically reconfigurable phase-change transmissive metasurface
Cosmin Constantin Popescu, Kiumars Aryana, Parth Garud +12
Programmable and reconfigurable optics hold significant potential for transforming a broad spectrum of applications, spanning space explorations to biomedical imaging, gas sensing,…
An Open-Source Multi-functional Testing Platform for Optical Phase Change Materials
Cosmin-Constantin Popescu, Khoi Phuong Dao, Luigi Ranno +18
Owing to their unique tunable optical properties, chalcogenide phase change materials are increasingly being investigated for optics and photonics applications. However, in situ ch…
Nonvolatile Tuning of Bragg Structures Using Transparent Phase-Change Materials
Nicholas A. Nobile, Chuanyu Lian, Hongyi Sun +7
Bragg gratings offer high-performance filtering and routing of light on-chip through a periodic modulation of a waveguide's effective refractive index. Here, we model and experimen…
Toward accurate thermal modeling of phase change material based photonic devices
Kiumars Aryana, Hyun Jung Kim, Cosmin-Constantin Popescu +5
Reconfigurable or programmable photonic devices are rapidly growing and have become an integral part of many optical systems. The ability to selectively modulate electromagnetic wa…