An integrated photonic engine for programmable atomic control

I Christen, T Propson, M Sutula, H Sattari… - Nature …, 2025‏ - nature.com
Solutions for scalable, high-performance optical control are important for the development of
scaled atom-based quantum technologies. Modulation of many individual optical beams is …

High-performance grating couplers on 220-nm thick silicon by inverse design for perfectly vertical coupling

M Yang, Y Yan, Z Wu, YY Gu, S Zhao, G Morthier… - Scientific Reports, 2023‏ - nature.com
Efficient grating couplers (GCs) for perfectly vertical coupling are difficult to realize due to the
second-order back reflection. In this study, apodized GCs (AGCs) are presented for …

Inverse design of nanophotonic devices enabled by optimization algorithms and deep learning: recent achievements and future prospects

J Kim, JY Kim, J Kim, Y Hyeong, B Neseli, JB You… - …, 2025‏ - degruyter.com
Nanophotonics, which explores significant light–matter interactions at the nanoscale, has
facilitated significant advancements across numerous research fields. A key objective in this …

Adjoint optimization of polarization-splitting grating couplers

P Sun, T Van Vaerenbergh, S Hooten, R Beausoleil - Optics Express, 2023‏ - opg.optica.org
We have designed a polarization-splitting grating coupler (PSGC) in silicon-on-insulator
(SOI) that has 1.2? dB peak loss in numerical simulations, which is the best simulated …

Wafer-level testing of inverse-designed and adjoint-inspired dual layer Si-SiN vertical grating couplers

T Van Vaerenbergh, S Hooten, M Jain… - Journal of Physics …, 2022‏ - iopscience.iop.org
Recently, silicon photonics foundries started providing access to new dielectric stacks which
can be utilized to reduce optical I/O losses. For example, in a hybrid c-Si/SiN platform …

Single-etched fiber-chip coupler with a metal mirror on a 220-nm silicon-on-insulator platform for perfectly vertical coupling

L Wang, J Qiu, Z Dong, Y Chen, L Wu, H Guo, J Wu - Optics Letters, 2024‏ - opg.optica.org
Vertical couplers play a pivotal role as essential components supporting interconnections
between fibers and photonic integrated circuits (PICs). In this study, we propose and …

Realizing highly efficient vertical coupling with dielectric deflective metasurfaces

M **e, B **ong, T Chu - Optics Letters, 2024‏ - opg.optica.org
Using dielectric deflective metasurfaces, we propose a novel, to the best of our knowledge,
out-of-plane modulation scheme to realize vertical coupling on a 220? nm silicon-on …

Automatic differentiation accelerated shape optimization approaches to photonic inverse design on rectilinear simulation grids

S Hooten, P Sun, L Gantz, M Fiorentino… - arxiv preprint arxiv …, 2023‏ - arxiv.org
Shape optimization approaches to inverse design offer low-dimensional, physically-guided
parameterizations of structures by representing them as combinations of shape primitives …

Design and demonstration of high efficiency perfectly vertical grating couplers with a random structure

X **, J Xu, C Xue, C Guo, L Fu, M Liu, Y Shen… - Optics Letters, 2024‏ - opg.optica.org
Utilizing an automated optimization method, we propose a perfectly vertical grating coupler
(PVGC) characterized by random structure, superior performance, simplified fabrication …

Automatic Differentiation Accelerated Shape Optimization Approaches to Photonic Inverse Design in FDFD/FDTD

S Hooten, P Sun, L Gantz, M Fiorentino… - Laser & Photonics …, 2025‏ - Wiley Online Library
Shape optimization approaches to inverse design offer low‐dimensional, physically‐guided
parameterizations of structures by representing them as combinations of primitives …