Publications (16)
Fully-automated optimization of grating couplers
Logan Su, Rahul Trivedi, Neil V. Sapra +3
We present a gradient-based algorithm to design general 1D grating couplers without any human input from start to finish, including a choice of initial condition. We show that we c…
Fabrication-constrained nanophotonic inverse design
Alexander Y. Piggott, Jan Petykiewicz, Logan Su +1
A major difficulty in applying computational design methods to nanophotonic devices is ensuring that the resulting designs are fabricable. Here, we describe a general inverse desig…
Data-driven acceleration of Photonic Simulations
Rahul Trivedi, Logan Su, Jesse Lu +2
Designing modern photonic devices often involves traversing a large parameter space via an optimization procedure, gradient based or otherwise, and typically results in the designe…
Simulation of large-area metasurfaces with a distributed transition matrix method
Jinhie Skarda, Rahul Trivedi, Logan Su +5
Inverse design of large-area metasurfaces can potentially exploit the full parameter space that such devices offer and achieve highly efficient multifunctional flat optical element…
On the fundamental limitations of imaging with evanescent waves
Alexander Y. Piggott, Logan Su, Jan Petykiewicz +1
There has been significant interest in imaging and focusing schemes that use evanescent waves to beat the diffraction limit, such as those employing negative refractive index mater…
Inverse-Designed Diamond Photonics
Constantin Dory, Dries Vercruysse, Ki Youl Yang +10
Diamond hosts optically active color centers with great promise in quantum computation, networking, and sensing. Realization of such applications is contingent upon the integration…
Inverse design and demonstration of a compact on-chip narrowband three-channel wavelength demultiplexer
Logan Su, Alexander Y. Piggott, Neil V. Sapra +2
In wavelength division multiplexing (WDM) schemes, splitters must be used to combine and separate different wavelengths. Conventional splitters are fairly large with footprints in…
Universal visible emitters in nanoscale integrated photonics
Grisha Spektor, David Carlson, Zach Newman +8
Visible wavelengths of light control the quantum matter of atoms and molecules and are foundational for quantum technologies, including computers, sensors, and clocks. The developm…
Augmenting On-Chip Microresonator through Photonic Inverse Design
Geun Ho Ahn, Ki Youl Yang, Rahul Trivedi +4
Recent advances in the design and fabrication of on-chip optical microresonators has greatly expanded their applications in photonics, enabling metrology, communications, and on-ch…
On-chip integrated laser-driven particle accelerator
Neil V. Sapra, Ki Youl Yang, Dries Vercruysse +8
Particle accelerators represent an indispensable tool in science and industry. However, the size and cost of conventional radio-frequency accelerators limit the utility and reach o…
Gradient-Based Optimization of Optical Vortex Beam Emitters
Alexander D. White, Logan Su, Daniel I. Shahar +5
Vortex beams are stable solutions of Maxwell's equations that carry phase singularities and orbital angular momentum, unique properties that give rise to many applications in the b…
Inverse design and demonstration of broadband grating couplers
Neil V. Sapra, Dries Vercruysse, Logan Su +4
We present a gradient-based optimization strategy to design broadband grating couplers. Using this method, we are able to reach, and often surpass, a user-specified target bandwidt…
Inverse-designed photonics for semiconductor foundries
Alexander Y. Piggott, Eric Y. Ma, Logan Su +7
Silicon photonics is becoming a leading technology in photonics, displacing traditional fiber optic transceivers in long-haul and intra-data-center links and enabling new applicati…
Fundamental bounds for scattering from absorptionless electromagnetic structures
Rahul Trivedi, Guillermo Angeris, Logan Su +3
The ability to design the scattering properties of electromagnetic structures is of fundamental interest in optical science and engineering. While there has been great practical su…
Nanophotonic Inverse Design with SPINS: Software Architecture and Practical Considerations
Logan Su, Dries Vercruysse, Jinhie Skarda +3
A computational nanophotonic design library for gradient-based optimization called SPINS is presented. Borrowing the concept of computational graphs, SPINS is a design framework th…
Inverse-designed multi-dimensional silicon photonic transmitters
Ki Youl Yang, Alexander D. White, Farshid Ashtiani +33
Modern microelectronic processors have migrated towards parallel computing architectures with many-core processors. However, such expansion comes with diminishing returns exacted b…