1.1k citations · 1.5k across the 13 of their papers we have counts for
13 papers
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…
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 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…
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…
Ge Microdisk with Lithographically-Tunable Strain using CMOS-Compatible Process
David S. Sukhdeo, Jan Petykiewicz, Shashank Gupta +6
We present germanium microdisk optical resonators under a large biaxial tensile strain using a CMOS-compatible fabrication process. Biaxial tensile strain of ~0.7% is achieved by m…
Direct Bandgap Light Emission from Strained Ge Nanowires Coupled with High-Q Optical Cavities
Jan Petykiewicz, Donguk Nam, David S. Sukhdeo +5
A silicon-compatible light source is the final missing piece for completing high-speed, low-power on-chip optical interconnects. In this paper, we present a germanium-based light e…