Publications by authors named "SE Ralph"

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U
Unifying and accelerating level-set and density-based topology optimization by subpixel-smoothed projection.
Alec M Hammond, Ardavan Oskooi, Ian M Hammond, Mo Chen, Stephen E Ralph

Opt Express· August 2025

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Fabrication tolerant multi-layer integrated photonic topology optimization.
Michael J Probst, Arjun Khurana, Joel B Slaby, Alec M Hammond, Stephen E Ralph

Opt Express· August 2024

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Multi-layer inverse design of vertical grating couplers for high-density, commercial foundry interconnects.
Alec M Hammond, Joel B Slaby, Michael J Probst, Stephen E Ralph

Opt Express· August 2022

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Constellation-based identification of linear and nonlinear OSNR using machine learning: a study of link-agnostic performance.
Hyung Joon Cho, Daniel Lippiatt, Varghese A Thomas, Siddharth Varughese, Steven Searcy, Stephen E Ralph

Opt Express· January 2022

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High-performance hybrid time/frequency-domain topology optimization for large-scale photonics inverse design.
Alec M Hammond, Ardavan Oskooi, Mo Chen, Zin Lin, Steven G Johnson, Stephen E Ralph

Opt Express· January 2022

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Photonic topology optimization with semiconductor-foundry design-rule constraints.
Alec M Hammond, Ardavan Oskooi, Steven G Johnson, Stephen E Ralph

Opt Express· July 2021

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Optical performance monitoring using digital coherent receivers and convolutional neural networks.
Hyung Joon Cho, Siddharth Varughese, Daniel Lippiatt, Richard Desalvo, Sorin Tibuleac, Stephen E Ralph

Opt Express· October 2020

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Advanced signaling technologies for high-speed digital fiber-optic links.
Andrew J Stark, Pierre Isautier, Jie Pan, Sriharsha Kota Pavan, Mark Filer, Stephen E Ralph

Appl Opt· September 2014

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Joint digital signal processing for superchannel coherent optical communication systems.
Cheng Liu, Jie Pan, Thomas Detwiler, Andrew Stark, Yu-Ting Hsueh, Stephen E Ralph

Opt Express· April 2013

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Efficient photoconductive terahertz source using line excitation.
Joong H Kim, Arup Polley, Stephen E Ralph

Opt Lett· September 2005

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S
Self-guiding multimode interference threshold switch.
J S Rodgers, S E Ralph, R P Kenan

Opt Lett· December 2000

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Transform-limited spectral compression due to self-phase modulation in fibers.
B R Washburn, J A Buck, S E Ralph

Opt Lett· April 2000

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Two-photon absorption-induced self-phase modulation in GaAs-AlGaAs waveguides for surface-emitted second-harmonic generation.
T G Ulmer, R K Tan, Z Zhou, S E Ralph, R P Kenan

Opt Lett· June 1999

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S
Subpicosecond photoconductivity of In0.53Ga0.47As: Intervalley scattering rates observed via THz spectroscopy.
SE Ralph, Y Chen, J Woodall, D McInturff

Phys Rev B Condens Matter· August 1996

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Field-induced nonequilibrium carrier distributions in GaAs probed by electronic Raman scattering.
SE Ralph, GJ Wolga

Phys Rev B Condens Matter· July 1990

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New photorefractive effect in graded-gap superlattices.
SE Ralph, F Capasso, RJ Malik

Phys Rev Lett· November 1989

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