Stephen E. Ralph

Publication Activity (10 Years)

Years Active: 2004-2022
Publications (10 Years): 34

Top Topics

Top Venues

Publications

Daniel Lippiatt, Hyung Joon Cho, Alex Kaylor, Varghese A. Thomas, Steven Searcy, Thomas Richter, Sorin Tibuleac, Stephen E. Ralph
Optical Performance Monitoring for Commercial Transceivers using Constellations: Practical Considerations. OFC (2022)
Alirio Melgar, Varghese A. Thomas, Benjamin D. B. Klein, Itshak Kalifa, Paraskevas Bakopoulos, Elad Mentovich, Stephen E. Ralph
Behavioral PAM-4 VCSEL Model using Stochastic Multimode Rate Equations for Link Design Optimization. OFC (2022)
Alec M. Hammond, Joel Slaby, Gareeyasee Saha, Stephen E. Ralph
Robust Topology Optimization for Foundry-Photonics Inverse Design: Examining Compact and Arbitrary Power Splitters. ECOC (2021)
Gareeyasee Saha, Stephen E. Ralph
Widely Tunable Apodized Bragg Grating Filter Fabricated in a Silicon Photonic Foundry. OFC (2021)
Alec M. Hammond, Stephen E. Ralph
System-Level Inverse Design for Stokes Receivers on a Commercial Foundry Platform. OFC (2021)
Daniel Lippiatt, Alirio Melgar, Varghese A. Thomas, Siddharth Varughese, Pavel Zivny, Shane A. Hazzard, Stephen E. Ralph
Impairment Identification for PAM-4 Transceivers and Links Using Machine Learning. OFC (2021)
Christian G. Bottenfield, Michael T. Hoff, Varghese A. Thomas, Ardy Winoto, Yuchun Zhou, Ashish Bhardwaj, Gloria E. Hoefler, Richard DeSalvo, Stephen E. Ralph
High Performance Microwave Photonic Downconversion in a Commercial InP Platform. OFC (2021)
Michael T. Hoff, Christian G. Bottenfield, Varghese A. Thomas, Ardy Winoto, Yuchun Zhou, Ashish Bhardwaj, Gloria E. Hoefler, Stephen E. Ralph
Self-Homodyne Photonic Transmitter in a Monolithic InP Platform for RF Applications. OFC (2021)
Justin Lavrencik, Siddharth Varughese, Nikolay Ledentsov Jr., Lukasz Chorchos, Nikolay N. Ledentsov, Stephen E. Ralph
168Gbps PAM-4 Multimode Fiber Transmission through 50m using 28GHz 850nm Multimode VCSELs. OFC (2020)
Siddharth Varughese, Daniel Lippiatt, Thomas Richter, Sorin Tibuleac, Stephen E. Ralph
Low Complexity Soft Failure Detection and Identification in Optical Links using Adaptive Filter Coefficients. OFC (2020)
Saeed Zeinolabedinzadeh, Patrick Goley, Milad Frounchi, Sunil G. Rao, Christian G. Bottenfield, Gareeyasee Saha, Andy Stark, Stephen E. Ralph, Mehmet Kaynak, Lars Zimmermann, Stefan Lischke, Christian Mai, John D. Cressler
A Co-Integrated Silicon-Based Electronic-Photonic Wideband, High-Power Signal Source. OFC (2020)
Jerrod S. Langston, Richard DeSalvo, Stephen E. Ralph
Spectrum Sensing Applications of FWM-Based Optical Cyclostationary Processor. OFC (2020)
Nikolay N. Ledentsov, V. A. Shchukin, V. P. Kalosha, Nikolay Ledentsov Jr., Lukasz Chorchos, Jaroslaw P. Turkiewicz, Urs Hecht, Patrick Kurth, Friedel Gerfers, Justin Lavrencik, Siddharth Varughese, Stephen E. Ralph
Optical Interconnects using Single-Mode and Multi-Mode VCSEL and Multi-Mode Fiber. OFC (2020)
Hyung Joon Cho, Siddharth Varughese, Daniel Lippiatt, Stephen E. Ralph
Convolutional Recurrent Machine Learning for OSNR and Launch Power Estimation: A Critical Assessment. OFC (2020)
Varghese A. Thomas, Alirio Melgar, Siddharth J. Varughese, Daniel Garon, Kan Tan, Shane A. Hazzard, Maria Agoston, Pavel Zivny, Stephen E. Ralph
TDECQ Sensitivity to Algorithmic Implementation and Noise Characterization. OFC (2020)
Siddharth Varughese, Daniel A. Garon, Alirio Melgar, Varghese A. Thomas, Pavel Zivny, Shane A. Hazzard, Stephen E. Ralph
Accelerating TDECQ Assessments using Convolutional Neural Networks. OFC (2020)
Daniel Lippiatt, Siddharth Varughese, Thomas Richter, Sorin Tibuleac, Stephen E. Ralph
Joint Linear and Nonlinear Noise Estimation of Optical Links by Exploiting Carrier Phase Recovery. OFC (2020)
Stephen E. Ralph, Justin Lavrencik
High Capacity VCSEL Links. OFC (2019)
Christian G. Bottenfield, Varghese A. Thomas, Stephen E. Ralph
Microwave Photonic Links: Optimizing SiP Modulator Design and Operation. OFC (2019)
Justin Lavrencik, Ewa Simpanen, Siddharth Varughese, Alirio Melgar, Varghese A. Thomas, Johan S. Gustavsson, Wayne V. Sorin, Sagi Mathai, Mike Tan, Anders Larsson, Stephen E. Ralph
Error-Free 100Gbps PAM-4 Transmission Over 100m OM5 MMF using 1060nm VCSELs. OFC (2019)
Siddharth Varughese, Daniel Lippiatt, Thomas Richter, Sorin Tibuleac, Stephen E. Ralph
Identification of Soft Failures in Optical Links using Low Complexity Anomaly Detection. OFC (2019)
Nasibeh Haghighi, Justin Lavrencik, Stephen E. Ralph, James A. Lott
55 Gbps error free data transmission with 980 nm VCSELs across 100 m of multiple-mode optical fiber. OECC/PSC (2019)
Alirio Melgar, Varghese A. Thomas, Stephen E. Ralph
Multimode VCSEL Parameter Extraction for Optical Link Models. ECOC (2018)
Justin Lavrencik, Siddharth Varughese, Johan S. Gustavsson, Erik Haglund, Anders Larsson, Stephen E. Ralph
Power Efficient Modulation Formats for Error-Free VeSEL MMF Links. ECOC (2018)
Alirio Melgar, Varghese A. Thomas, Justin Lavrencik, Stephen E. Ralph
Parameter Extraction through Joint Optimization of Modulation Response and RIN Spectra. OFC (2018)
Jerrod S. Langston, Siddharth Varughese, Richard DeSalvo, Stephen E. Ralph
Blind Cyclostationarity-Based Format Classification for Coherent Links. ECOC (2018)
Justin Lavrencik, Johan S. Gustavsson, Erik Haglund, Anders Larsson, Stephen E. Ralph
Optimum VCSEL Apertures for High-Speed Multimode Fiber Links. OFC (2018)
Justin Lavrencik, Siddharth Varughese, Johan S. Gustavsson, Erik Haglund, Anders Larsson, Stephen E. Ralph
Error-Free 100Gbps PAM-4 Transmission over 100m Wideband Fiber using 850nm VCSELs. ECOC (2017)
Justin Lavrencik, Siddharth Varughese, Varghese A. Thomas, Gary Landry, Yi Sun, Roman Shubochkin, Kasyapa Balemarthy, Jim Tatum, Stephen E. Ralph
4λ × 100Gbps VCSEL PAM-4 transmission over 105m of wide band multimode fiber. OFC (2017)
Alirio A. Melgar-Evangelista, Varghese A. Thomas, Justin Lavrencik, Siddharth Varughese, Stephen E. Ralph
Experimentally benchmarked fiber propagation model for 50Gbps PAM-4 MMF links employing multimode VCSELs. OFC (2017)
Siddharth Varughese, Justin Lavrencik, Johan S. Gustavsson, Erik Haglund, Anders Larsson, Stephen E. Ralph
Polybinary Coding for Low Complexity High Speed Error-Free VCSEL-MMF Links. ECOC (2017)
Stephen E. Ralph
Requirements and results for practical VCSEL transmission using PAM-4 over MMF. OFC (2016)
Stuart Hughes, Jerrod S. Langston, Richard DeSalvo, Charles Middleton, Elliott Grafer, Stephen E. Ralph, Andrew J. Stark
Agile micro- and millimeter-wave communication using photonic frequency conversion. OFC (2016)
Justin Lavrencik, Sriharsha Kota Pavan, Alirio Melgar, Stephen E. Ralph
Direct measurement of transverse mode correlation and fiber-enhanced RIN through MMF using 850nm VCSELs. OFC (2016)
Pierre Isautier, Kedar Mehta, Andrew J. Stark, Stephen E. Ralph
Robust Architecture for Autonomous Coherent Optical Receivers. JOCN 7 (9) (2015)
Pierre Isautier, Jie Pan, Stephen E. Ralph
Autonomous receiver architecture for multi-gigabit photonic assisted RF signals. ECOC (2015)
Stuart Hughes, Jie Pan, Jerrod S. Langston, Pierre Isautier, Hari Shankar, Stephen E. Ralph
Linearity requirements of QAM transmitters. OFC (2015)
Jie Pan, Pierre Isautier, Mark Filer, Sorin Tibuleac, Stephen E. Ralph
Addition of in-band crosstalk to the Gaussian noise model. OFC (2015)
Justin Lavrencik, Sriharsha Kota Pavan, David K. Haupt, Stephen E. Ralph
Direct measurement of transverse mode correlation and MPN using 900nm VCSELs. OFC (2015)
Pierre Isautier, Jerrod S. Langston, Jie Pan, Stephen E. Ralph
Agnostic software-defined coherent optical receiver performing time-domain hybrid modulation format recognition. OFC (2015)
Sriharsha Kota Pavan, Justin Lavrencik, Stephen E. Ralph
Experimental demonstration of 51.56 Gbit/s PAM-4 at 905nm and impact of level dependent RIN. ECOC (2014)
Jie Pan, Pierre Isautier, Mark Filer, Sorin Tibuleac, Stephen E. Ralph
Gaussian noise model aided in-band crosstalk analysis in ROADM-enabled DWDM networks. OFC (2014)
Pierre Isautier, Jie Pan, Stephen E. Ralph
Robust autonomous software-defined coherent optical receiver. OFC (2014)
Sriharsha Kota Pavan, Justin Lavrencik, Roman Shubochkin, Yi Sun, Jinkee Kim, Durgesh Vaidya, Robert Lingle, Tomofumi Kise, Stephen E. Ralph
50Gbit/s PAM-4 MMF transmission using 1060nm VCSELs with reach beyond 200m. OFC (2014)
Jie Pan, Andrew Stark, Cheng Liu, Stephen E. Ralph
Fractionally-spaced frequency domain linear crosstalk cancellation with spectral alignment techniques for coherent superchannel optical systems. OFC/NFOEC (2013)
Pierre Isautier, Andrew J. Stark, Kedar Mehta, Richard DeSalvo, Stephen E. Ralph
Autonomous software-defined coherent optical receivers. OFC/NFOEC (2013)
Cheng Liu, Jie Pan, Thomas Detwiler, Andrew Stark, Yu-Ting Hsueh, Gee-Kung Chang, Stephen E. Ralph
Joint ICI cancellation for superchannel coherent optical systems in nonlinear transmission regimes. OFC/NFOEC (2013)
Saurav Bandyopadhyay, Pradip Mandal, Stephen E. Ralph, Kenneth Pedrotti
Integrated TIA-Equalizer for High Speed Optical Link. VLSI Design (2008)
Dae-Ik Kim, Mikkel A. Thomas, Jeffrey J. Lillie, Karla S. Dennis, Benita M. Comeau, Martin A. Brooke, Nan M. Jokerst, Stephen E. Ralph, Clifford L. Henderson
Integrated mixed-signal optoelectronic system-on-a-chip sensor. ISCAS (2) (2005)
Cattalen Pelard, Edward Gebara, Andrew J. Kim, Michael G. Vrazel, Franklin Bien, Youngsik Hur, Moonkyun Maeng, Soumya Chandramouli, Carl Chun, Sanjay Bajekal, Stephen E. Ralph, Bruce Schmukler, Vincent M. Hietala, Joy Laskar
Realization of multigigabit channel equalization and crosstalk cancellation integrated circuits. IEEE J. Solid State Circuits 39 (10) (2004)