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ORCIDStephen E. Ralph
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2020 – today
- 2022
[c48]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: 1-3- [c47]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: 1-3 - 2021
- [c46]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: 1-4 - [c45]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: 1-3 - [c44]Alec M. Hammond, Stephen E. Ralph:
System-Level Inverse Design for Stokes Receivers on a Commercial Foundry Platform. OFC 2021: 1-3 - [c43]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: 1-3 - [c42]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: 1-3 - [c41]Gareeyasee Saha, Stephen E. Ralph:
Widely Tunable Apodized Bragg Grating Filter Fabricated in a Silicon Photonic Foundry. OFC 2021: 1-3 - 2020
- [c40]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: 1-3 - [c39]Jerrod S. Langston, Richard DeSalvo, Stephen E. Ralph:
Spectrum Sensing Applications of FWM-Based Optical Cyclostationary Processor. OFC 2020: 1-3 - [c38]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: 1-3 - [c37]Nikolay N. Ledentsov, V. A. Shchukin, Vladimir 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: 1-3 - [c36]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: 1-3 - [c35]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: 1-3 - [c34]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: 1-3 - [c33]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: 1-3 - [c32]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: 1-3
2010 – 2019
- 2019
- [c31]Christian G. Bottenfield, Varghese A. Thomas, Stephen E. Ralph:
Microwave Photonic Links: Optimizing SiP Modulator Design and Operation. OFC 2019: 1-3 - [c30]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: 1-3 - [c29]Stephen E. Ralph, Justin Lavrencik:
High Capacity VCSEL Links. OFC 2019: 1-3 - [c28]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: 1-3 - [c27]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: 1-3 - 2018
- [c26]Jerrod S. Langston, Siddharth Varughese, Richard DeSalvo, Stephen E. Ralph:
Blind Cyclostationarity-Based Format Classification for Coherent Links. ECOC 2018: 1-3 - [c25]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: 1-3 - [c24]Alirio Melgar, Varghese A. Thomas, Stephen E. Ralph:
Multimode VCSEL Parameter Extraction for Optical Link Models. ECOC 2018: 1-3 - [c23]Justin Lavrencik, Johan S. Gustavsson, Erik Haglund, Anders Larsson, Stephen E. Ralph:
Optimum VCSEL Apertures for High-Speed Multimode Fiber Links. OFC 2018: 1-3 - [c22]Alirio Melgar, Varghese A. Thomas, Justin Lavrencik, Stephen E. Ralph:
Parameter Extraction through Joint Optimization of Modulation Response and RIN Spectra. OFC 2018: 1-3 - 2017
- [c21]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: 1-3 - [c20]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: 1-3 - [c19]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: 1-3 - [c18]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: 1-3 - 2016
- [c17]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: 1-3 - [c16]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: 1-3 - [c15]Stephen E. Ralph:
Requirements and results for practical VCSEL transmission using PAM-4 over MMF. OFC 2016: 1-75 - 2015
- [j2]Pierre Isautier, Kedar Mehta, Andrew J. Stark, Stephen E. Ralph:
Robust Architecture for Autonomous Coherent Optical Receivers. JOCN 7(9): 864-874 (2015) - [c14]Pierre Isautier, Jie Pan, Stephen E. Ralph:
Autonomous receiver architecture for multi-gigabit photonic assisted RF signals. ECOC 2015: 1-3 - [c13]Stuart Hughes, Jie Pan, Jerrod S. Langston, Pierre Isautier, Hari Shankar, Stephen E. Ralph:
Linearity requirements of QAM transmitters. OFC 2015: 1-3 - [c12]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: 1-3 - [c11]Justin Lavrencik, Sriharsha Kota Pavan, David K. Haupt, Stephen E. Ralph:
Direct measurement of transverse mode correlation and MPN using 900nm VCSELs. OFC 2015: 1-3 - [c10]Jie Pan, Pierre Isautier, Mark Filer, Sorin Tibuleac, Stephen E. Ralph:
Addition of in-band crosstalk to the Gaussian noise model. OFC 2015: 1-3 - 2014
- [c9]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: 1-3 - [c8]Pierre Isautier, Jie Pan, Stephen E. Ralph:
Robust autonomous software-defined coherent optical receiver. OFC 2014: 1-3 - [c7]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: 1-3 - [c6]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: 1-3 - 2013
- [c5]Pierre Isautier, Andrew J. Stark, Kedar Mehta, Richard DeSalvo, Stephen E. Ralph:
Autonomous software-defined coherent optical receivers. OFC/NFOEC 2013: 1-3 - [c4]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: 1-3 - [c3]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: 1-3
2000 – 2009
- 2008
- [c2]Saurav Bandyopadhyay, Pradip Mandal, Stephen E. Ralph, Kenneth Pedrotti:
Integrated TIA-Equalizer for High Speed Optical Link. VLSI Design 2008: 208-213 - 2005
- [c1]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: 1738-1741 - 2004
- [j1]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): 1659-1670 (2004)
Coauthor Index
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