# Peter J. Pupalaikis
Peter J. Pupalaikis is an American electrical engineer known for digital signal processing (DSP) for test and measurement instruments, in particular the high-bandwidth real-time digital oscilloscopes developed during his 25 years at Teledyne LeCroy. He was a founding member and director of signal integrity (preserving electrical signal quality in high-speed circuits) at Nubis Communications, a maker of data-center optical communications technology, and in 2024 he was elected to the National Academy of Engineering (NAE) for his contributions to digital signal processing for test and measurement instruments.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) He had earlier been named an IEEE Fellow in 2013 for contributions to high-speed waveform digitizing instruments.[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775)
| Key fact | Detail |
|---|---|
| Field | Digital signal processing for measurement instruments; signal integrity for high-speed serial and optical links |
| Education | B.S. in electrical engineering, Rutgers University, 1988[3](https://ece.rutgers.edu/pete-pupalaikis) |
| Main industry roles | Teledyne LeCroy, Vice President of Technology Development, 1995–2020; co-founder and Director of Signal Integrity, Nubis Communications, from 2020[3](https://ece.rutgers.edu/pete-pupalaikis) • [1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) |
| Honours | IEEE Fellow, 2013[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775); National Academy of Engineering, 2024[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) |
| Patents | 29 patents as of 2013;[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775) a self-reported 56 US patents as of 2024, almost all embodied in products[4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis) |
| Best-known publication | *S-Parameters for Signal Integrity* (Cambridge University Press, 2020)[5](https://orcid.org/0000-0001-7725-5165) |
| Most-cited paper | "All-Electronic 100-GHz Bandwidth Digital-to-Analog Converter Generating PAM Signals up to 190 GBaud", *Journal of Lightwave Technology*, 2016 (119 citations per the ORCID-linked record)[5](https://orcid.org/0000-0001-7725-5165) |
## Early life and education
Pupalaikis was born in Boston, Massachusetts in 1964. He received the B.S. degree in electrical engineering from [Rutgers University](https://www.edgepedia.org/rutgers-university) in [New Brunswick, New Jersey](https://www.edgepedia.org/new-brunswick-new-jersey), in 1988.[3](https://ece.rutgers.edu/pete-pupalaikis)
Before joining LeCroy he served in the [United States Army](https://www.edgepedia.org/united-states-army), consulted in embedded system design, and developed instruments at Honeywell Industrial Automation and Controls.[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775)
## Career
**Teledyne LeCroy, 1995–2020.** Pupalaikis spent 25 years at Teledyne LeCroy (formerly LeCroy Corporation), rising to Vice President of Technology Development, where he managed integrated-circuit development, signal processing, and intellectual property.[3](https://ece.rutgers.edu/pete-pupalaikis) • [2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775) The company credited his design efforts and inventions with large increases in the performance of real-time waveform digitizers, leading to what it described as the world's fastest oscilloscopes, instruments used in telecommunications, semiconductor, consumer electronics, automotive, military, and aerospace markets.[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775)
**Nubis Communications, 2020 onward.** He left in 2020 to become one of the co-founders of Nubis Communications, based in Aberdeen, New Jersey, where he holds the role of Director of Signal Integrity.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) • [5](https://orcid.org/0000-0001-7725-5165) In a 2024 interview he described the company as about 45 people and roughly four years old, with core technology in optical communications at data-center reach. His own work there includes writing the company's end-to-end link simulator and handling signal integrity for test boards and testers for sugar-cube-sized high-speed optical modules.[4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis)
## Research and contributions
Pupalaikis summarized his own work to Rutgers as follows: "I pioneered DSP and microwave techniques as applied to high bandwidth real-time digital oscilloscopes."[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) That combination of signal processing and microwave measurement methods runs through his documented output in three areas.
**Oscilloscope DSP.** At LeCroy his signal-processing work raised the performance of real-time waveform digitizers.[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775) This is the contribution for which the NAE elected him, citing digital signal processing for test and measurement instruments.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering)
**Time-domain reflectometry.** His paper "Wavelet Denoising For TDR Dynamic Range Improvement" (2011, 39 citations per the ORCID-linked record) and a book chapter on TDR-based S-parameters (32 citations) address time-domain reflectometry. The wavelet-denoising work targets the dynamic range of TDR measurements; the S-parameter chapter connects time-domain measurements to frequency-domain scattering parameters.[5](https://orcid.org/0000-0001-7725-5165)
**Signal integrity for serial links.** His 2016 *Journal of Lightwave Technology* paper, with co-authors including [Xi Chen](https://www.edgepedia.org/xi-chen), S. Chandrasekhar, and S. Randel, demonstrated an all-electronic 100-GHz-bandwidth [digital-to-analog converter](https://www.edgepedia.org/digital-to-analog-converter) generating PAM signals up to 190 GBaud.[5](https://orcid.org/0000-0001-7725-5165) He also authored a 2017 EDI CON USA paper demonstrating a special probe tip that converts a differential measurement of inductor voltage into a measurement of inductor current, including connection and calibration considerations.[6](https://www.signalintegrityjournal.com/authors/232-peter-j-pupalaikis)
## Key publications
*All-Electronic 100-GHz Bandwidth Digital-to-Analog Converter Generating PAM Signals up to 190 GBaud* (Journal of Lightwave Technology, 2016; doi:10.1109/jlt.2016.2614126). The paper demonstrated a digital-to-analog converter built entirely from electronic components, with 100 GHz of bandwidth, producing pulse-amplitude-modulated signals at symbol rates up to 190 GBaud. It is his most-cited work.[5](https://orcid.org/0000-0001-7725-5165)
*S-Parameters for Signal Integrity* ([Cambridge University Press](https://www.edgepedia.org/cambridge-university-press), 2020; doi:10.1017/9781108784863). He wrote the book with the goal of building a syllabus and teaching courses in signal integrity, a field he described as a niche.[4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis)
*Wavelet Denoising For TDR Dynamic Range Improvement* (2011). This work applied wavelet denoising, a signal-processing technique for separating signal from noise, to improve the dynamic range of time-domain reflectometry measurements. It carries 39 citations in the ORCID-linked record, and a related book chapter, "TDR-based S-parameters", carries 32.[5](https://orcid.org/0000-0001-7725-5165)
A 2007 book chapter in *Modern RF and Microwave Measurement Techniques* (DOI 10.1017/CBO9781139567626.012) is also listed on his ORCID record.[5](https://orcid.org/0000-0001-7725-5165)
## Honours and recognition
In 2024 the National Academy of Engineering announced his election for contributions to digital signal processing for test and measurement instruments.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) In 2013 he was elevated to IEEE Fellow for contributions to high-speed waveform digitizing instruments, a recognition also listed by the IEEE Instrumentation & Measurement Society.[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775) • [7](https://ieee-ims.org/contact/peter-pupalaikis) He is a member of the engineering honor societies [Tau Beta Pi](https://www.edgepedia.org/tau-beta-pi) and [Eta Kappa Nu](https://www.edgepedia.org/eta-kappa-nu) and of four IEEE societies, and serves on the Rutgers Department of Electrical and Computer Engineering Industry Advisory Board.[3](https://ece.rutgers.edu/pete-pupalaikis) • [1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering)
## Ventures and service
Nubis Communications is the one documented startup venture: he is one of its co-founders and its director of signal integrity, and his ORCID record lists the affiliation from 21 September 2020.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering) • [4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis) • [5](https://orcid.org/0000-0001-7725-5165) Beyond the company, his service role documented in the sources is membership on the Rutgers ECE Industry Advisory Board.[1](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering)
## Reception and influence
**An industrial R&D path to NAE recognition.** Pupalaikis's career is an example of academy recognition earned inside industry rather than academia: his formal training ended with a 1988 bachelor's degree, and his record was built on instruments and products rather than academic appointments. The through-line is measurable. In 2013 he held 29 patents and led the development of the oscilloscopes his company called the world's fastest;[2](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775) by 2024 he self-reported 56 US patents, almost all embodied in commercial products,[4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis) and Equilar records over 50 patents, the Cambridge book, a chapter in *Modern RF/Microwave Measurement Techniques* and over 40 papers.[8](https://people.equilar.com/bio/person/pete-pupalaikis-nubis-communications/70576641) The patent figures are consistent as a growth over time rather than a contradiction, but the 2024 count rests on his own statement.
**Where the record is thin.** Several details remain unsettled in the independent record: his specific role in the co-authored 190-GBaud DAC paper, any study beyond the Rutgers BSEE, the reported Ciena transaction, and the details of his recent open-source and 2025 work. These points rest on self-reported sourcing or are simply absent from the available documents.[5](https://orcid.org/0000-0001-7725-5165) • [4](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis)
## References
1. [ECE Alumnus Peter J. Pupalaikis Elected to National Academy of Engineering | Rutgers School of Engineering](https://soe.rutgers.edu/news/ece-alumnus-peter-j-pupalaikis-elected-national-academy-engineering)
2. [Teledyne LeCroy Press Release: Peter J. Pupalaikis Named IEEE Fellow (January 23, 2013)](https://www.teledynelecroy.com/pressreleases/document.aspx?capid=103&mid=514&news_id=1775)
3. [Pete Pupalaikis | Electrical and Computer Engineering, Rutgers University](https://ece.rutgers.edu/pete-pupalaikis)
4. [Meet ECE Alumnus Peter Pupalaikis | Rutgers School of Engineering](https://soe.rutgers.edu/news/meet-ece-alumnus-peter-pupalaikis)
5. [Peter Pupalaikis (0000-0001-7725-5165) - ORCID](https://orcid.org/0000-0001-7725-5165)
6. [Peter J. Pupalaikis | Signal Integrity Journal](https://www.signalintegrityjournal.com/authors/232-peter-j-pupalaikis)
7. [Peter Pupalaikis | IEEE IMS](https://ieee-ims.org/contact/peter-pupalaikis)
8. [Pete Pupalaikis - Equilar ExecAtlas executive bio](https://people.equilar.com/bio/person/pete-pupalaikis-nubis-communications/70576641)
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*Topic: Encyclopedia › Technology and the built world › Engineers and computer scientists › Engineers and materials scientists › Researchers in electrical engineering, semiconductors, communications, and signal processing › Signal processing*
*Initially written Sep 17, 2026 · Reviewed: Sep 19, 2026 · Edited: Sep 19, 2026; Oct 15, 2026 · Last review: Sep 19, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license