Computational Photonics Laboratory — UMBC

Ergun Simsek
accelerating photonic device design with modern solvers and machine learning.

Assistant Professor, Department of Computer Science and Electrical Engineering, University of Maryland, Baltimore County. Building numerical solvers and machine-learning methods for photodetectors, microresonators, and multilayered photonic structures.

Portrait of Ergun Simsek
ITE Building · UMBC

01 — About

A background in understanding and engineering the waves that shape our world.

Dr. Simsek received a B.S. in Electrical and Electronics Engineering from Bilkent University (2001), an M.S. from the University of Massachusetts Dartmouth (2003), and a Ph.D. in Electrical and Computer Engineering from Duke University (2006), where his dissertation addressed electromagnetic scattering from inhomogeneous objects embedded in layered media.

He subsequently worked as a postdoctoral research associate at Schlumberger-Doll Research, and held faculty positions at Bahçeşehir University and George Washington University before joining UMBC in 2018, where he is now an Assistant Professor in the Department of Computer Science and Electrical Engineering.

His group develops numerical solvers and machine-learning methods for problems where light interacts with multilayered structures from photodetector design to microresonator dispersion. He is a Senior Member of IEEE, a Senior Member of Optica, a life member of ACES, and a licensed Professional Engineer.

Publications100+
Citations1,924
h-index / i10-index20 / 39
Years in academia16
PE LicenseNo. E 22513
MembershipsIEEE, Optica, ACES
02 — Research

Waves. Computation. Discovery.

"One scientific epoch ended and another began with James Clerk Maxwell."
— Albert Einstein

Photodetector Modeling & Design

Coupled electro-opto-thermal drift-diffusion solvers for p-i-n and modified uni-traveling-carrier photodetectors, paired with evolutionary and adjoint optimization to push III-V and Si-Ge devices toward higher bandwidth and lower phase noise for frequency-comb and RF-photonic systems.

Drift-diffusion · PSO · Adjoint methods

Machine Learning for Photonics & EM

Energy-efficient neural networks built around device physics rather than off-the-shelf architectures — applied to electromagnetic object classification, inverse design, resolution enhancement, and dispersion metrology for microresonators.

Inverse design · Classification · Metrology

Optical Frequency Combs & Microresonators

Mixed-field and finite-difference solvers for dielectric ring resonators and waveguides, coupled with Lugiato–Lefever modeling to characterize dispersion and support low-noise, chip-scale comb generation.

Mode solvers · Ring resonators · Dispersion

Wave Propagation & Plasmonics in Layered Media

Layered-medium Green's functions and singularity-subtracted integral equation solvers for scattering problems, applied to surface-plasmon sensors and 2D-material (graphene, MoS₂, WSe₂) absorbers and modulators embedded in multilayer stacks.

LMGFs · SPR sensing · 2D materials
03 — Publications

Selected recent journal articles.

10 most recent of 46+ peer-reviewed articles.

01

Accuracy and Computational Cost of Machine Learning Models for Electromagnetic Object Classification

E. Simsek — IEEE Open Journal of Antennas and Propagation, 2026 · DOI
02

A Multi-Objective Permittivity Optimization for Object Classification at the Speed of Light

E. Simsek, S. H. Oishe — Machine Learning: Science and Technology, vol. 6, 045014, 2025 · DOI
03

A Mixed-Field Formulation for Modeling Dielectric Ring Resonators and Its Application in Optical Frequency Comb Generation

E. Simsek, A. Niang, R. Islam, L. Courtright, P. Shandilya, G. M. Carter, C. R. Menyuk — Scientific Reports, vol. 15, 35098, 2025 · DOI
04

Practical Vectorial Mode Solver for Dielectric Waveguides Based on Finite Differences

E. Simsek — Optics Letters, vol. 50, no. 12, pp. 4102–4105, 2025 · DOI
05

2D Material-Based Plasmonic Phototransistors Under Strong Optical Excitations

R. Islam, I. Anjum, C. R. Menyuk, E. Simsek — Journal of Computational Electronics, vol. 24, no. 4, 104, 2025 · DOI
06

Sources of Nonlinearity and Mitigation of Phase Noise in MUTC Photodetectors at Comb-Line Frequencies

I. M. Anjum, E. Simsek, S. E. Jamali Mahabadi, T. F. Carruthers, C. R. Menyuk, J. C. Campbell, D. A. Tulchinsky, K. J. Williams — Optics Express, vol. 33, no. 11, pp. 24130–24140, 2025 · DOI
07

Study of an MoS₂ Phototransistor Using a Compact Numerical Method Enabling Detailed Analysis of 2D Material Phototransistors

R. Islam, I. Md. Anjum, C. R. Menyuk, E. Simsek — Scientific Reports, vol. 14, 15269, 2024 · DOI
08

Classification with Electromagnetic Waves

E. Simsek, H. R. Manyam — IET Microwaves, Antennas & Propagation, vol. 18, no. 12, pp. 898–910, 2024 · DOI
09

Substrate Optimization with the Adjoint Method and Layered Medium Green's Functions

E. Simsek, R. Islam, S. H. Oishe, C. R. Menyuk — JOSA B, vol. 41, no. 10, pp. 2259–2265, 2024 · DOI
10

Study of an MoS2 phototransistor using a compact numerical method enabling detailed analysis of 2D material phototransistors

R. Islam, I. Md. Anjum, C. R. Menyuk, and E. Simsek — Scientific Reports, vol. 14, no. 15269, 2024 · DOI

The complete list of journal articles can be found on this page. The complete list of conference papers can be found on this page.

04 — Teaching

Currently in the classroom.

CourseTitleTerm
ENEE 684 Introduction to PhotonicsUpcoming Fall 2026 · 7 students
CMPE 306 Introductory Circuit Theory Spring 2026 · 89 students
CMPE 330 Electromagnetic Waves and Transmission Spring 2026 · 23 students
ENEE 680 Electromagnetic Theory Fall 2023–2025
CMPE 330 Electromagnetic Waves and Transmission Spring 2024–2025
ENEE 691 Special Topics — Machine Learning and Photonics Spring 2023 · 14 students
CMSC 411 Computer Architecture Fall 2022 · 36 students
05 — Group

Lab Members.

Ph.D. Students

Raonaqul Islam
Advisor · expected graduation Dec. 2026
Nicholas Pankow
Co-advised with Dr. Gary Carter

Recent Alumni & Undergraduate Researchers

Dr. Ishraq Md Anjum
Ph.D. 2026, co-advised with Dr. Curtis R. Menyuk
Isabella Morgan, Asher Banwo, Harel Lendo & others
Undergraduate researchers, supported through Meyerhoff Scholars, DREU, and QSI programs
William Truitt, Ethan Rizzutti, and Abhinna Das
Undergraduate researchers working on the time-domain thermo-reflectance measurement setup.
06 — Contact

Get in touch.

Office ITE Building, Room 325K
1000 Hilltop Circle
Baltimore, MD 21250
(410) 455-3540 (Webex)

Research Lab Technology Research Center (TRC), Rooms 201–205
Dr. Simsek's office: Room 201-B
Computational Lab: Room 202
Experimental Lab: Room 107-C
5200 Westland Blvd
Baltimore, MD 21227

Prospective students — email a transcript, GRE/TOEFL scores if applicable, and a short note about your interests.