MS-PhD Candidate
[2019 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Email: pes7986@yonsei.ac.kr, backdmstjd@naver.com
Research Topics/Interests
CMOS-compatible single-photon avalanche diodes (SPADs)
Direct ToF (dToF) sensor systems based on CMOS SPADs
Back-illuminated (BI) 3D-stacked CMOS SPADs
Short-wave infrared (SWIR) SPADs
MS-PhD Candidate
[2020 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Email: phs0817@yonsei.ac.kr, lionel_m@naver.com
Research Topics/Interests
CMOS SPAD pixel circuits and arrays
Time-to-digital converters (TDCs)
Single-photon avalanche diodes (SPADs)
RGB-D Sensors and Physical AI
MS-PhD Candidate
[2021 - Present] Yonsei University - KIST association course (Co-Advisor: Prof. Youngcheol Chae)
[2020 - 2021] Undergraduate researcher with ADS Lab
Email: keithch@naver.com, keithch@yonsei.ac.kr, keithch@kist.re.kr
Research Topics/Interests
CMOS SPAD pixel circuits and arrays
Equivalent circuit modeling for CMOS SPADs
Single-photon avalanche diodes (SPADs)
SPAD-based indirect ToF (iToF) sensors
PhD Candidate
[2024 - Present] Yonsei University - KIST association course (Co-Advisor: Prof. Woo-Young Choi)
Researcher
[2023 - 2024] Researcher with ADS Lab
M.S. Candidate
[2021 - 2023] Yonsei University - KIST association course (Co-Advisor: Prof. Woo-Young Choi)
Graduate Researcher
[2020 - 2021] Graduate researcher with ADS Lab
Email: dja1995@yonsei.ac.kr, dja1995@kist.re.kr
Research Topics/Interests
Efficiency improvement techniques for CMOS SPADs
Back-illuminated CMOS SPADs
Device simulation (TCAD)
Avalanche-mode LEDs (AM-LEDs)
PhD Candidate
[2023 - Present] Yonsei University - KIST association course (Co-Advisor: Prof. Woo-Young Choi)
Email: mark777k@yonsei.ac.kr, mark777k@kist.re.kr
Research Topics/Interests
Single-photon avalanche diodes (SPADs) in standard CMOS technology
Novel SPAD structures for performance enhancement
SPAD pixel circuits
dToF/LiDAR systems
MS-PhD Candidate
[2023 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Graduate Researcher
[2023.01. - 09.] Graduate researcher with ADS Lab
Undergraduate Researcher (Intern)
[2022.09. - 12.] Undergraduate researcher with ADS Lab
Email: sy.yook127@yonsei.ac.kr, sy.yook127@gmail.com
Research Topics/Interests
Single-photon avalanche diodes (SPADs) in standard CMOS technology
Performance improvement of CMOS SPADs
Reliability and lifetime evaluation of CMOS SPADs
Silicon photomultipliers (SiPMs) based on standard CMOS technology
M.S. Candidate
[2024 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Undergraduate Researcher (Intern)
[2022.08. - 2023.02.] Undergraduate researcher with ADS Lab
Email: dewy@yonsei.ac.kr, doooheee@yonsei.ac.kr
Research Topics/Interests
Characterization and performance improvement of CMOS SPADs
Rad-hard SPADs (radiation-tolerant SPADs)
Single-photon detectors for space and biomedical applications
M.S. Candidate
[2025 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Dr. Dae-Hwan Ahn)
Email: fff0807@naver.com
Research Topics/Interests
Integration of a photodetector on a waveguide
Heterogeneous integration of photonic devices on electronic devices using wafer bonding technology
MS-PhD Candidate
[2025 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Email: ahn4711948@yonsei.ac.kr
Research Topics/Interests
High-speed Mach-Zehnder modulators
Micro-ring modulators
Silicon photonics & co-packaged optics (CPO)
MS-PhD Candidate
[2026 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Youngcheol Chae)
Email: eric9904@yonsei.ac.kr, eric9904@naver.com
Research Topics/Interests
Single-photon avalanche diodes (SPADs)
CMOS SPAD pixel circuits and arrays
Time-delay integration (TDI) line sensors
MS-PhD Candidate
[2026 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Email: 2000qazwsx@yonsei.ac.kr
Research Topics/Interests
Silicon photonics
Optical-interconnect systems
Ring and Mach-Zehnder modulators
MS-PhD Candidate
[2026 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Prof. Woo-Young Choi)
Email: ckddjr54@yonsei.ac.kr, ckddjr54@naver.com
Research Topics/Interests
Monolithic optical receivers
CMOS avalanche photodetectors
M.S. Candidate
[2026 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Dr. Jae-Hoon Han)
Email: Kju758874@gmail.com
Research Topics/Interests
Silicon photonic device design based on waveguide structure and optical signal control
Structural and electrical modeling of advanced semiconductor devices
Performance Improvement of photonic integrated circuits (PICs)
M.S. Candidate
[2026 - Present] Electrical and Electronic Engineering, Yonsei University (Co-Advisor: Dr. Dae-Hwan Ahn)
Email: hongsj124@naver.com
Research Topics/Interests
Quantum photonics
Silicon photonics
Quantum key distribution (QKD)
Undergraduate Researcher (Intern)
[2025.07. - Present] Undergraduate researcher with ADS Lab
Email: wmg324@naver.com
Research Topics/Interests
Single-photon avalanche diodes (SPADs)
Integrated circuits
Undergraduate Researcher (Intern)
[2025.09. - Present] Undergraduate researcher with ADS Lab
Email: tom3447@yonsei.ac.kr
Research Topics/Interests
Superconducting nanowire single-photon detector (SNSPD) readout circuits
Quantum computing
Undergraduate Researcher (Intern)
[2026.01. - Present] Undergraduate researcher with ADS Lab
Email: jolibee7@yonsei.ac.kr
Research Topics/Interests
CMOS single-photon avalanche diodes (SPADs)
Undergraduate Researcher (Intern)
[2026.01. - Present] Undergraduate researcher with ADS Lab
Email: jungh1014@naver.com, jungh1014@yonsei.ac.kr
Research Topics/Interests
CMOS-based semiconductor devices
Optical sensor devices and ToF sensor applications
Email: ejchun35@yonsei.ac.kr