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2025	Eo-Jin Kim, Hyun-Seung Choi, Doyoon Eom, Joo-Hyun Kim, Ping Zheng, Eng-Huat Toh, Elgin Quek, Deepthi Kandasamy, Yew Tuck Chow, Woo-Young Choi, Myung-Jae Lee
Modeling-Based Optimization of a Single-Photon Avalanche Diode: Towards Integrated Quantum Photonics Devices Operating at Room-Temperature
IEEE JOURNAL OFSELECTEDTOPICSINQUANTUMELECTRONICS,VOL.31,NO.5, pp. 3801509, SEPTEMBER/OCTOBER2025

2025	Jae-Koo Park, Dae-Won Rho, Seung-Jae Yang and Woo-Young Choi
An 80-Gb/s/pin Single-Ended Voltage-Mode PAM-4 Transmitter With a Pulsewidth Pre-Emphasis and a 4-Tap FFE in 28-nm CMOS
IEEE Journal of Solid-State Circuits, Vol. 60, No. 2, pp.519-527, Feb. 2025

2024	Kihun Kim, Jun-Seo Kim, Jae-Young Kim, and Woo-Young Choi
A Large-Signal SPICE Model for VCSEL Based on Piece-wise Linear RLC Elements
IEEE Photonics Technology Letters, Volume: 36, Issue: 24, 15 December 2024

2024	Youngkwan Jo, Matthieu Oberon, Anna Peczek, Yongjin Ji, Minkyu Kim, Hyun-Kyu Kim, Min-Hyeong Kim, Pascal M. Seiler, Stefan Lischke, Christian Mai, Lars Zimmermann and Woo-Young Choi
Novel Monolithic All-Silicon Coherent Transceiver Sub-Assembly based on Ring Modulators
IEEE/OSA Journal of Lightwave Technology, Vol. 42, No. 20, pp. 7298-7306, Oct. 2024

2024	Sung-Han Jeon, Dae-Hwan Ahn, Kyul Ko, Won Jun Choi, Jin-Dong Song,Woo-Young Choi, and Jae-Hoon Han
Responsivity Enhancement of Wafer-Bonded In 0.53 Ga 0.47 AsPhoto-Field-Effect Transistor on Si Substrate via EquivalentOxide Thickness Scaling
Physical Status Solidi A, Volume 221, pp.2300664, Jul 2024

2024	Seung-Jae Yang, Jae-Ho Lee, Myung-Jae Lee, and Woo-Young Choi
A 20 Gb/s CMOS single-chip 850 nm optical receiver
IEEE/Optica Journal of Lightwave Technology, Vol. 42, No. 13, pp. 4525-4530, July. 2024

2024	Hyun-Kyu Kim, Jae-Ho Lee, Minkyu Kim, Youngkwan Jo, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A 4-λ × 28-Gb/s/λ Silicon Ring-resonator-based WDM Receiver with a Reconfigurable Temperature Controller
IEEE/Optica Journal of Lightwave Technology, Vol. 42, No. 7, pp. 2296-2302, Apr. 2024

2024	Min-Hyeok Seong, Yongjin Ji, Chul-Soon Im, Youngseok Bae, and Woo-Young Choi
Modulation Linearity Characterization of Si Mach-Zehnder Modulators
IEEE/Optica Journal of Lightwave Technology, Vol. 42, No. 6, pp.1901-1909, Mar. 2024

2024	Jung-Tack Yang, Hyewon Han, and Woo-Young Choi
Deep Learning-based Extraction of Auger and FCA Coefficients in 850 nm GaAs/AlGaAs Laser Diodes
Current Optics and Photonics, Vol. 8, No. 1, pp.80-85, Feb. 2024

2024	Eunsung Park, Doyoon Eom, Myeong-Hun Yu, Yun-Mi Moon, Dae-Hwan Ahn, Jongtae Ahn, Do Kyung Hwang, Woo-Young Choi, Myung-Jae Lee
Back-Illuminated Double-Avalanche-Region Single-Photon Avalanche Diode (Invited Paper)
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 30, No. 1, Art. No. 3800809, Feb. 2024

2024	Won-Yong Ha, Eunsung Park, Doyoon Eom, Hyo-Sung Park, Francesco Gramuglia, Pouyan Keshavarzian, Ekin Kizilkan, Claudio Bruschini, Daniel Chong, Shyue Seng Tan, Michelle Tng, Elgin Quek, Edoardo Charbon, Woo-Young Choi, Myung-Jae Lee
SPAD Developed in 55 nm Bipolar-CMOS-DMOS Technology Achieving Near 90% Peak PDP
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 30, NO. 1, JANUARY/FEBRUARY 2024

2024	Minuk Seung, Jong-Gyun Choi, Woo-young Choi, Inyong Kwon
Radiation-hardened-by-design preamplifier with binary weighted current source for radiation detector
Nuclear Engineering and Technology, Vol. 56, pp. 189–194, Jan. 2024

2024	Eunsung Park, Won-Yong Ha, Hyo-Sung Park, Doyoon Eom, Hyun-Seung Choi, Dae-Hwan Ahn, Woo-Young Choi, Myung-Jae Lee,
A Back-Illuminated SPAD Fabricated With 40 nm CMOS Image Sensor Technology Achieving Near 40% PDP at 940 nm
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 30, No. 1, Art. no. 3800207, Jan./Feb. 2024

2023	Daehong Kim, Jung-Tack Yang, Woo-Young Choi, Younghyun Kim
Improved Far-Field Angle in Narrow-Ridge High-Power Laser Diodes Using a Double Stripe Structure
IEEE Photonics Journal, Vol. 15, No. 6, Art. No. 1502807, Dec. 2023

2023	Minuk Seung , Duckhyun Kim , Dongseong Shin , Troy C. Unruh , Kevin Tsai , Woo-Young Choi, and Inyong Kwon
In-Core Neutron Detection System Using a Dual-Mode Self-Reset Preamplifier With the Micro-Pocket Fission Detector
IEEE Transactions on Instrumentation and Measurement, vol. 72, Art. no. 2007910, Oct. 2023

2023	Hyun-Kyu Kim, Kihun Kim, Min-Hyeok Seong, Yongjin Ji, and Woo-Young Choi
A Bias Controller for Si Mach-Zehnder Modulator
IEEE Photonics Technology Letters, Vol. 35, No. 19, pp. 1027-1030, Oct. 2023

2023	Daehwan Ahn, Sunghan Jeon, Hoyoung Suh, Seungwan Woo, Rafael Jumar Chu, Daehwan Jung, Won Jun Choi, Donghee Park, Jin-Dong Song, Woo-Young Choi, and Jae-Hoon Han
High-responsivity InAs quantum well photo-FET integrated on Si substrates for extended-range short-wave infrared photodetector applications
Photonics Research, Vol. 11, No. 8, pp.1465-1473, Aug. 2023

2023	Youngkwan Jo, Yongjin Ji, Minkyu Kim, Stefan Lischke, Christian Mai, Lars Zimmermann and Woo-Young Choi
Monte Carlo characterization of Si ring modulator PAM-4 eye diagram performance
Japanese Journal of Applied Physics, Vol. 62, No. 6, Art. no. 066502, Jun. 2023

2023	Hyun-Kyu Kim, Yongjin Ji, Kihun Kim and Woo-Young Choi
A Controller for Si MZI-based Spanke-Benes Optical Switch Fabric with Automatic Calibration Capability
IEEE Photonics Journal, Vol. 15, No. 3, Art. no. 6601606, Jun. 2023

2023	Won-Yong Ha, Eunsung Park, Doyoon Eom, Hyo-Sung Park, Daniel Chong, Shyue Seng Tan, Michelle Tng, Elgin Quek, Claudio Bruschini, Edoardo Charbon, Woo-Young Choi and Myung-Jae Lee
Single-Photon Avalanche Diode Fabricated in Standard 55 nm Bipolar-CMOS-DMOS Technology With Sub-20 V Breakdown Voltage
Optics Express, Vol. 31, No. 9, pp.13798-13805, Apr. 2023

2022	Minuk Seung, Wooyoung Choi, Seop Hur, Inyong Kwon
Cold Junction Compensation Technique of Thermocouple Thermometer Using Radiation-Hardened-by-Design Voltage Reference for Harsh Radiation Environment
IEEE Transactions on Instrumentation and Measurement, Vol. 71, Art. no. 2005807, Sep. 2022

2022	Jung-Tack Yang, Jung-Geun Kwak, An-Sik Choi, Tae-Kyung Kim, and Woo-Young Choi
Lateral Far-field Characteristics of Narrow-width 850 nm High Power GaAs/AlGaAs Laser Diodes
Current Optics and Photonics, Vol. 6, No. 2, pp. 191–195, Apr. 2022

2022	Won-Yong Ha, Eunsung Park, Byungchoul Park, Youngcheol Chae, Woo-Young Choi and Myung-Jae Lee
Noise optimization of single-photon avalanche diodes fabricated in 110 nm CMOS image sensor technology
Optics Express, Vol. 30, No. 9, pp.14958-14965, Apr. 2022

2021	Youngkwan Jo, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
Modulation Linearity Characterization of Si Ring Modulators
IEEE/OSA Journal of Lightwave Technology, Vol. 39, No. 24, pp.7842-7849, Dec. 2021

2021	Minkyu Kim, Youngkwan Jo, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A Temperature-Aware Large-signal SPICE Model for Depletion-type Silicon Ring Modulators
IEEE Photonics Technology Letters, Vol. 33, No. 17, pp. 947-950, Sep. 2021

2021	Minkyu Kim, Min-Hyeong Kim, Youngkwan Jo, Hyun-Kyu Kim, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A Silicon Electronic-Photonic Integrated 25-Gb/s Ring Modulator Transmitter with a Built-in Temperature Controller
Photonics Research, Vol. 9, No. 4, pp.507-513, Apr. 2021

2021	Hyun-Kyu Kim, Minkyu Kim, Min-Hyeong Kim, Youngkwan Jo, Stefan Lischke, Christian Mai, Lars Zimmermann and Woo-Young Choi
Si photonic-electronic monolithically integrated optical receiver with a built-in temperature-controlled wavelength filter
Optics Express, Vol. 29, No. 6, pp.9565-9573, Mar. 2021

2021	Minkyu Kim, Dae-Hyun Kwon, Dae-Won Rho, and Woo-Young Choi
A Low-Power 28-Gb/s PAM-4 MZM Driver with Level Pre-distortion
IEEE Transactions on Circuits and Systems II, Vol.68, No.3, pp.908-912, Mar. 2021

2020	Dae-Hyun Kwon, Minkyu Kim, Sung-Geun Kim, and Woo-Young Choi
A Low-Power 40-Gb/s Pre-Emphasis PAM-4 Transmitter with Toggling Serializers
IEEE Transactions on Circuits and Systems II, Vol.67, No.3, pp.430-434, Mar. 2020

2019	Jung-Tack Yang, Younghyun Kim, Marzieh Pournoury, Jae-Bong Lee, Dong-Soo Bang, Tae-Kyung Kim, and Woo-Young Choi
Influence of Emitter Width on the Performance of 975-nm (In,Ga)(As,P)/(Al,Ga)As High-power Laser Diodes
Current Optics and Photonics, Vol. 3, No. 5, pp. 445-450, Oct. 2019

2019	Minkyu Kim, Myungjin Shin, Min-Hyeong Kim, Byung-Min Yu, Younghyun Kim, Yoojin Ban, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A Large-signal SPICE Model for Depletion-type Silicon Ring Modulators
Photonics Research, Vol. 7, No. 9, pp.948-954, Sep. 2019

2019	Younghyun Kim, Youngkwan Jo, Minkyu Kim, Byung-Min Yu, Christian Mai, Stefan Lischke, Lars Zimmermann, and Woo-Young Choi
Parametric Optimization of Depletion-type Si Micro-ring Modulator Performances
Japanese Journal of Applied Physics, Vol. 58, No. 6, Art. no. 062006, Jun. 2019

2019	Younghyun Kim, Jung-Tack Yang, Woo-Young Choi
High-power broad-area laser diode performance improvement with a double pedestal structure
Japanese Journal of Applied Physics, Vol. 58, Art. no. 042004, Mar. 2019

2019	Dae-Hyun Kwon, Minkyu Kim, Sung-Geun Kim, and Woo-Young Choi
A 32-Gb/s PAM-4 Quarter-Rate Clock and Data Recovery Circuit with an Input Slew-rate Tolerant Selective Transition Detector
IEEE Transactions on Circuits and Systems II, Vol. 66, No. 3, pp.362 - 366, Mar. 2019

2019	Min-Hyeong Kim, Lars Zimmermann, Woo-Young Choi
A Temperature Controller IC for Maximizing Si Micro-Ring Modulator Optical-Modulation-Amplitude
IEEE/OSA Journal of Lightwave Technology, Vol. 37, No. 4, pp.1200-1206, Feb. 2019

2018	Myung-Jae Lee and Woo-Young Choi
Performance Optimization and Improvement of Silicon Avalanche Photodetectors in Standard CMOS Technology (Invited Paper)
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 24, No. 2, 3801013, Mar./Apr. 2018

2018	Byung-Min Yu, Jeong-Min Lee, Christian Mai, Stefan Lischke, Lars Zimmermann, and Woo-Young Choi
A Single-Chip Si Optical Single-Sideband Modulator
Photonics Research, Vol. 6, No. 1, pp. 6-11, Jan. 2018

2017	Min-Hyeong Kim, Byung-Min Yu, and Woo-Young Choi
A Mach-Zehnder Modulator Bias Controller Based On OMA and Average Power Monitoring
IEEE Photonics Technology Letters, Vol. 29, No. 23, pp. 2043-2046, Dec. 2017

2017	Jeong-Min Lee, Minkyu Kim, and Woo-Young Choi
Series Resistance Influence on Performance of Waveguide-Type Germanium Photodetectors on Silicon
Chinese Optics Letters, Vol. 15, No. 10, 100401, Oct. 2017

2017	Hyun-Yong Jung, Jeong-Min Lee, Stefan Lischke, Dieter Knoll, Lars Zimmermann, and Woo-Young Choi
A 25-Gb/s Monolithic Optical Receiver with Improved Sensitivity and Energy Efficiency
IEEE Photonics Technology Letters, Vol. 29, No. 17, pp. 1483-1485, Sep. 2017

2017	Byung-Min Yu, Myungjin Shin, Min-Hyeong Kim, Lars Zimmermann, and Woo-Young Choi
Influence of dynamic power dissipation on Si MRM modulation characteristics
Chinese Optics Letters, vol.15, no.7, 071301, Jul. 2017

2017	Myungjin Shin, Yoojin Ban, Byung-Min Yu, Min-Hyeong Kim, Jinsoo Rhim, Lars Zimmermann, and Woo-Young Choi
A Linear Equivalent Circuit Model for Depletion-Type Silicon Microring Modulators
IEEE Transactions on Electron Devices, Vol. 64, No. 3, pp.1140-1145, Mar. 2017

2016	Jeong-Min Lee, Seong-Ho Cho, and Woo-Young Choi
An Equivalent Circuit Model for a Ge Waveguide Photodetector on Si
IEEE Photonics Technology Letters, Vol. 28, No. 21, pp.2435-2438, Nov. 2016

2016	MyungJin Shin, Yoojin Ban, Byung-Min Yu, Jinsoo Rhim, Lars Zimmermann, and Woo-Young Choi
Parametric Characterization of Self-Heating in Depletion-Type Si Micro-Ring Modulators
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 22, No. 6, pp. 3400207, Nov./Dec. 2016

2016	Dae-hyun Kwon, Jinsoo Rhim, and Woo-Young Choi
A 10-Gb/s Multiphase Clock and Data Recovery Circuit with a Rotational Bang-Bang Phase Detector
Journal of Semiconductor Technology and Science, Vol. 16, No. 3, pp. 287-292, June 2016

2016	Sung-Geun Kim, Jinsoo Rhim, Dae-Hyun Kwon, Min-Hyeong Kim, and Woo-Young Choi
A Low-Voltage PLL with a Supply-Noise Compensated Feedforward Ring VCO
Transactions on Circuits and Systems II, Vol. 63, No. 6, pp. 548-552, June. 2016

2016	Myung-Jae Lee, and Woo-Young Choi
Effects of Parasitic Resistance on the Performance of Silicon Avalanche Photodetectors in Standard CMOS Technology
IEEE Electron Device Letters, Vol. 37, No. 1, pp. 60-63, Jan. 2016

2015	Duho Kim, Minsu Ko, David Ng, Woo-Young Choi
A Single-Bit Sampling Demodulator for Biomedical Implants
Microelectronics Journal, Vol. 46, No. 8, pp. 669-673, Aug. 2015

2015	Myung-Jae Lee, Jeong-Min Lee, Holger Rücker, and Woo-Young Choi
Bandwidth Improvement of CMOS-APD With Carrier-Acceleration Technique
IEEE Photonics Technology Letters, Vol. 27, No. 13, pp.1387-1390, July. 2015

2015	Hyun-Yong Jung, Jeong-Min Lee, Woo-Young Choi
A High-Speed CMOS Integrated Optical Receiver with an Under-Damped TIA
IEEE Photonics Technology Letters, Vol. 27, No. 13, pp.1367-1370, July. 2015

2015	Dae-Hyun Kwon, Young-Seok Park, and Woo-Young Choi
A Clock and Data Recovery Circuit with Programmable Multi-Level Phase Detector Characteristics and a Built-in Jitter Monitor
IEEE Transactions on Circuits and Systems - I, Vol. 62, No. 6, pp. 1472-1480, Jun. 2015

2015	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Wang-Soo Kim, Woo-Young Choi
Low-power 850 nm optoelectronic integrated circuit receiver fabricated in 65 nm complementary metal-oxide semiconductor technology
IET Circuits, Devices & Systems, Vol 9, No. 3, pp.221-226, May. 2015

2015	Jinsoo Rhim, Yoojin Ban, Byung-Min Yu, Jeong-Min Lee, and Woo-Young Choi
Verilog-A behavioral model for resonance-modulated silicon micro-ring modulator
Optics Express, Vol. 23, No. 7, pp. 8762-8772, Apr. 2015

2014	Jinsoo Rhim, Jeong-Min Lee, Byung-Min Yu, Yoojin Ban, Seong-Ho Cho, and Woo-Young Choi
25-Gb/s Optical Transmitter with Si Ring Modulator and CMOS Driver
Journal of the Optical Society of Korea, Vol. 18, No. 5, pp. 564-568, Oct, 2014

2014	Hyun-Yong Jung, Jin-Sung Youn, and Woo-Young Choi
Design Optimization of Hybrid-Integrated 20-Gb/s Optical Receivers
Journal of Semiconductor Technology and Science, Vol. 14, No. 4, pp. 443-450, Aug. 2014

2014	Myung-Jae Lee, Holger Rücker, and Woo-Young Choi
Optical-Power Dependence of Gain, Noise, and Bandwidth Characteristics for 850-nm CMOS Silicon Avalanche Photodetectors
IEEE Journal of Selected Topics in Quantum Electronics, Vol. 20, No. 6, p. 3802807, Nov./Dec. 2014

2014	Young-Seok Park, Dae-hyun Kwon, K.-C. Choi and Woo-Young Choi
Multi-band VCO PLL with continuously maintained optimum VCO control voltage
Electronics Letters, Vol. 50, Issue 12, pp. 857-859, June 2014

2014	Joung-Wook Moon, Kwang-Chun Choi, and Woo-Young Choi
A 0.4-V 90~350-MHz PLL with an active loop-filter charge pump
IEEE Transactions on Circuits and Systems - II, VOL. 61, NO. 5, pp.319-323, MAY 2014

2014	Myung-Jae Lee, Jin-Sung Youn, Kang-Yeob Park, and Woo-Young Choi
A fully-integrated 12.5-Gb/s 850-nm CMOS optical receiver based on a spatially-modulated avalanche photodetector
Optics Express, Vol. 22, No. 3, pp. 2511-2518, Feb. 2014

2014	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rücker, and Woo-Young Choi
SNR characteristics of 850-nm OEIC receiver with a silicon avalanche photodetector
Optics Express, Vol. 22, No. 1, pp. 900-907, Jan. 2014

2013	Minsu Ko, Myung-Jae Lee, Holger Rücker, and Woo-Young Choi
Silicon photonics-wireless interface ICs for micro-/millimeter-wave fiber-wireless networks
Optics Express, Vol. 21, No. 19, pp. 22962-22973, Sep. 2013

2013	Kwang-Chun Choi, Sung-Geun Kim, Seung-Woo Lee, Bhum-Cheol Lee, and Woo-Young Choi
A 990uW 1.6-GHz PLL Based on a Novel Supply-Regulated Active Loop Filter VCO
IEEE Transactions on Circuits and Systems - II, Vol. 60, No. 6, pp.311-315, June. 2013

2013	Myung-Jae Lee and Woo-Young Choi
Area-Dependent Photodetection Frequency Response Characterization of Silicon Avalanche Photodetectors Fabricated With Standard CMOS Technology
IEEE Transactions on Electron Devices, Vol. 60, No. 3, pp. 998-1004, Mar. 2013

2013	Wang-Soo Kim and Woo-Young Choi
A 10-Gb/s low-power adaptive continuous-time linear equalizer using asynchronous under-sampling histogram
IEICE Electronics Express, Vol. 10, No. 4, pp.1-8, Feb. 2013

2012	Joung-Wook Moon and Woo-Young Choi
An 8-Gb/s Inductorless Adaptive Passive Equalizer in 0.18-um CMOS Technology
Journal of Semiconductor Technology and Science, Vol.12, No.4, pp.405-410, Dec. 2012

2012	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
An integrated 12.5-Gb/s optoelectronic receiver with a silicon avalanche photodetector in standard SiGe BiCMOS technology
Optics Express, Vol. 20, No. 27, pp.28153-28162, Dec. 2012

2012	Kang-Yeob Park, Won-Seok Oh, Yun-Sik Lee, Woo-Young Choi
Fully-Integrated Serial-Link Receiver with Optical Interface for Long-Haul Display Interconnects
IET Circuits, Devices & Systems, Vol.6, No.6, pp.375-385, Oct. 2012

2012	Wang-Soo Kim, Chang-Kyung Seong, and Woo-Young Choi
A 5.4-Gb/s Adaptive Continuous-Time Linear Equalizer Using Asynchronous Under-Sampling Histograms
IEEE Transactions on Circuits and Systems II, Vol. 59, No. 9, pp. 553-556, SEPTEMBER 2012

2012	Minsu Ko, Jin-Sung Youn, Myung-Jae Lee, Kwang-Chun Choi, Holger Rücker, and Woo-Young Choi
Silicon Photonics-Wireless Interface IC for 60-GHz Wireless Link
IEEE Photonics Technology Letters, Vol. 24, No. 13, pp. 1112-1114, July 1, 2012

2012	Kang-Yeob Park, Won-Seok Oh, Jong-Chan Choi, and Woo-Young Choi
A 5.28-Gb/s Serializer ASIC for Uncompressed Long-Haul Multimedia Interconnects
Springer Analog Integrated Circuits and Signal Processing, vol. 3, no. 1, pp. 385-395, Oct. 2012

2012	Chang-kyung Seong, Jinsoo Rhim and Woo-Young Choi
A 10-Gb/s Adaptive Look-Ahead Decision Feedback Equalizer with an Eye-Opening Monitor
IEEE Transactions on Circuits and Systems - II, Vol. 59, No. 4, pp.209-213, Apr. 2012

2012	Jae-Young Kim, Jun-Hyung Jo, Woo-Young Choi, and Hyuk-Kee Sung
Dual-Loop Dual-Modulation Optoelectronic Oscillators With Highly Suppressed Spurious Tones
IEEE Photonics Technology Letters, Vol. 24, No. 8, pp. 706-708, April. 2012

2012	Kwang-Chun Choi, Seung-Woo Lee, Bhum-Cheol Lee, and Woo-Young Choi
A Time-To-Digital Converter based on a Multi-Phase Reference Clock and a Binary Counter with a Novel Sampling Error Corrector
IEEE Transactions on Circuits and Systems - II, Vol. 59, No. 3, pp.143-147, Mar. 2012

2012	Kang-Yeob Park, Won-Seok Oh, Kyung-Sun Ham, and Woo-Young Choi
A 150-Mb/s CMOS Monolithic Optical Receiver for Plastic Optical Fiber Link
Journal of the Optical Society of Korea, Vol. 16, No. 1, pp. 1-5, March, 2012

2012	Young-Seok Park, and Woo-Young Choi
On-chip Compensation of Ring VCO Oscillation Frequency Changes due to Supply Noise and Process Variation
IEEE Transactions on Circuits and Systems II, Vol. 59, issue 2, pp.73-77, Feb. 2012.

2012	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, and Woo-Young Choi
10-Gb/s 850-nm CMOS OEIC Receiver with a Silicon Avalanche Photodetector
IEEE Journal of Quantum Electronics, Vol. 48, No. 2, pp. 229-236, Feb. 2012

2012	Myung-Jae Lee, Holger Rücker, and Woo-Young Choi
Effects of Guard-Ring Structures on the Performance of Silicon Avalanche Photodetectors Fabricated With Standard CMOS Technology
IEEE Electron Device Letters, Vol. 33, No. 1, pp. 80-82, Jan. 2012

2011	Minsu Ko, Duho Kim, Holger Rücker, and Woo-Young Choi
3-Gb/s 60-GHz Link With SiGe BiCMOS Receiver Front-End and CMOS Mixed-Mode QPSK Demodulator
Journal of Semiconductor Technology and Science, Vol. 11, No. 4, pp. 256-261, Dec. 2011

2011	Minsu Ko, Jae-Young Kim, Myung-Jae Lee, Holger Rücker, and Woo-Young Choi
A Silicon Balanced Subharmonic Optoelectronic Mixer for 60-GHz Fiber-Wireless Downlink Application
IEEE Photonics Technology Letters, Vol. 23, No. 23, pp.1805-1807, Dec. 2011

2011	Kang-Yeob Park, Won-Seok Oh, Jong-Chan Choi, and Woo-Young Choi
Design of 250-Mb/s Low-Power Fiber Optic Transmitter and Receiver ICs for POF Applications
Journal of Semiconductor Technology and Science, vol. 11, No. 3, pp. 221-228, Sept. 2011

2011	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
A bandwidth adjustable integrated optical receiver with an on-chip silicon avalanche photodetector
IEICE Electronics Express, Vol. 8, No. 7, pp.404-409, April 2011

2011	Myung-Jae Lee and Woo-Young Choi
Performance Comparison of Two Types of Silicon Avalanche Photodetectors Based on N-well/P-substrate and P+/N-well junctions Fabricated With Standard CMOS Technology
Journal of the Optical Society of Korea, Vol. 15, No. 1, pp. 1-3, Mar. 2011

2011	Jae-Young Kim, Woo-Young Choi, and Hyuk-Kee Sung
A Study on Modulation Configuration of Optoelectronic Oscillators Using Direct Modulation of Semiconductor Lasers
Japanese Journal of Applied Physics, Vol. 50, No. 032504, pp. 1-4, March, 2011

2011	Duho Kim, Minsu Ko, Kwang-Chun Choi, and Woo-Young Choi
Mixed-mode QPSK demodulator for home networking applications
IET Electronics Letters, Vol. 47, Issue 2, pp. 92-94, Jan. 20, 2011

2010	Kwang-Chun CHOI, Minsu KO, Duho KIM, and Woo-Young CHOI
Demonstration of 60-GHz Link Using a 1.6-Gb/s Mixed-mode BPSK Demodulator
IEICE Trans.Electron, Vol.E93-C, pp.1704-1707, Dec. 2010

2010	Myung-Jae Lee and Woo-Young Choi
A silicon avalanche photodetector fabricated with standard CMOS technology with over 1 THz gain-bandwidth product
Optics Express, Vol. 18, No. 23, pp.24189-24194, Nov. 2010

2010	Young-Seok Park, Pyung-Su Han, and Woo-Young Choi
Linear Analysis of Feedforward Ring Oscillators
IEICE Trans. Electron., Vol. E93-C, pp.1467-1470, Sep. 2010

2010	Kang-Yeob Park, Won-Seok Oh, and Woo-Young Choi
A 10-Gb/s trans-impedance amplifier with LC-ladder input configuration
IEICE Electronics Express, Vol. 7, No. 16, pp.1201-1206, Aug. 2010

2010	Chang-Kyung Seong, Seung-Woo Lee, and Woo-Young Choi
A New Network Synchronizer Using Phase Adjustment and Feed-Forward Filtering based on Low-Cost Crystal Oscillators
IEEE Transactions on Instrumentation and Measurement, Vol. 59, No. 7, pp.1764-1774, July 2010

2010	Jae-Young Kim and Woo-Young Choi
30 GHz CMOS Self-Oscillating Mixer for Self-Heterodyne Receiver Application
IEEE Microwave and Wireless Components Letters, Vol. 20, No. 6, pp. 334-336, June 2010

2010	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
7-Gb/s monolithic photoreceiver fabricated with 0.25-μm SiGe BiCMOS technology
IEICE Electronics Express, Vol. 7, No. 9, pp.659-665, May 2010

2009	Jin-Sung Youn, Hyo-Soon Kang, Myung-Jae Lee, Kang-Yeob Park, and Woo-Young Choi
High-Speed CMOS Integrated Optical Receiver with an Avalanche Photodetector
IEEE Photonics Technology Letters, Vol. 21, No. 20, pp. 1553-1555, Oct. 2009

2009	Hyo-Soon Kang, Myung-Jae Lee, and Woo-Young Choi
Low-Cost Multistandard Radio-Over-Fiber Downlinks Based on CMOS-Compatible Si Avalanche Photodetectors
IEEE Photonics Technology Letters, Vol. 21, No. 7, pp. 462-464, Apr. 2009

2009	Woo-Kyung Kim, Soon-Woo Kwon, Woo-Jin Jeong, Geun-Sik Son, Kwang-Hyun Lee, Woo-Young Choi, Woo-Seok Yang, Hyung-Man Lee, and Han-Young Lee
Integrated optical modulator for signal up-conversion over radio-on-fiber link
Optics Express, Vol. 17, No. 4, pp. 2638- 2645, Feb. 2009

2009	Pyung-Su Han and Woo-Young Choi
10Gbps injection-locked CDR with a simple bit transition detector in 0.18µm CMOS technology
IEICE Electronics Express, Vol. 6, No. 1, pp. 35-39, January, 2009

2008	Myung-Jae Lee, Hyo-Soon Kang, Kwang-Hyun Lee, and Woo-Young Choi
Self-Oscillating Harmonic Opto-Electronic Mixer Based on a CMOS-Compatible Avalanche Photodetector for Fiber-Fed 60-GHz Self-Heterodyne Systems
IEEE Transactions on Microwave Theory and Techniques, Vol. 56, No. 12, pp. 3180-3187, Dec. 2008

2008	Hyo-Soon Kang, Myung-Jae Lee, and Woo-Young Choi
6.25-Gb/s Optical Receiver Using a CMOS-Compatible Si Avalanche Photodetector
Journal of the Optical Society Korea, vol. 12, no 4, pp. 217-220, December 2008

2008	Duho Kim, Kwang-chun Choi, Young-Kwang Seo, Hyunchin Kim, and Woo-young Choi
A 622-Mb/s Mixed-mode BPSK Demodulator Using a Half-rate Bang-bang Phase Detector
IEEE Journal of Solid-State Circuits, Vol. 43, issue. 10, pp.2284-2292, Oct. 2008

2008	Kwang-Hyun Lee, Jae-Young Kim, and Woo-Young Choi
Injection-Locked Hybrid Optoelectronic Oscillators for Single-Mode Oscillation
IEEE Photonics technology letters, Vol. 20, No. 19, pp.1645-1647, Oct. 2008

2008	Myung-Jae Lee, Hyo-Soon Kang, and Woo-Young Choi
Equivalent Circuit Model for Si Avalanche Photodetectors Fabricated in Standard CMOS Process
IEEE Electron Device Letters, Vol. 29, No. 10, pp. 1115-1117, Oct. 2008

2008	Kwang-Hyun Lee, Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida, and Kenji Kurishima
Low-Cost Optoelectronic Self-Injection-Locked Oscillators
IEEE Photonics technology letters, Vol. 20, No. 13, pp. 1151-1153, July 2008

2008	Chang-Kyung Seong, Seung-Woo Lee, and Woo-Young Choi
A New 1.25-Gb/s Burst Mode Clock and Data Recovery Circuit Using Two Digital Phase Aligners and a Phase Interpolator
IEICE Transactions on Communications Vol.E91-B No.5 pp.1397-1402, May 2008

2007	Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
Integrated Heterojunction Bipolar Transistor Optically Injection-locked Self-oscillating Optoelectronic Mixers for Bi-directional Fiber-fed Wireless Applications
IEEE Trans. on Microwave theory and techniques, Vol. 55, No. 12, pp.2734-2739, December 2007

2007	Kwang-Hyun Lee, Jae-Young Kim, and Woo-Young Choi
A 30-GHz Self-Injection-Locked Oscillator Having a Long Optical Delay Line for Phase-Noise Reduction
IEEE PTL, Vol.19, no. 24, pp.1982-1984, Dec. 15, 2007

2007	Hyo-Soon Kang, and Woo-Young Choi
Fibre-supported 60 GHz self-heterodyne systems based on CMOS-compatible harmonic optoelectronic mixers
IEE Electronics Letters, Vol. 43, No. 20, pp. 1101-1103, Sep. 27, 2007

2007	Kwang-Hyun Lee and Woo-Young Choi
Harmonic signal generation and frequency up-conversion using selective sideband Brillouin amplification in single-mode fiber
Optics Letters, Vol. 32, No. 12, pp.1686-1688, June 2007

2007	Kwang-Hyun Lee, Woo-Young Choi, Young Ahn Leem, Kwang-Seong Choi, and Kyung Hyun Park
Harmonic Signal Generation and Frequency Up-Conversion Using a Hybrid Mode-Locked Multisection DFB Laser
IEEE Photonics Technology Letters, Vol. 19, No. 12, pp.901-903, Jun. 2007

2007	Hyo-Soon Kang, Myung-Jae Lee and Woo-Young Choi
Si avalanche photodetectors fabricated in standard complementary metal-oxide-semiconductor process
Applied Physics Letters, Vol. 90, 151118, April, 2007

2007	Kwang-Hyun Lee, Woo-Young Choi, Young Ahn Leem, Kyung Hyun Park
Harmonic Millimeter-Wave Generation and Frequency Up-Conversion using a Passively Mode-Locked Multi-Section DFB Laser under External Optical Injection
IEEE Photonics Technology Letters, Vol.19, No. 3, pp. 161-163, Feb. 2007

2007	Jae-Young Kim, Chang-Soon Choi, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
Characteristics of InP/InGaAs HPT-based Optically Injection-Locked Self-oscillating Optoelectronic Mixers and Their Influence on RoF System Performance
IEEE Photonics Technology Letters, Vol.19, No. 3, pp. 155-157, Feb. 2007

2007	Pyung-Su Han and Woo-Young Choi
1.25/2.5-Gb/s Dual Bit-Rate Burst-Mode Clock Recovery Circuits in 0.18-um CMOS Technology
IEEE Transactions on circuits and systems - 2: Express briefs, Vol. 54, No. 1, pp. 38-42, January 2007

2007	Chang-Kyung Seong, Seung-Woo Lee, and Woo-Young Choi
A 1.25-Gb/s Digitally-Controlled Dual-Loop Clock and Data Recovery Circuit with Enhanced Phase Resolution
IEICE Trans., Electron, Vol.E90-C, No.1, pp.165-170, Jan. 2007

2006	Ki-Hyuk Lee, Jae-Wook Lee, and Woo-Young Choi
A 0.18um CMOS 3.125-Gb/s Digitally Controlled Adaptive Line Equalizer with Feed-Forward Swing Control for Backplane Serial Link
IEICE Trans, Electron, Vol.E89-C, No.10, pp. 1454-1459, Oct. 2006

2006	Jun-Hyuk Seo, Young-Kwang Seo, and Woo-Young Choi
1.244-Gb/s Data Distribution in 60-GHz Remote Optical Frequency Up-Conversion Systems
IEEE Photonics Technology Letters, Vol. 18, No. 12, pp. 1389-1391, Jun. 2006

2006	Jun-Hyuk Seo, Chang-Soon Choi, Young-Shik Kang, Yond-Duck Chung, Jeha Kim, and Woo-Young Choi
SOA-EAM Frequency Up/Down-Converters for 60-GHz Bi-Directional Radio-on-Fiber Systems
IEEE Transactions on Microwave Theory and Techniques, vol. 54, no. 2, pp. 959-966, Feb. 2006

2005	Chang-Soon Choi, Jun-Hyuk Seo, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
60Ghz Bidirectional Radio-on-Fiber Links Based on InP-InGaAs HPT Optoelectronic Mixers
IEEE Photonics Technology Letters, Vol. 17, No. 12, pp. 2721-2723, Dec. 2005

2005	Chang-Soon Choi, Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
Optically Injection-Locked Self-Oscillating Optoelectronic Mixers Based on InP–InGaAs HPTs for Radio-on-Fiber Applications
IEEE Photonics Technology Letters, vol. 17, no. 11, pp.2415-2417, Nov. 2005

2005	Jun-Hyuk Seo, Chang-Soon Choi, Woo-Young Choi, Young-Shik Kang, Yong-Duck Chung, and Jeha Kim
Remote Optoelectronic Frequency Down-Conversion Using 60-GHz Optical Heterodyne Signals and an Electroabsorption Modulator
IEEE Photonics Technology Letters Vol. 17, No. 5, pp.1073-1075, May 2005

2005	Kwang-Hyun Lee, Young Min Jhon, Woo-Young Choi
Photonic phase shifters based on a vector-sum technique with polarization-maintaining fibers
Optics Letters, Vol. 30, No. 7, pp.702-704, April. 2005

2005	Chang-Soon Choi, Hyo-Soon Kang, Woo-Young Choi, Dae-Hyun Kim and Kwang-Seok Seo, Seoul National University
Phototransistors based on InP HEMTs and their applications to millimeter-wave radio-on-fiber systems
IEEE Transactions on Microwave Theory and Techniques, Vol. 53, No. 1, pp.256-263, Jan. 2005

2004	Ki-Hyuk Lee, Kyung-Hyun Park, and Woo-Young Choi
Measurement of the carrier lifetime and linewidth enhancement factor of semiconductor optical amplifiers using their optical modulation responses
Optical Engineering, Vol. 43, No. 11, pp. 2715-2718, Nov. 2004

2004	Hye-Seung Ryu, Young-Kwang Seo, and Woo-Young Choi
Dispersion-Tolerant Transmission of 155-Mb/s Data at 17GHz Using a 2.5Gb/s-Grade DFB Laser With Wavelength-Selective Gain From an FP Laser Diode
PHOTONICS TECHNOLOGY LETTERS, VOL. 16, NO. 8, pp. 1942-1944, AUGUST 2004

2004	Hyo-Soon Kang, Chang-Soon Choi, Woo-Young Choi, Dae-Hyun Kim, Kwang-Seok Seo, Seoul National University
Characterization of phototransistor internal gain in metamorphic high-electron-mobility transistors
Applied Physics Letters, Vol. 84, No. 19, pp.3780-3782, May. 2004

2003	Jun-Hyuk Seo, Young-Kwang Seo, and Woo-Young Choi
Spurious-Free Dynamic Range Characteristics of the Photonic Up-Converter Based on a Semiconductor Optical Amplifier
IEEE Photonics Technology Letters, Vol. 15, No. 11, pp.1591-1593, Nov. 2003

2003	Yu-Gun KIM, Chun-Oh LEE, Seung-Woo LEE, Hyun-Su CHAI, Hyun-Suk RYU, and Woo-Young CHOI
Novel 622 Mb/s Burst-Mode Clock and Data Recovery Circuits with Muxed Oscillators
IEICE Transactions on Communications, Vol.E86-B, No.11, pp.3288-3292, Nov. 2003

2003	Young-Kwang Seo, Jun-Hyuk Seo, and Woo-Young Choi
60-GHz RADIO-ON-FIBER DISTRIBUTION OF 2 x 622 Mb/s WDM CHANNELS USING REMOTE PHOTONIC-FREQUENCY UPCONVERSION
Microwave and Optical Technology Letter, Vol. 39, No. 3, pp.pp.201-203, Nov. 2003

2003	Hye-Seung Ryu, Young-Kwang Seo, Woo-Young Choi
Generation of Optical Single Sideband Using a Semiconductor Laser under Modulated Light Injection
Japanese Journal of Applied Physics, Vol.42, No.9A/B, pp.L1064-L1065, Sep. 2003

2003	JaeWook Lee, Cheon-O Lee, W.-Y.Choi
"A Giga-b/s CMOS Clock and Data Recovery Circuit with a Novel Adaptive Phase Detector "
IEICE Transaction on Communications , Vol.E86-B, No.7, pp.2186-2189, Jul. 2003

2003	K.-H. Lee, W.-Y. Choi, S. Choi, K. Oh
"A Novel Tunable Fiber-Optic Microwave Filter using Multimode DCF "
IEEE Photonics Technology Letters, Vol. 15, No. 7, pp.969-971, Jul. 2003

2003	Chang-Soon Choi,Hyo-Soon Kang, Dae-Hyun Kim, Kwang-Seok Seo and Woo-Young Choi, School of Electrical Engineering, Seoul National University
60GHz Harmonic Optoelectronic Up-Conversion Using an InAlAs/InGaAs Metamorphic High-Electron-Mobility Transistor on a GaAs Substrate
Jpn.J.Appl.Phys., Vol.42, pp.L658-L659, Jun. 2003

2003	C.-S. Choi, H.-S. Kang, W.-Y. Choi, H.-J. Kim, W.-j. Choi, D.-H. Kim, K.-C. Jang and KIST, Seoul National University, K.-S. Seo
High Optical Responsivity of InAlAs/InGaAs Metamorphic High-Electron Mobility Transistor on GaAs substrate with Composite Channels
IEEE Photonics Technology Letters, Vol. 15, No. 6, pp.846-848, Jun. 2003

2003	Y.-K. Seo, J.-H. Seo and W.-Y. Choi
" Photonic Frequency-Upconversion Efficiencies in Semiconductor Optical Amplifiers "
IEEE Photonics Technology Letters, Vol.15. no.5, pp.751-753, May. 2003

2003	Ki-Hyuk Lee, Hyun-Yong Choi, Woo-Young Choi
"Analysis of Chromatic Dispersion-Induced Second-Harmonic Distortions Including Laser Dynamics to the Second Order "
IEEE Journal of Quantum Electronics, Vol. 39, No. 5, pp.640-646, May. 2003

2003	Kwang-Hyun Lee, Yong-Sang Cho, Sangin Kim and Woo-Young Choi
"A Tunable-Output Wavelength Converter Based on a Self-Seeded Fabry-Perot Laser Diode with a Chirped Fiber Grating"
Microwave and Optical Technology Letters, Vol.37, No 1, pp.35-36, Apr. 2003

2002	Young-Kwang Seo, Chang-Soon Choi, Woo-Young Choi
All Optical Signal Up-Conversion for Radio-on-fiber Applications Using Cross-Gain Modulation in Semiconductor Optical Amplifiers
IEEE Photonics Technology Letters, Vol.14, No.10, pp.1448-1450, Oct. 2002

2002	Hyuk-Kee Sung, Young-Kwang Seo, Woo-Young Choi
" Reduction of Fiber Dispersion-Induced Third-Order Intermodulation Distortion with Injection-Locked Distributed Feedback Lasers "
Jpn. J. Appl. Phys, Vol.41, No.7B, pp.L825-L826, Jul. 2002

2002	C.-S. Choi, W.-Y. Choi, M.-H. Joo, J.-H. Song, and S. Im
" Optimum B+ Implantation Conditions for the edge Termination of the Au/n-Si Schottky Diodes "
J. Vac. Sci. Technol B, Mar. 2002

2002	Jun-Hyuk Seo,Young-Kwang Seo,Woo-Young Choi
" Nonlinear Distortion Suppression in Directly Modulated Distributed Feedback Lasers by Sidemode Optical Injection Locking "
Jpn. J. Appl. Phys., Vol.41, No.2A, pp.L136-L138, Feb. 2002

2001	Chang-Soon Choi, Kyung-Whan Kim and Woo-Young Choi
" Design and Analysis of Self-Aligned Asymmetric Structure for Deep Sub-micrometer MOSFET "
Solid-State Electronics, Vol. 45, No. 9, pp.1673-1678, Sep. 2001

2001	Young-Gwang Seo, A-Jung Kim, Jung-Tae Kim, and Woo-Young Choi
" Optical Generation of Microwave Signals Using a Directly Modulated Semiconductor Laser Under Modulated Light Injection "
Microwave and Optical Technology Letter, Vol. 30, No. 6, pp.369-370, Sep. 2001

2001	Yu-Gun Kim, Myoung-Su Lee and Woo-Young Choi
"A New Charge Pump PLL with Reduced Jitter"
IEICE Trans. Commun, Vol. E84-B, No. 6, pp.1680-1682, Jun. 2001

2001	Hyun-Do Jung, Gyu-Woong Lee, Sang-Kook Han, Woo-Young Choi
"Nonlinearity suppression of electroabsorption modulator through dual-parallel modulation"
Microwave and Optical Technology Letters, Vol. 9, No. 1, pp.2-5, Apr. 2001

2001	T.-S.Cheung, B.-C. Lee, E.-C. Choi and W.-Y. Choi
" A 1.8~3.2 GHz fully differential GaAs MESFET PLL "
IEEE Journal of Solid-State Circuits, Vol. 36, No. 4, pp.605-610, Apr. 2001

2001	Yong-Sang Cho and Woo-Young Choi
"Analysis and optimization of polarization-insensitive semiconductor optical amplifiers with delta-strained quantum wells"
IEEE Journal of Quantum Electronics, Vol. 37, No. 4, pp.574-579, Apr. 2001

2000	Seung-Woo Lee, Eun-Chang Choi, Sang-Kook Han, and Woo-Young Choi
"Modeling and analysis of optical interconnect systein using equavalent circuit models"
Optical Engineering, Vol. 39, No 12, pp.3191-3195, Dec. 2000

2000	Tae-sik Cheung, Bhum-Cheol Lee, Eun-Chang Choi, Woo-Young Choi
"Novel 2GHz Range Fully Differential GaAs MESFET Phase-Locked Loops"
Journal of Korean Physical Society, Vol. 37, No. 6, pp.816-821, Dec. 2000

2000	K.-W. Kim, C.-S. Choi, and W.-Y. Choi
" analysis of a Novel Self-Aligned Elevated Source Drain Metal-Oxide Semiconductor Field Effect Transistor with Reduced Gate Induced Drain Leakage Current and High Driving Capability "
Japanese Journal of Applied Physics, Vol. 39, No. 11, pp.6208-6211, Nov. 2000

2000	Young-Kwang Seo and Woo-Young Choi
" Frequency chirp analysis of injection-locked semiconductor lasers "
Microwave and Optical Technology Letters, Vol. 25, No. 6, pp.374-377, Jun. 2000

2000	M.H. Joo, K.M. Park, W.Y. Choi, J.H. Song, S. Im
"Enhancing the breakdown voltages of Au/n-Si Schottky diodes by boron ion beam-induced edge termination"
Nuclear Instruments and Methods in Physics Research B, Vol. 168, No. 3, pp.399-403, Jan. 2000

1999	Yongsang Cho, Wooyong Choi, Seok Lee, Sunho Ki
"Analysis of QW with strained thin layers for polarization-Insensitive semiconductor optical amplifiers"
Journal of Korean Physical Society, Vol. 34-S, pp.96-100, Apr. 1999

1998	Sang-O Jeon, Tae-Sik Cheung, and Woo-Young Choi
"Phase/frequency detectors for high-speed PLL applications"
Electronics Letters, Vol. 34, No. 22, pp.2120-2121, Oct. 1998

1997	崔 佑榮
"韓國の半導體敎育" (Invited Paper)"
電子情報通信學會誌 (Japan), Vol. 80, No. 10, pp.1013-1016, Oct. 1997

1996	W.-Y. Choi, J.C. Chen, and C.G. Fonstad
"Evaluation of coupling coefficients for laterally-coupled distributed feedback lasers"
Jap. J. of Appl. Phys., Vol. 35, Part 1, No. 9A, pp.4654-4659, Sep. 1996

1996	T.-S. Cheung, W.-Y. Choi, S.-D. Lee, J.-S. Yoon, and B.-R. Kim
--"Prediction of TDDB characteristics under constant current stresses"
Elect Lett., Vol. 32, No. 13, pp.1241-1242, Jun. 1996

1994	W.-Y. Choi and C.G. Fonstad
" Growth optimization of molecular-beam-epitaxy-grown InAlAs on InP "
J. Vac. Sci. Technol., B 12, No. 2, pp.1013-1015, Mar. 1994

1993	V.V. Wong, W.-Y. Choi, J.M. Carter, C.G. Fonstad, H.I. Smith, Y. Chung, and N. Dagli
"Ridge-waveguide sidewall-grating distributed feedback structures "
J. Vac. Sci. Technol., B 11, No. 6, pp.2621-2624, Nov. 1993

1993	Y. Hirayama, W.-Y. Choi, L.H. Peng, and C.G. Fonstad
Absorption spectroscopy on room temperature exciton transitions in strained layer InGaAs/InAlAs multiple quantum-well structures
J. Appl. Phys., Vol. 74, No. 1, pp.570-578, Jul. 1993

1993	Y. Hirayama, W.-Y. Choi, and C.G. Fonstad, Tech
" Optical study on exciton in InGaAs/InGaAlAs quantum well structures "
Report of IEICE, OQE93-42,, pp.21-26, Jul. 1993

1993	W.-Y. Choi and C.G. Fonstad
" Photoluminescence and x-ray diffraction studies of MBE-grown compressively strained InGaAs and InGaAlAs quantum wells for 1.55um laser diode applications "
Journal of Crystal Growth, Vol. 127, pp.555-559, Mar. 1993

1993	W.-Y. Choi, T.P.E. Broekaert, and C.G. Fonstad
MBE-GROWN lnGaAIAs 1.5 µm MQW RIDGE WAVEGUlDE LASER DIODES WITH AlAs ETCH STOP LAYERS
Elect. Lett., Vol. 29, No. 5, pp.483-485, Mar. 1993

1993	W.-Y. Choi and C.G. Fonstad
"Determination of the layer structure of embedded strained InGaAs multiple quantum wells by high resolution x-ray diffraction"
Appl. Phys. Letts, Vol. 62, No. 22, pp.2815-2817, Mar. 1993

1992	L.H. Peng, T.P.E. Broekaert, W.-Y. Choi, B.R. Bennett, J.H. Smet, V. Diadiuk, S.H. Groves, S.C. Palmateer, N. Pan, and C.G. Fonstad
"Mapping of the localized interface and surface states of InGaAs lattice matched to Fe-doped InP by infrared spectroscopy"
J. Appl. Phys., Vol. 72, No. 8, pp.3664-3669, Oct. 1992

1992	J.C. Vlcek, W.-Y. Choi and C.G. Fonstad
" Techniques and applications of graded-composition InGaAlAs Alloys "
J. Vac. Sci. Technol., B 10, No. 2, pp.822-824, Mar. 1992

1991	L.H. Peng, T.P.E. Broekaert, W.-Y. Choi, C.G. Fonstad, and V. Jones
"Defect activated infrared multiphonon excitation in iron-dopped semi-insulating indium phosphide"
Appl. Phys. Lett., Vol. 59, No. 5, pp.564-566, Jul. 1991