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2024	Jae-Ho Lee, Hyun-Kyu Kim, Minkyu Kim, Youngkwan Jo, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A 112-Gb/s Hybrid-Integrated Si Photonic WDM Receiver with Ring-Resonator Filters
IEEE SiPhotonics 2024, Tokyo, Japan, 15-18 April, 2024 (P)

2024	Jae-Ho Lee, Seung-Jae Yang, Myung-Jae Lee, and Woo-Young Choi
A Monolithically Integrated 20-Gb/s 850-nm optical receiver realized in 28-nm CMOS technology
SPIE Photonics West 2024, San Francisco, USA, 27 January - 1 February, 2024 (O)

2024	Min-Hyeok Seong, Yongjin Ji, Chul-Soon Im, Youngseok Bae, and Woo-Young Choi
A Simple but Accurate Linearity Model for Si Mach-Zehnder Modulators
SPIE Photonics West 2024, San Francisco, USA, 27 January - 1 February, 2024 (O)

2024	Kihun Kim and Woo-Young Choi
A 32-channel DAC-based Driver IC for Optical Phased Array
International Conference on Electronics, Information, and Communication(ICEIC), Taipei, Taiwan, 28-31 January, 2024 (O)

2023	Eunsung Park, Doyoon Eom, Joo-Hyun Kim, Hyuk An, Suhyun Yi, Kyung-Do Kim, Jongchae Kim, Hoon-Sang Oh, Woo-Young Choi, Myung-Jae Lee
Back-Illuminated SPAD in 40 nm CIS Technology Achieving 56 ps Timing Jitter With 15 V Breakdown Voltage for Short/Mid-Range LiDAR Applications
2023 IEEE International Electron Devices Meeting, San Francisco, USA, 9-13 December, 2023 (O)

2023	Dae-won Rho, Jae-Koo Park, Seung Jae Yang and Woo-Young Choi
A 80Gb/s/pin Sinlge-Ended PAM-4 Transmitter With an Edge Boosting Auxiliary Driver and a 4-Tap FFE in 28-nm CMOS
2023 IEEE Asian Solid-State Circuits Conferece(A-SSCC), Hainan, China, 5-8 November, 2023 (O)

2023	Eunsung Park, Won-Yong Ha, Doyoon Eom, Dae-Hwan Ahn, Hyuk An, Suhyun Yi, Kyung-Do Kim, Jongchae Kim, Woo-Young Choi, Myung-Jae Lee
Doping-Optimized Back-illuminated Single-Photon Avalanche Diode in Stacked 40 nm CIS Technology Achieving 60% PDP at 905 nm
Symposium on VLSI Technology and Circuits, Kyoto, Japan, 11-16 June, 2023 (O)

2023	Dae-won Rho, Jae-Koo Park, Seung Jae Yang and Woo-Young Choi
A 40Gb/s/pin Single – Ended Transmitter with Output pad Network for Memory Interface Application in 28-nm CMOS
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 25-28 October, 2023 (O)

2023	Sung-Han Jeon, Dae-Hwan Ahn, Woo-Young Choi, Jae-Hoon Han
Responsivity Enhancement of In0.53Ga0.47As Photo-FET Fabricated by Wafer Bonding on Si Substrate via Cavity Effect and EOT Scaling
Compound Semiconductor Week 2023 (CSW 2023), Jeju, Korea, May 29 – June 2, 2023 (O)

2023	Youngkwan Jo, Yongjin Ji, Minkyu Kim, Hyun-Kyu Kim, Min-Hyeong Kim, Stefan Lischke, Christian Mai, Lars Zimmermann and Woo-Young Choi
A Si Photonic BiCMOS Coherent QPSK Transmitter Based on Parallel-Dual Ring Modulators
IEEE SiPhotonics 2023, Arlington, VA, USA, 4-7 April, 2023 (O)

2023	Hyun-Kyu Kim, Yongjin Ji, Min-Hyeok Seong, Kihun Kim and Woo-Young Choi
Automated Calibration of MZI-based Si Optical Switch Matrix
SPIE Photonics West, San Francisco, California, USA, 28 January-2 February, 2023 (P)

2022	Daesik Moon, Sangwoo Lee, Taewoong Kim, Woo-Young Choi, Youngcheol Chae
A 6-bit 5.12-GS/s Flash ADC with Track-and-Hold Embedded Dynamic Preamplifier in 28nm CMOS
IEEE Asian Solid-State Circuits Conference, Taipei, Taiwan, 6-9, November, 2022 (O)

2022	Eunsung Park, Won-Yong Ha, Dae-Hwan Ahn, Hyuk An, Suhyun Yi , Kyung-Do Kim , Jongchae Kim , Woo-Young Choi, Myung-Jae Lee
Back-Illuminated SPADs in Stacked 40nm CIS Technology (Invited)
The International SPAD Sensor Workshop 2022, online conference, 13 - 15 June, 2022 (O)

2021	Youngkwan Jo, Yongjin Ji, Minkyu Kim, Stefan Lischke, Christian Mai, Lars Zimmermann and Woo-Young Choi
Parametric Monte-Carlo Characterization of Si Ring Modulators
IEEE Group IV Photonics (GFP), Virtual Conference, 7-10 December, 2021 (O)

2021	Seung-Min Han, Dae-Won Rho, Dae-Hwan Ahn, Jin-Dong Song, Woo-Young Choi and Jae-Hoon Han
Non-Volatile Operation of a Si PN Ring Resonator with a Ferroelectric Capacitor
Optical Fiber Communications Conference (OFC), Virtual Conference, 6-10 June, 2021 (P)

2020	Daewon Rho, Minkyu Kim, Hyun-Kyu Kim and Woo-Young Choi
Performance Optimization of Silicon Photonic Ring Switch with CMOS Driver
International SoC Design Conference (ISOCC), Yeosu, South Korea, 21-24 October, 2020 (O)

2020	Minkyu Kim, Min-Hyeong Kim, Youngkwan Jo, Hyun-Kyu Kim, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
A Fully Integrated 25 Gb/s Si Ring Modulator Transmitter with a Temperature Controller
Optical Fiber Communications Conference (OFC), San Diego, California, USA, 8-12 March, 2020 (O)

2020	Minkyu Kim, Stefan Lischke, Christian Mai, Lars Zimmermann, and Woo-Young Choi
An Accurate and Computationally Efficient Large-signal SPICE Model for Depletion-type Silicon Ring Modulators Including Temperature Dependence
The European Conference on Optical Communication (ECOC), Brussel, Belgium, 6-10 December (O)

2020	Hyun-Kyu Kim, Youngkwan Jo, Minkyu Kim, Hyun-Yong Jung, Christian Mai, Stefan Lischke, Lars Zimmermann and Woo-Young Choi
A Monolithically Integrated 2 × 25-Gb/s Si Photonic WDM Receiver with Thermally-Tunable Ring-Resonator Filters
SPIE Photonics West, San Francisco, California, USA, 1-6 February, 2020 (O)

2019	Minuk Seung, Wooyoung Choi, Seop Hur and Inyong Kwon
Design of a Voltage Subtraction Bandgap Reference Circuit for Radiation Hardening
the 2019 IEEE Nuclear Science Symposium (NSS) and Medical Imaging Conference (MIC), Manchester, UK, 26th of October to the 2nd of November, 2019

2019	Woo-Young Choi, Min-Hyeong Kim, Minkyu Kim, Christian Mai, Stefan Lischke, Lars Zimmermann
Temperature-Controlled Si Ring Modulators (Invited Paper)
SPIE Photonics Asia, Hangzhou, China, 20-23 Oct., 2019 (O)

2019	Minkyu Kim, Kangyeob Park, Won-Seok Oh, Christian Mai, Stefan Lischke, Lars Zimmermann, and Woo-Young Choi
A 4x25-Gbps Monolithically Integrated Si Photonic WDM Transmitter with Ring Modulators
IEEE Optical Interconnects Conference, Santa Fe, New Mexico, USA, 24-26 April, 2019 (O)

2019	Jung-Tack Yang, Younghyun Kim, Jae-Bong Lee, Dong-Soo Bang, Tae-Kyung Kim and Woo-Young Choi
Dependence of High-Power Laser Diode Performance on Emitter Width
SPIE Photonics West, San Francisco, California, USA, 2-7 Feb, 2019 (O)

2019	Youngkwan Jo, Byung-Min Yu, Christian Mai, Stefan Lischke, Lars Zimmerman and Woo-Young Choi
Modulation linearity analysis of depletion-type Si Ring Modulator
SPIE Photonics West, San Francisco, California, USA, 1-7 Feb, 2019 (O)

2018	Woo-Young Choi, Byung-Min Yu, Jeong-Min Lee, Christian Mai,Stefan Lischke, and Lars Zimmermann
Si Electronic-photonic Integrated Circuits for Realization of Single-chip Optical Single-sideband Modulators (Invited Paper)
Progress In Electromagnetics Research Symposium (PIERS) / Toyama, Japan / 1-4 August (O)

2018	Min-Hyeong Kim, Lars Zimmermann, and Woo-Young Choi
A Wavelength Stabilization Integrated Circuit for 25-Gb/s Si Micro-Ring Modulator
OptoElectronics and Communications Conference (OECC), Jeju, Korea, 2-6 July, 2018 (O)

2018	Woo-Young Choi, Minkyu Kim, Myungjin Shin, Byung-Min Yu, Christian Mai, Stefan Lischke, and Lars Zimmermann
Modeling Depletion-Type Si Ring Modulators (Invited Paper)
OptoElectronics and Communications Conference (OECC), Jeju, Korea, 2-6 July, 2018 (O)

2018	Minkyu Kim, Myungjin Shin, Min-Hyeong Kim, Byung-Min Yu, Christian Mai, Stefan Lischke, Lars Zimmermann and Woo-Young Choi
A Large-signal Equivalent Circuit for Depletion-type Silicon Ring Modulators
OFC, San Diego, USA, 11-15 March, 2018 (P)

2018	Younghyun Kim, Yunsu Sung, Jung-Tack Yang, Woo-Young Choi
Simulation of high-power laser diode with improved heat sinking structure using epitaxial liftoff technique
SPIE Photonics West, San Francisco, US, Jan 27 - Feb 1, 2018 (O)

2017	Byung-Min Yu, Jeong-Min Lee, Christian Mai, Stefan Lischke, Lars Zimmermann, and Woo-Young Choi
A Monolithically Integrated Si Optical Single-Sideband Modulator
IEEE Group Four Photonics, Berlin, Germany, 23-25 Aug. 2017 (O)

2017	Hyun-Yong Jung, Jeong-Min Lee, Minkyu Kim, Stefan Lischke, Dieter Knoll, Lars Zimmermann, Woo-Young Choi
A Monolithically Integrated 25-Gb/s Optical Receiver Based on Photonic BiCMOS Technology
The 12th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), The 22nd OptoElectronics and Communications Conference (OECC), and the 5th Photonics Global Conference (PGC), Singapore, 31st Jul - 4th Aug., 2017 (P)

2017	Woo-Young Choi, Myungjin Shin, Byung-Min Yu, and Lars Zimmnermann
Self-heating in Depletion-Type Si Ring Modulators (Invited Paper)
The 12th Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), The 22nd OptoElectronics and Communications Conference (OECC), and the 5th Photonics Global Conference (PGC), Singapore, 31st Jul - 4th Aug., 2017 (O)

2017	Dae-Hyun Kwon, Hyun-Yong Jung, Jeong-Min Lee and Woo-Young Choi
An Asymmetrically-Sampling 10-Gb/s CDR Circuit for Optical Receiver Performance Enhancement
International Conference on Electronics, Information, and Communication (ICEIC), Phuket, Thailand, 11-14 January, 2017 (O)

2016	Ki-Hyun Pyun, Dae-Hyun Kwon, and Woo-Young Choi
A 3.5/7.0/14-Gb/s Multi-Rate Clock and Data Recovery Circuit with a Multi- Mode Rotational Binary Phase Detector
IEEE Asia Pacific Conference on Circuits and Systems, Jeju, Korea, 25 -28, October, 2016 (O)

2016	Myungjin Shin, Byung-Min Yu, Lars Zimmermann and Woo-Young Choi
Parametric Characterization of Self-Heating in Si Micro-Ring Modulators
IEEE International Conference on Group IV Photonics, Shanghai, China, 24-26, August, 2016 (O)

2016	S. Lischke, D. Knoll, C. Mai, M. Kroh, D. Schmidt, A. Peczek, J. KreiBl, Jeong-Min Lee, Minkyu Kim, Woo-Young Choi, and Lars Zimmermann
Design Effects on the Performance of High-Speed Ge Photo Detectors
IEEE International Conference on Group IV Photonics, Shanghai, China, 24-26, August, 2016 (O)

2016	Ki-Hyun Pyun, Dae-Hyun Kwon, and Woo-Young Choi
Multi-Rate Clock and Data Recovery Circuit For Display Interface
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 23 - 26 October 2016 (P)

2016	Sung-Geun Kim, Tongsung Kim, Dae-Hyun Kwon, and Woo-Young Choi
A 5-8 Gb/s Low-Power Transmitter with 2-Tap Pre-Emphasis Based on Toggling Serialization
IEEE Asian Solid-State Circuits Conference, Toyama, Japan, 7-9 Nov., 2016 (O)

2016	Jeong-Min Lee, Minkyu Kim, Stefan Lischke, Lars Zimmernman, Seong-Ho Cho, and Woo-Young Choi
Photodetection Frequency Response Characterization for High-Speed Ge-PD on Si With an Equivalent Circuit
21st Optoelectronics and Communications Conference/International Conference on Photonics in Switching 2016, Niigata, Japan, 3-7 July, 2016 (P)

2016	Jinsoo Rhim, Byung-Min Yu, Jeong-Min Lee, Seong-Ho Cho, and Woo-Young Choi
Modulation Performance Optimization for Depletion-Type Silicon Micro-Ring Modulators
IEEE Optical Interconnects Conference 2016, San Diego, California USA, 9 - 11 May 2016 (P)

2016	Woo-Young Choi, Myungjin Shin, Jeong-Min Lee, Lars Zimmermann
Equivalent Circuit Models for Silicon Photonics Devices (Invited Paper)
Asia Communications and Photonics Conference (ACP), Wuhan, China, 2-5 November, 2016 (O)

2016	Min-Hyeong Kim, Hyun-Yong Jung, and Woo-Young Choi
An integrated Mach-Zehnder modulator bias controller based on eye-amplitude monitoring
SPIE Photonics West, San Francisco, USA, 13-18 Feb, 2016 (O)

2015	Hyun-Yong Jung, Jeong-Min Lee, Woo-Young Choi
A High-Speed CMOS Integrated Optical Receiver with an Under-Damped TIA
IEEE Photonics Conference, Reston, USA, 4-8 October, 2015 (O)

2015	Yoojin Ban, Byung-Min Yu, Jinsoo Rhim, Jeong-Min Lee, and Woo-Young Choi
Modeling of self-heating effect for depletion-type Si micro-ring modulator
Optical Interconnects Conference, San Diego, USA, 20-22 April, 2015 (O)

2015	Sung-Geun Kim, Jinsoo Rhim, Dae-Hyun Kwon, Min-Hyeong Kim, and Woo-Young Choi
A Low-Voltage PLL with a Current Mismatch Compensated Charge Pump
International SoC Design Conference, Gyeongju, Korea, 2-5 November, 2015 (O)

2014	Kang-Yeob Park, Hyun-Yong Jung, and Woo-Young Choi
A bandwidth-tunable optical receiver
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 3-6 November, 2014 (P)

2014	Hyun-Yong Jung, Jeong-Min Lee, Jin-Sung Youn, and Woo-Young Choi
12.5-Gb/s Monolithic Optical Receiver with CMOS Avalanche Photodetector
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 3-6 November, 2014 (P)

2014	Hyun-Yong Jung, Jeong-Min Lee, Jin-Sung Youn, Woo-Young Choi, and Myung-Jae Lee
12.5-Gb/s Monolithically Integrated Optical Receiver with CMOS Avalanche Photodetector
International SoC Design Conference, Jeju, Korea, 3-6 November, 2014 (O)

2014	Joung-Wook Moon, Sung-Geun Kim, Dae-Hyun Kwon, and Woo-Young Choi
A 0.4-V, 500-MHz, Ultra-Low-Power Phase-Locked Loop for Near-Threshold Voltage Operation
Custom Integrated Circuits Conference, San Jose, USA, 15-17 Sep., 2014 (P)

2014	Jeong-Min Lee and Woo-Young Choi
An Equivalent Circuit Model for Germanium Waveguide Vertical Photodetectors on Si
International Topical Meeting on Microwave Photonics / The 9th Asia-Pacific Microwave Photonics Conference (MWP / APMP 2014) 2014, Sapporo, Japan, 20-23 Oct., 2014 (P)

2014	Jinsoo Rhim, Yoojin Ban, Jeong-Min Lee, Seong-Ho Cho, and Woo-Young Choi
A Behavior Model for Silicon Micro-Ring Modulators and Transmitter Circuit-Level Simulation Using It
IEEE International Conference on Group IV Photonics, Paris, France, 27-29 August, 2014 (O)

2014	Byung-Min Yu, Jeong-Min Lee, Yoojin Ban, Seong-Ho Cho, Woo-Young Choi
Model Parameter Extraction for Si Micro-Ring Modulators
Optoelectronics and Communications Conference(OECC), Melbourne, Australia, 6-10 July, 2014 (P)

2014	Woo-Young Choi
Si Photonics for More-than-Moore Si Electronics (Invited)
Nano Korea 2014, Seoul, Korea, 2-4 July, 2014 (O)

2014	Yoojin Ban, Jeong-Min Lee, Byung-Min Yu, Seong-Ho Cho, and Woo-Young Choi
Small-Signal Frequency Responses for Si Micro-Ring Modulators
IEEE Optical Interconnects Conference, Coronado, USA, 4-7 May, 2014 (P)

2013	Joung-Wook Moon, Kwang-Chun Choi, Min-Hyeong Kim, and Woo-Young Choi
A Spur free 0.4-V 88-uW 200-MHz Phase-Locked Loop
International SoC Design Conference, Jeju, Korea, 17-19 November, 2013 (O)

2013	Jinsoo Rhim and Woo-Young Choi
A 12.5-Gb/s Optical Modulator Driver in 65-nm CMOS Technology
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 17-19 November, 2013 (P)

2013	Jin-Sung Youn, Myung-Jae Lee, Wang-Soo Kim, Kang-Yeob Park and Woo-Young Choi
An 8.7-mW 7-Gb/s CMOS OEIC Receiver
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 17-19 November, 2013 (P)

2013	Wang-Soo Kim and Woo-Young Choi
A 5-Gb/s Adaptive Equalizer & Duty-Cycle Corrector Using Asynchronous Under-Sampling Histogram
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 17-19 November, 2013 (P)

2013	Joung-Wook Moon, Kwang-Chun Choi and Woo-Young Choi
A 0.4-V 88-uW 200-MHz PLL with reduced reference spurs
International SoC Design Conference - Chip Design Contest, Jeju, Korea, 17-19 November, 2013 (P)

2013	Yoojin Ban, Jeong-Min Lee, and Woo-Young Choi
A Small-Signal Model for Modulation Response of a Silicon Ring Modulator
The 10th International Conference on Group IV Photonics(GFP), Seoul, Korea, 28-30 August, 2013 (P)

2013	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
An Equivalent Circuit with a Noise Source for 850-nm Si Avalanche Photodetector and Optimal Design of Si OEIC Receiver
The 10th Conference on Lasers and Electro-Optics Pacific Rim, and The 18th OptoElectronics and Communications Conference/Photonics in Switching (CLEO-PR & OECC/PS) 2013, Kyoto, Japan, 30 June - 4 July, 2013 (P)

2013	Minsu Ko, Jeong-Min Lee, Myung-Jae Lee, and Woo-Young Choi
A 5-GHz CMOS Integrated Radio-Over-Fiber Receiver
The 8th Asia-Pacific Microwave Photonics Conference (APMP 2013), Gwangju, Korea, 22-24 Apr. 2013 (P)

2012	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
Bit-Error Rate Analysis of Integrated Optoelectronic Receiver
Photonics Global Conference (PGC) 2012, Singapore, 13-16, Dec. 2012

2012	Jinsoo Rhim, Kwang-Chun Choi, and Woo-Young Choi
A 10-Gb/s Power and Area Efficient Clock and Data Recovery Circuit in 65-nm CMOS Technology
International SoC Design Conference, Jeju, 4-7 Nov. 2012

2012	Jeong-Min Lee, Holger Rücker, and Woo-Young Choi
60-GHz Voltage-Controlled Oscillator and Frequency Divider in 0.25-μm SiGe BiCMOS Technology
International SoC Design Conference, Jeju, 4-7 Nov. 2012

2012	Minsu Ko, Myung-Jae Lee, Holger Rücker, and Woo-Young Choi
Investigation of Optimal Silicon Avalanche Photodiode Pairs for 60-GHz Balanced Subharmonic Optoelectronic Mixers
Asia-Pacific Microwave Photonics Conference (APMP 2012), Kyoto, Japan, 25-27 Apr. 2012

2012	Jin-Sung Youn, Myung-Jae Lee, Kang-Yeob Park, Holger Rucker, and Woo-Young Choi
A 12.5-Gb/s SiGe BiCMOS Optical Receiver with a Monolithically Integrated 850-nm Avalanche Photodetector
OFC/NFOEC, Los Angeles, California, USA, 6-8 Mar. 2012

2011	Jinsoo Rhim and Woo-Young Choi
A 5-Gb/s Low-Power Transmitter with Voltage-Mode Output Driver in 90nm CMOS Technology
International SoC Design Conference, Jeju, 17-18 Nov. 2011

2011	Myung-Jae Lee, Jin-Sung Youn, Holger Ruecker, and Woo-Young Choi
A Monolithically Integrated Optical Receiver With a Silicon Avalanche Photodetector for Fiber-Wireless IEEE 802.11 WLAN Applications
IEEE International Topical Meeting on Microwave Photonics, Singapore, 18-21 Oct. 2011

2011	Young-Seok Park and Woo-Young Choi
Supply Noise Insensitive Ring VCO with On-Chip Adaptive Bias-Current and Voltage-Swing Control
International Symposiums on Circuits And Systems, pp.229-232, May. 2011

2011	Wang-Soo Kim, Chang-Kyung Seong, Woo-Young Choi
A 5.4Gb/s Adaptive Equalizer Using Asynchronous-Sampling Histograms
International Solid-State Circuits Conference, Sanfrancisco, USA, 20-24, February. 2011

2010	Woo-Young Choi
CMOS Optoelectronic Mixers for Fiber-fed Wireless Systems (Invited Paper)
Photonics Global Conference, Suntec, Singapore, 14-16, Dec. 2010

2010	Duho Kim, Minsu Ko, Kwang-Chun Choi, and Woo-Young Choi
A 4.8-Gb/s Mixed-mode CMOS QPSK Demodulator For 60-GHz Wireless Personal Area Networks
IEEE Asia Pacific Conference on Circuits and Systems, Kuala Lumpur, Malaysia, 6-9 December, 2010

2010	Duho Kim, Kwang-chun Choi, Young-seok Park, Wang-soo Kim, Jinsoo Rhim and Woo-Young Choi
4-Channel 3.2/6.4-Gbps Dual-rate Transmitter
International SoC Design Conference, Chip Design Contest, November 2010

2010	Jin-Sung Youn and Woo-Young Choi
6.25-Gb/s Optical Receiver Analog Front-End in a 0.13um CMOS Technology
International SoC Design Conference, Chip Design Contest, November 2010

2010	Jinsoo Rhim, Chang-kyung Seong, Wang-soo Kim, and Woo-Young Choi
1.62 and 2.7 Gb/s Dual-rate Adaptive Equalizer
International SoC Design Conference, Chip Design Contest, November 2010

2010	Jae-Young Kim, Myung-Jae Lee and Woo-Young Choi
60GHz CMOS-APD Optoelectronic Mixers with Optimized Conversion Efficiency
IEEE International Topical Meeting on Microwave Photonics, Montreal, Quebec, Canada, 5-9 Oct. 2010

2010	Woo-Young Choi, Myung-Jae Lee, and Jin-Sung Youn
Si Integrated Photoreceivers (Invited Paper)
Bipolar/BiCMOS Circuits and Technology Meeting (BCTM), Austin, Texas, USA, 4-6 October, 2010

2010	Woo-Young Choi, Myung-Jae Lee, and Jin-Sung Youn
CMOS-Compatible Si Avalanche Photodetectors (Invited Paper)
Asia-Pacific Radio Science Conference (AP-RASC), Toyama, Japan, 22-26 September, 2010

2010	Woo-Young Choi, Jae-Young Kim and Myung-Jae Lee
Invited Paper "Optoelectronic Mixers for Fiber-fed 60-GHz Wireless Systems"
Asia-Pacific Microwave Photonics Conference (APMP), HongKong, China, 26-28 April 2010

2010	Minsu Ko, Holger Ruecker, and Woo-Young Choi
A 53-64-GHz SiGe Up-Conversion Mixer with 4-GHz IF Bandwidth
10th Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF), New Orleans, USA, 11-13 Jan. 2010

2009	Young-Seok Park, Pyung-Su Han, and Woo-Young Choi
Linear Analysis and Speed Optimization of Feedforward Ring Oscillators
12th International Symposium on Integrated Circuits(ISIC), Singapore, Singapore, 14-16 Dec. 2009

2009	Myung-Jae Lee, Jin-Sung Youn, Hyo-Soon Kang, Duho Kim, Minsu Ko, Kang-Yeob Park, and Woo-Young Choi
622-Mb/s Downlink Transmission in a Fiber-Fed 60-GHz Wireless System Using a CMOS Integrated Optical Receiver
IEEE International Topical Meeting on Microwave Photonics, Valencia, Spain, 14-16 Oct. 2009

2009	Jin-Sung Yoon, Hyo-Soon Kang, Myung-Jae Lee, Kang-Yeob Park, and Woo-Young Choi
CMOS Integrated Optical Receivers for Radio-over-Fiber Transmission of IEEE 802.11g WLAN Signals
Asia-Pacific Microwave Photonics Conference (APMP), Beijing, China, 22-24 April 2009

2008	Kwang-Chun Choi, Duho Kim, Minsu Ko and Woo-Young Choi
1-Gb/s Mixed-mode BPSK Demodulator Using a Half-rate Linear Phase Detector for 60-GHz Wireless PAN Applications
IEEE Asian Solid-State Circuits Conference, pp. 357-360, 12-6 Nov. 2008

2008	Hyo-Soon Kang, Myung-Jae Lee, and Woo-Young Choi
Multi-Standard Radio-over-Fiber Systems Using CMOS-Compatible Si Avalanche Photodetectors
IEEE Topical Meeting on Microwave Photonics, pp. 302-305, Gold Coast, Australia, Sep. 30 - Oct. 3, 2008

2008	Woo-Young Choi and Hyo-Soon Kang
CMOS-Compatible Si Avalanche Photodetectors for Microwave Photonics Applications (Invited Paper)
Joint Conference of Opto-Electronics and Communications Conference and the Australian Conference on Optical Fiber Technology (OECC/ACOFT), WeP-01, Sydney, Australia, 7-10 July, 2008

2008	Chang-Kyung Seong, Seung-Woo Lee, and Woo-Young Choi
Precise Network Synchronization Technique Using Phase Adjustment and External Filtering
International Conference on Electonics, Information, and Communication

2008	Minsu Ko, Hyo-Soon Kang, and Woo-Young Choi
A CMOS-Compatible Schottky-Barrier Diode Detector for 60-GHz Amplitude-Shift Keying (ASK) Systems
IEEE MTT-S International Microwave Symposium, pp.1557-1560, Atlanta, USA., 15-20 June, 2008

2008	Myung-Jae Lee, Hyo-Soon Kang, Kwang-Hyun Lee, and Woo-Young Choi
Fiber-Fed 60-GHz Self-Heterodyne System Using a Self-Oscillating Harmonic Optoelectronic Mixer Based on a CMOS-Compatible APD
IEEE MTT-S International Microwave Symposium, pp.587-590, Atlanta, USA., 15-20 June, 2008

2008	Hyo-Soon Kang, Myung-Jae Lee, and Woo-Young Choi
Radio-Over-Fiber Systems for WLAN Based on CMOS-Compatible Si Avalanche Photodetectors
IEEE MTT-S International Microwave Symposium, pp.503-506, Atlanta, USA., 15-20 June, 2008

2008	Jae-Young Kim and Woo-Young Choi
Fiber-fed wireless systems based on remote up-conversion techniques
IEEE Radio and Wireless Symposium, Workshop on Radio over Fiber Technologies, 21 January 2008, Orando, FL, USA

2007	Duho Kim, Young-kwang Seo, Hyunchin Kim and Woo-young Choi
A 622Mb/s BPSK Demodulator with Mixed-mode Demodulation Scheme
IEEE Asian Solid-State Circuits Conference, pp. 288-291, 12-14 Nov. 2007

2007	Duho Kim, Kwang-chun Choi, Young-kwang Seo, Hyunchin Kim, and Woo-young Choi
Mixed-mode BPSK Demodulator
Chip Design Contest (2007 International SoC Design Conference), COEX Conference Center, Seoul, Korea, 15-16 Oct., 2007

2007	Kwang-Hyun Lee, Jae-Young Kim, and Woo-Young Choi
Hybrid Dual-Loop Optoelectronic Oscillators
MWP2007, pp. 74-77, The Empress, Victoria, Canada, Oct. 03-05, 2007

2007	K. Park, W. S. Oh, S. C. Lee and Woo-Young Choi
A 12-Ch 60-Gb/s Advanced Common-Gate Trans-Impedance Amplifier Array
The 22nd International Technical Conference on Circuits/Systems, Computers and Communications, pp. 105-106, July 8-11, 2007

2007	Hyo-Soon Kang, Myung-Jae Lee and Woo-Young Choi
Characterization of Silicon Avalanche Photodetectors Fabricated in Standard CMOS process
Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PR), pp. 614-615, COEX, Seoul, Korea, Aug. 26-31, 2007

2007	Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
Optically Injection-locked Self-oscillating HBT MMIC Optoelectronic Mixer for Bi-directional Fiber-fed Wireless Links
IEEE MTT-S International Microwave Symposium, pp. 237-240, 3-8 June, 2007

2007	Hyo-Soon Kang, and Woo-Young Choi
CMOS-compatible 60 GHz Harmonic Optoelectronic Mixer
IEEE MTT-S International Microwave Symposium, pp. 233-236, Honolulu, USA, 3-8 June, 2007

2007	Kwang-Hyun Lee, Woo-Young Choi, Young-Ahn Leem, Kwang-Seong Choi, Hyunsung Ko, and Kyung-Hyun Park
Harmonic Frequency Up-Converters Based on Actively Mode-Locked Multi-Section DFB Lasers for 60 GHz Radio-on-Fiber Systems
AP-MWP2007, pp 151-153, The Suite Hotel, JeJu Island, Korea, April 25-27, 2007

2007	Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
30GHz-band Radio-on-fiber downlink data transmission using InP HPT-based MMIC OIL-SOM
AP-MWP2007, pp 85-88, The Suite Hotel, JeJu Island, Korea, April 25-27, 2007

2007	Kwang-Hyun Lee and Woo-Young Choi
Millimeter-wave Harmonic Frequency Up-Conversion Using Selective Sideband Brillouin Amplification
OFC/NFOEC, OWN6, Anaheim, California, USA, March 25-29, 2007

2007	Woo-Young Choi and Jae-Young Kim
Invited paper, "Technologies for Fiber-fed 60GHz Wireless Systems"
OFC/NFOEC, OWN1, Anaheim, California, USA, March 25-29, 2007

2006	Jae-Young Kim, Woo-Young Choi, Hideki Kamitsuna, Minoru Ida and Kenji Kurishima
Invited paper, "60GHz RoF Systems Using Remote Up-conversion Technique based on HBT Optoelectronic Mixers"
Australian workshop on microwave photonics, Melbourne, Australia, Dec. 8, 2006

2006	Pyung-Su Han and Woo-Young Choi
A 5-Gb/s Half-Rate Clock Recovery Circuit
Chip Design Contest (2006 International SoC Design Conference), COEX Conference Center, Seoul, Korea, 26-27 Oct., 2006

2006	Pyung-Su Han and Woo-Young Choi
A 5-Gb/s Half-rate clock recovery circuit in 0.25-um CMOS technology
2006 International SoC Design Conference, COEX Conference Center, Seoul, Korea, 26-27 Oct, 2006

2006	Kwang-Chun Choi, Pyung-Su Han, and Woo-Young Choi
1-Gb/s CMOS Low-Voltage Differential Signaling Receiver and Fail-Safe Circuit for Display Applications
ISOCC 2006, COEX Conference Center, Seoul, Korea, 26~27 Oct., 2006

2006	Duho Kim, Woo-young Choi, Young-kwang Seo and Hyunchin Kim
A Novel BPSK Demodulating SchemeUsing a Half-rate Bang-bang Phase Detector
ISOCC 2006, COEX Conference Center, Seoul, Korea, 26~27 Oct., 2006

2006	Hyo-Soon Kang, and Woo-Young Choi
Millimeter-wave Optoelectronic Mixers Based on CMOS-Compatible Si Photodetectors
International Topical Meeting on Microwave Photonics, T1-5, Genoble, France Oct. 4-6, 2006

2006	Seung-Woo Lee, Chang-Kyung Seong, Woo-Young Choi, and Bhum-Cheol Lee
Clock and Data Recovery Circuit Using Digital Phase Aligner and Phase Interpolator
49th IEEE International Midwest Symposium on Circuits and Systems, San Juan, PR, Aug. 6-9, 2006

2006	Hyo-Soon Kang, and Woo-Young Choi
Bias Voltage Optimization of Vertical PN-Junction Photodetectors Fabricated in Standard CMOS Technology
International Conference on Electronics, Information, and Communication (ICEIC) pp. 340-343, Ulaanbaatar, Mongolia, June 27-28, 2006

2006	Woo-Young Choi
High-Speed InP Transistors for Microwave-Photonic Signal Transmission
IEEE MTT-S International Microwave Symposium, Workshop on

2006	Jun-Hyuk Seo, and Woo-Young Choi
Gigabit Transmission in 60-GHz-Band Using Optical Frequency Up-Conversion by Semiconductor Optical Amplifier and Photodiode Configuration
IEEE MTT-S International Microwave Symposium, pp. 22-25, June 11-16, 2006

2006	Pyung-Su Han and Woo-Young Choi
1.25/2.5-Gb/s Burst-Mode Clock Recovery Circuit with a Novel Dual Bit-Rate Structure in 0.18-um CMOS
International Symposium on Circuits and Systems, Kos island, Greece, May 21-24, 2006, pp.3069-3072

2006	Chang-Kyung Seong, Seung-Woo Lee, and Woo-Young Choi
An 1.25-Gb/s Digitally-Controlled Dual-Loop Clock and Data Recovery Circuit with Enhanced Phase Resolution
International Symposium on Circuits and Systems, Kos, Greece, May 21-24, 2006

2006	Kwang-Hyun Lee, Woo-Young Choi, Young-Ahn Leem, Kyung-Hyun Park
All Optical Harmonic Frequency Up-converters Based on Self-pulsating Multi-section DFB Lasers for 60GHz RoF Down-link Systems
AP-MWP2006, C-38, Kobe, Japan, April 24-26, 2006

2006	Jae-Young Kim, Jun-Hyuk Seo, Woo-Young Choi, H. Kamitsuna, Minoru Ida and Kenji Kurishima
60GHz Radio-on-Fiber systems using optically injection-locked self oscillating optoelectronic mixers based on InP/InGaAs HPTs
OFC/NFOEC OWG6, Anaheim, California, USA, March 5-10, 2006.

2005	Pyung-Su Han and Woo-Young Choi
1.25/2.5-Gb/s Dural Bit-Rate Burst-Mode Clock Recovery Circuit Using Gate-Oscillators
2005 International SoC Design Conference, pp.251-255, COEX Conference Center, Seoul, Korea, 20-21, Oct., 2005

2005	Du-ho Kim, Pyung-su Han, Woo-Young Choi
Interpolating-Gated-Oscillator CDR
ISOCC2005 Chip Design Contest, pp.235-238, COEX Conference center, Seoul, Korea, Oct. 20-21, 2005

2005	Jun-Hyuk Seo, Chang-Soon Choi, *Young-Shik Kang, *Yong-Duck Chung, *Jeha Kim, and Woo-Young Choi *ETRI
Conversion Efficiency of EAM Optoelectronic Frequency Down-Convertors
General Assembly of International Union of Radio Science, CP2, New Delhi, India, Oct. 23-29, 2005

2005	Du-ho Kim, Pyung-su Han and Woo-Young Choi
A Novel Gated-Oscillator CDR with Robustness to Duty Cycle Distortion
International SOC desing conference, pp.235-238, COEX Conference center, Seoul, Korea, Oct. 20-21, 2005

2005	Chang-Kyung Seong, *Seung-Woo Lee, and Woo-Young Choi *ETRI
An 1.25-Gb/s Digitally-Controlled Dual-Loop Clock and Data Recovery Circuit with Improved Phase Resolution
International SOC desing conference, pp. 247-250, COEX Conference center, Seoul, Korea, Oct. 20-21, 2005

2005	Chang-Soon Choi, Jae-Young Kim, Woo-Young Choi, *Hideki Kamitsuna, *Minoru Ida, and *Kenji Kurishima* *NTT Photonics Laboratories
Millimeter-wave InP/InGaAs HPT optoelectronic mixers and their application to 60GHz bi-directional radio-on-fiber systems
International Topical Meeting on Microwave Photonics, pp. 333-336, Seoul, Oct. 12-14, 2005

2005	Jun-Hyuk Seo, Chang-Soon Choi, *Young-Shik Kang, *Yong-Duck Chung, *Jeha Kim, and Woo-Young Choi *ETRI
Conversion Efficiency Characteristics of Cascaded SOA-EAM Frequency Up/Down-Converters
International Topical Meeting on Microwave Photonics, pp.107-110, Seoul, Oct. 12-14, 2005

2005	Chang-Soon Choi, Jun-Hyuk Seo, Woo-Young Choi, *H. Kamitsuna, *Minoru Ida and *Kenji Kurishima *NTT Photonics Laboratories, Japan
Radio-on-fiber downlink transmission systems based on optically controlled InP/InGaAs HPT oscillators
IEEE MTT-S International Microwave Symposium, pp.11-14, June, Long Beach, USA, 2005

2005	Jun-Hyuk Seo, Chang-Soon Choi, Young-Shik Kang*, Yong-Duch Chung*, Jeha Kim*, and Woo-Young Choi *ETRI
Bi-directional 60 GHz Radio-on-Fiber Systems using Cascaded SOA-EAM Frequency Up/Down-converters
IEEE MTT-S International Microwave Symposium, pp.3-6, June, Long Beach, USA, 2005

2005	Chang-Soon Choi, Jae-Young Kim, Hong-Seung Kim, Eun-Soo Nam and Woo-Young Choi
Gigabit data transmission in fiber-optic/60GHz-band links using InP Heterojunction phototransistors
The 7th Topical Symposium on Millimeter-wave, pp. 167-170, Seoul, Feb. 2005

2005	Woo-Young Choi, Chang-Soon Choi, Hyo-Soon Kang, Dae-Hyun Kim and Kwang-Seok Seo
Fiber-supported millimeter-wave data transmission systems based on InP HEMTs
The 6th Korea-Japan Joint Workshop on Microwave and Millimeter-wave Photonics, pp. 8-11, January, Gyeongju, Korea, 2005

2005	Jae-Young Kim, Chang-Soon Choi, Hong-Seong Kim, Eun-Soo Nam and Woo-Young Choi
Equivalent circuit models for InP/InGaAs HPT
The 6th Korea-Japan Joint Workshop on Microwave and Millimeter-wave Photonics, pp. 91-94, January, Gyeongju, Korea, 2005

2005	Jun-Hyuk Seo, Chang-Soon Choi, Woo-Young Choi, Young-Shik Kang, Yong-Duck Chung, and Jeha Kim
Cascaded SOA-EAM Configuration for Millimeter-wave Frequency Up/Down-conversion
The 6th Korea-Japan Joint Workshop on Microwave and Millimeter-wave Photonics, pp. 35-38, January, Gyeongju, Korea, 2005

2005	Chang-Soon Choi, Jun-Hyuk Seo, Dae-Hyun Kim, Kwang-Seok Seo and Woo-Young Choi
Radio-on-fiber downlink systems based on InP HEMT oscillators
CPT 2005, pp.72-73, Tokyo, Jan. 2005

2004	Pyung-Su Han and Woo-Young Choi
1Gb/s gated-oscillator based burst mode CDR with half-rate clock recovery
2004 International SoC Design Conference, pp. 305-308, COEX ASEM Hall, Seoul, Korea, 25-26-Oct., 2004

2004	Jun-Hyuk Seo, Chang-Soon Choi, Woo-Young Choi, Young-Shik Kang, Yong-Duk Jung, and Jeha Kim
Frequency Conversion with Cascaded SOA-EAM for Bi-directional Radio-on-Fiber Systems
IEEE International Topical Meeting on Microwave Photonics, pp. 56-59, Ogunquit, USA, Oct. 4-6, 2004

2004	Kwang-Hyun Lee, Young Min Jhon, and Woo-Young Choi
A Millimeter-Wave Photonic Vector-Sum Phase Shifter Using Polarization Maintaining Fibers
IEEE International Topical Meeting on Microwave Photonics, pp. 52-55, Ogunquit, USA, Oct. 4-6, 2004

2004	Jae-Wook Lee, Bhum-Cheol Lee, and Woo-Young Choi
A 2-Gbps CMOS Adaptive Line Equalizer
The Fourth IEEE Asia-Pacific Conference on Advanced System Integrated Circuits(AP-ASIC 2004), pp. 244-247, Fukuoka International Congress Center, Fukuoka, Japan, August 4-5, Japan

2004	Chang-Soon Choi, Hyo-Soon Kang, Dae-Hyun Kim, Kwang-Seok Seo and Woo-Young Choi
Characteristics of InP HEMT Harmonic Optoelectronic Mixers and Their Application to 60GHz Radio-on-Fiber Systems
International Microwave Symposium, pp.401-404, Jun. 5-11, 2004 Fort Worth, Texas, U.S.A.

2004	Hye-Seung Ryu, Young-Kwang Seo and Woo-Young Choi
Generation and transmission of 17-GHz optical sideband signals using a 2.5-Gb/s-grade DFB laser with wavelength selective gain from an FP laser
Conference on Laser & Electro-Optics (CLEO), pp.CTuN7, May. 16-21, San Francisco, USA 2004

2004	Chang-Soon Choi, Hyo-Soon Kang, Dae-Hyun Kim, Kwang-Seok Seo and Woo-Young Choi
Millimeter-wave InP HEMT Optoelectronic Mixers
The 5th Japan-Korea Joint Workshop on Microwave and Millimeter-Wave Photonics, pp.19-22, Piazza Ohmi, Nionohama 1-1-20, Otsu, Shiga, Japan, Jan. 29-30, 2004

2004	Kwang-Hyun Lee and Woo-Young Choi
A Novel Photonic Vector-Sum Phase Shifter using Polarization Maintaing Fibers
The 5th Japan-Korea Joint Workshop on Microwave and Millimeter-Wave Photonics, pp.155-158, Piazza Ohmi, Nionohama 1-1-20, Otsu, Shiga, Japan, Jan. 29-30, 2004

2004	Chang-Soon Choi and Woo-Young Choi
Millimeter-wave optoelectronic mixers based on InP HEMTs (Invited paper)
IEEE LEOS Annual Meeting, Puerto Rico, USA

2003	Ki-Hyuk Lee and Woo-Young Choi
Measurement of SOA Differential Carrier Lifetimes and a-Factors using SOA Optical Modulation Responses
LEOS 2003, Tucson, USA, pp.890-891, Oct. 29-30, 2003

2003	Hye-Seung Ryu, Young-Kwang Seo, and Woo-Young Choi
Optical Single Sideband Modulation Using an Injection-Locked Semiconductor Laser as an Optical Filter
International Topical Meeting on Microwave Photonics, pp.223-226, Sep. 10-12, Budapest, Hungary, 2003

2003	Hyo-Soon Kang, Chang-Soon Choi, Woo-Young Choi, Dae-Hyun Kim and Kwang-Seok Seo
High Conversion Gain Millimeter-wave Optoelectronic Mixer based on InAlAs/InGaAs Metamorphic HEMT
International Topical Meeting on Microwave Photonics, pp.105-108, Sep. 10-12, Budapest, Hungary, 2003

2003	Jun-Hyuk Seo, Young-Kwang Seo, and Woo-Young Choi
Nonlinear Characteristics of an SOA Photonic Frequency Up-converter
International Topical Meeting on Microwave Photonics, pp.109-112, Sep. 10-12, Budapest, Hungary, 2003

2003	Chang-Soon Choi, Woo-Young Choi, Dae-Hyun Kim and Kwang-Seok Seo
A Millimeter-wave Harmonic Optoelectronic Mixer based on InAlAs/InGaAs Metamorphic HEMT
The International Microwave Symposium, pp.1383-1386, Philadelphia, USA, Jun. 8-13, 2003

2003	Y.-K. Seo, J.-H. Seo, C.-S. Choi, and W.-Y. Choi
Remote Photonic Frequency-Upconversion using a Semiconductor Optical Amplifier for WDM / Broadband Radio-on-Fiber Links
The 4th Korea-Japan Joint Workshop on Microwave-Photonics, pp.201-205, Daejon, Korea, Jan. 23-24, 2003

2003	Kwang-Hyun Lee, Woo-Young Choi, S. Choi, and K. Oh
A Novel Tunable Fiber-Optic Microwave Filter using Multimode DCF
The 4th Korea-Japan Joint Workshop on Microwave-Photonics, pp.109-112, Daejon, Korea, Jan. 23-24, 2003

2003	Y.-K. Seo, J.-H. Seo, C.-S. Choi and W.-Y.Choi
WDM/Radio-on-Fiber Distribution Using Remote Photonic Frequency-Upconversion
Contemporary Photonics Technology, pp.115-116, Tokyo, Japan, Jan. 15-17, 2003

2003	Chang-Soon Choi, Woo-Young Choi, Dae-Hyun Kim, Kwang-Seok Seo
InA1As/InGaAs Metamorphic HEMT as a photodetector and an optoelectronic up-converter for radio-on-fiber applications
The 4th Korea-Japan Joint Workshop on Microwave-Photonics, pp.37-40, Daejon, Korea, Jan. 23-24, 2003

2002	Y.-K. Seo, J.-H. Seo and W.-Y. Choi
"All-Optical Frequency Up-conversion Using a Semiconductor Optical Amplifier"
MWP 2002, pp.117-120, Nov. 5-8, 2002

2002	K.H. Lee, H.Y.Choi and W.Y.Choi
"Analysis of Chromatic Dispersion Induced Second Harmonic Distortions Including Semiconductor Laser Dynamics"
MWP 2002, pp.133-136, Nov. 5-8, 2002

2002	T.-S. Cheung, B.-C. Lee and W.-Y. Choi
A 1Gbps COMS Data Retiming Circuit using Synchronous Digital Phase Aligners
COIN 2002, pp., Jul. 21-25, 2002

2002	Y.-K. Seo, C.-S. Choi and W.-Y. Choi
"All optical signal up-conversion at K-band using SOA"
The 3rd Japan-Korea Joint Workshop on Microwave and Millimeter-Wave Photonics, pp.119-122, Jan. 24-25, 2002

2002	W.-Y. Choi, K.-H. Lee, H.-Y. Choi, and J.-H. Seo
"Analysis and Suppression of Dynamic Nonlinear Distortions in Semiconductor Laser Diodes (Invited Paper)"
CPT2002, pp.151-154, Jan. 15-17, 2002

2001	Y.-S. Cho, S.-I. Kim, and W.-Y. Choi
"A New Wavelength Converter With Tunalbe Output Wavelength Based on a Self-Seeded Fabry-Perot Laser"
OECC/IOOC 2001 Conference Incorporating ACOFT, pp.214-215, Jul. 2-5, 2001

2001	Y.-K. Seo, J.-H. Seo and W.-Y. Choi
"Enhancement of Locking Bandwidth in DFB Lasers by Side-Mode Injection-Locking"
OECC/IOOC 2001 Conference Incorporating ACOFT, pp.547-548, Jul. 2-5, 2001

2001	W.-Y. Choi, Y.-K. Seo, and H.-K. Sung
" Injection-locked Semiconductor Lasers for Radio-on-Fiber Applications "
2001 URSI International Symposium on Signals, Systems, and Electroics(ISSSE`01), pp.250-253, Jul. 24-27, 2001

2001	J.-H.Seo, Y.-K.Seo and W.-Y.Choi
"Nonlinear Distortion Suppression in Directly Modulated DFB Lasers by Sidemode Optical Injection"
International Microwave Symposium, pp., Mar. 20-25, 2001

2001	Y.-K.Seo A-J.Kim, J.-T.Kim and W.-Y.Choi
"Optical generation of millimeter-waves using injection-locked four-wave-mixing modes in semiconductor lasers"
The 2nd Korea-Japan Joint Workshop on Microwave-Photonics, pp.137-140, Feb. 1-2, 2001

2001	J.-H.Seo, Y.-K.Seo and W.-Y.Choi
Nonlinear Distortion Suppression in Directly Modulated DFB-LDs by Sidemode Optical Injection
The 2nd Korea-Japan Joint Workshop on Microwave-Photonics, pp.59-62, Feb. 1-2, 2001

2001	J.-T. Kim, Y.-K. Seo, and W.-Y. Choi
"Spectral Behaviors of Semiconductor Lasers Locked to External Light Injection from a Current-Modulated Laser"
Proceedings of SPIE, pp.316-324, Jan. 22-26, 2001

2001	Y.-K. Seo, W.-Y. Choi
"Influence of Unselected Master Laser Sidebands on the Spectral Characteristics of Beat Sideband Injection-Locking"
International Topical Meeting on Microwave Photonics, pp.109-112, Jan. 7-9, 2001

2000	Y.-K. Seo, A.-J. Kim and W.-Y. Choi
"Optical Millimeter-Wave Generation by Locking of Four-Wave-Mixing Conjugate Modes in DFB Lasers"
LEOS 2000 Annual Meeting, pp.78-79, Nov. 13-14, 2000

2000	H.-K. Sung, Y.-K. Seo and W.-Y. Choi
"Dependence of semiconductor laser intermodulation distortions on fiber length and its reduction by optical injection locking "
International topical meeting on Microwave Photonics: MWP 2000, pp.186-189, Sep. 11-13, 2000

2000	Kyung-Whan Kim, Chang-Soon Choi and Woo-Young Choi
"Analysis of a Novel Elevated Source Drain MOSFET with Reduced Gate-Induced Drain-Leakage Current"
2000 IEEE Hong Kong Electron Devices Meeting, pp., Jun. 24, 2000

2000	Chang-Soon Choi, Kyung-Whan Kim and Woo-Young Choi
"A New Self-Aligned Asymmetric Structure(SAAS) for 0.1um MOSFET Technology"
2000 IEEE Hong Kong Electron Devices Meeting, pp., Jun. 28-30, 2000

2000	Kyung-Whan Kim, Chang-Soon Choi and Woo-Young Choi
"Analysis of a High Performance Self-Aligned Elevated Source Drain MOSFET with Reduced Gate-Induced Drain-Leakage"
2000 Asia-Pacific Workshop on Fundamental and Application of Advanced Semiconductor Devices, pp., Jun. 28-30, 2000

2000	Chang-Soon Choi, Kyung-Whan Kim and Woo-Young Choi
"A Study on the Characteristics of High Performance Self-Aligned Asymmetric Structure (SAAS) "
2000 Asia-Pacific Workshop on Fundamental and Application of Advanced Semiconductor Devices, pp., Jun. 28-30, 2000

2000	Yong-Sang Cho and Woo-Young Choi
"Polarization-dependent optical gain characteristics of delta-strained QWs for semiconductor optical amplifiers"
Proceedings of SPIE 2000, pp.3944-20, Feb. , 2000

2000	S.H. Lee, N.M. Kwak, K. Cho and W.-Y. Choi
"All-optical mm-wave photonic carrier generation using Fabry-Perot Etalon"
Japan-Korea Joint Workshop on Microwave Photonics, pp., Feb. 2-3, 2000

2000	H.-K. Sung, Y.-K. Seo and W.-Y. Choi
"Nonlinear distortion suppression in Fabry-Perot semiconductor lasers by optical injection locking"
Japan-Korea Joint Workshop on Microwave Photonics, pp., Feb. 2-3, 2000

1999	Young-Kwang Seo and Woo-Young Choi
"Spectral characteristics of semiconductor lasers under strong optical injection"
International Topical Meeting on Microwave Photonics, pp.185-188, Nov. 17-19, 1999

1999	Myung-Su Lee, Tae-Sik Cheung, and Woo-Young Choi
"A novel charge pump PLL with reduced jitter characteristics"
ICVC'99 (International Conference on VLSI and CAD), pp.596-598, Oct. 26-27, 1999

1999	Young-Kwang Seo and Woo-Young Choi
"Analysis of transmission performance enhancement with injection-locked semiconductor lasers"
CLEO PR '99, pp.vol. 3, pp. 916-917, Aug. 8.30~9.3, 1999

1999	Seung-Woo Lee, Eun-Chang Choi and Woo-Young Choi
"Optical interconnection system analysis using SPICE"
CLEO PR '99, pp.Vol. 2, pp. 391-392, Aug. 8.30~9.3, 1999

1998	Y.-H. Choi and W.-Y. Choi
"Modeling and optimization of GaAs/AlGaAs MQW surface reflection all-optical switches"
Proceedings of I998 International Photonics Conference, pp.40-42, Dec. 15-18, 1998

1998	S.W. Lee, E.C. Choi and W.-Y. Choi
A new model for optical interconnection systems including LD turn-on delay effects
LEOS'98 Conference Proceedings, pp.170-171, Dec. 1-4, 1998

1998	T.-S. Cheung, W.-Y. Choi, B.-R. Kim, E.-C. Choi
A Novel 10 GHz-Range Voltage-Controlled Differential Ring Oscillator
Proc of ITC-CSCC '98, pp.1461-1464, Jul. 13-15, 1998

1998	Y.S. Cho, W.-Y. Choi, Y.H. Park, H.T. Yi, S. Lee, D.H. Woo, M.S. Oh, J.S. Yahng, H. J. Kim, S.H. Kim, J.C. Yi
Numerical analysis of quantum well with strained thin layers for polarization insensitive optical amplifiers
*Photonics Research Center,KIST **HongIk Univ.

1997	D.-W. Kim and W.-Y. Choi
"Analysis of harmonic distortions in MQW laser diodes using an equivalent circuit model"
Technical Digest of OECC'97, pp.336-337, Jul. 9, 1997

1997	T.S. Cheung, S.O. Jeon, W.-Y. Choi, B.R. Kim, and E.C. Choi
"Design of Charge - pumped loop filter for GHz-range Phase-Locked Looops with GaAs MESFET"
Proc of ITC-CSCC '97, pp.785-788, Jul. 14-16, 1997

1997	J.M. Choi, J.I. Han, W.-Y. Choi, and B.R. Kim
"Design of a Viterbi decoder with sequence-processing capability"
Proc of ITC-CSCC '97, pp.701-704, Jul. 14-16, 1997

1996	W.-Y. Choi, J.C. Chen, and C.G. Fonstad
"Coupling coefficient calculation for laterally-coupled distributed feedback lasers"
Proc. of OECC '96, pp.78, Jul. , 1996

1996	D.S. Jung, K.W. Kim, J.Y. Kim, B.C. Lee, W.-Y. Choi, and B.R. Kim
"Design of high-speed voltage-controlled ring oscillation with reduced gain"
Proc. of ITC-CSCC '96, pp.967, Jul. 15-17, 1996

1995	W.-Y. Choi and R. Takahashi, Y. Kawamura, T. Kagawa, and H. Iwamura
"A multiple-output high-speed all-optical demultiplexer based on low-temperature-grown Be-doped strained InGaAs/InGaAlAs multiple quantum wells"
Proc. of 21st European Conf. on Optical Comm., pp.953, Mar. , 1995

1995	W.-Y. Choi, R. Takahashi, Y. Kawamura, and H. Iwamura,Ext.
"Femtosecond all-optical And grates based on low-temperature-grown Be-doped strained InGaAs/InGaAlAs multiple quantum wells"
Abst. of 56th Aut. Meet of Japan Soc. of App. Phys., pp.876, Mar. , 1995

1995	W.-Y. Choi, J.C. Chen, and C.G. Fonstad
"1.5um multiple-output high-speed all-optical demultiplexer based on LT-grown Be-doped strained MQWs"
Abst. of 56th Aut. Meet of Japan Soc. of App. Phys., pp.876, Mar. , 1995

1993	W.-Y. Choi, Y. Hirayama, and C.G. Fonstad
Absorption and photoluminescence investigations of exitonic transitions in complessively strained InGaAs and InGaAlAs quantum wells
Proceed. of 5th Intern. Conf. on InP and Relat. Mater., pp.477, . , 1993

1993	W.-Y. Choi and C.G. Fonstad
"Growth optimization of molecular-beam-epitaxy-grown InAlAs on InP"
Proceed. of N.A MBE Conf., pp., . , 1993 C.A. U.S.A.