Multi-Layered Asymmetric Waveguide Structure for Gain-Chip and its Application to Polymer-Based Waveguide Grating for High Power Tunable Laser. - Dong Churl Kim; Dong-Hoon Lee 008; Young-Tak Han; Byung-Seok Choi; Sang-Ho Park; Jang-Uk Shin; Won-Seok Han; Yong-Hwan Kwon; Jong-Hoi Kim; Yongsoon Baek (ECOC, 2017)

A Compact 100G-ER4 ROSA Realized by Hybrid Integration of SOA and Lensed PIN-PDs for QSFP28 Transceivers. - Young-Tak Han; Dong-Hoon Lee 008; Jang-Uk Shin; Sang-Ho Park; Seok-Tae Kim; Sang-Moon Shin; Hong-Beom Kim; Byoungdon Yoon; Yongsoon Baek (OFC, 2019)

Carrier Diffusion Effect in Gain Chip and 60 mW Tunable External Cavity Laser with Diffusion-Limited Gain Chip and Polymer-Based Waveguide Grating. - Dong Churl Kim; Young-Tak Han; Donghoon Lee 008; Seok-Tae Kim; Su Jeong Jeon; Sangho Park; Jang-Uk Shin; Yong-Hwan Kwon; Jong-Hoi Kim; Yongsoon Baek; Ho-Sung Cho (OFC, 2019)

Bandwidth Enhancement of Directly Modulated Lasers Butt-coupled with Silica-Based AWG by External Optical Feedback Effect. - Seok-Jun Yun; Young-Tak Han; Seok-Tae Kim; Jang-Uk Shin; Sang-Ho Park; Dong-Hoon Lee 008; Seo-Young Lee; Yongsoon Baek (OFC, 2020)

Hybrid-Integrated 400G TROSA Module and Its Performance Evaluation Using PAM4 DSP Chip. - Seok-Jun Yun; Young-Tak Han; Seok-Tae Kim; Jang-Uk Shin; Sang-Ho Park; Dong-Hoon Lee 008; Seo-Young Lee; Yongsoon Baek (OFC, 2021)

Realization of EML Submodule for 100-Gbaud Operation Using LC Resonance with Optimization of Load Resistance. - Seok-Jun Yun; Young-Tak Han; Dong-Hoon Lee 008; Seok-Tae Kim; Min-Jun Kwak; Jang-Uk Shin; Yongsoon Baek; Sang-Ho Park; Seo-Young Lee (OFC, 2022)

A 66-GHz Lumped-EML Submodule Using Resistance-Optimized LC Resonance with Low Temperature Dependence of 3-dB Bandwidth. - Seok-Jun Yun; Young-Tak Han; Dong-Hoon Lee 008; Dong-Hyo Lee; Seok-Tae Kim; Jang-Uk Shin; Sang-Ho Park; Seo-Young Lee; Yongsoon Baek (OFC, 2023)