Younghyun Kim

I had a oral presentation with the title of "Modulation performance optimization of 50-Gbps Si micro-ring modulators".  The presentation is like "begin again" for me, because It was the first time to have a presentation at the conference for a new task after my PhD work. More information PDF Details in Korean

실리콘 포토닉스 분야의 Si 마이크로 링 광변조기의 변조특성 최적화에 관한 발표 내용입니다. 2017년 11월 9일 제주에서 구두 발표 예정입니다. ( 시간표 ) Title Modulation performance optimization of 50-Gbps Si micro-ring modulators Abstract We present the results of the modulation performance optimization for the depletion-type Si micro-ring modulator. With analyses based on TCAD simulations and the coupled-mode theory, the optimal device geometry for obtaining the largest optical modulation amplitude for 50-Gbps operation is determined. More information  about the conferencne

I will have an oral presentation with the title of " Simulation of high-power laser diode with improved heat sinking structure using epitaxial liftoff technique " on 29th Jan 2018 at the Moscone center in San Francisco. More information about SPIE Photonics west Title Simulation of high-power laser diode with improved heat sinking structure using epitaxial liftoff technique Abstract The characteristics of high-power broad-area laser diodes with the improved heat sinking structure are numerically analyzed by a technology computer-aided design based self-consistent electro-thermal-optical simulation.  The high-power laser diodes consist of a separate confinement heterostructure of a compressively strained InGaAsP quantum well and GaInP optical cavity layers, and a 100-um-wide rib and a 2000-um long cavity.  In order to overcome the performance deteriorations of high-power laser diodes caused by self-heating such as thermal rollover and thermal blooming, we propose the f...

Background image pictured by Younghyun Kim. Description: Beautiful Han-gang (Han river) in Seoul.

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