Výsledky vyhledávání - "SangYoon Han"

Akademický článek

Fully tunable Fabry-Pérot cavity based on MEMS Sagnac loop reflector with ultra-low static power consumption

Autor: Young Jae Park, Man Jae Her, Youngjae Jeong, Dong Ju Choi, Dong Uk Kim, Min Gi Lim, Myung Seok Hong, Hyug Su Kwon, Kyoungsik Yu, Sangyoon Han

Publikováno v: Microsystems & Nanoengineering, Vol 10, Iss 1, Pp 1-11 (2024)

Abstract The Fabry-Pérot interferometer, a fundamental component in optoelectronic systems, offers interesting applications such as sensors, lasers, and filters. In this work, we show a tunable Fabry-Pérot cavity consisting of tunable Sagnac loop r

Externí odkaz: https://doaj.org/article/3873442ec50b4ce68181af6ac8be35dc

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Akademický článek

Associations between the working experiences at frontline of COVID-19 pandemic and mental health of Korean public health doctors

Autor: Sangyoon Han, Sejin Choi, Seung Hyun Cho, Joonhyuk Lee, Je-Yeon Yun

Publikováno v: BMC Psychiatry, Vol 21, Iss 1, Pp 1-18 (2021)

Abstract Background Demographic, work environmental, and psychosocial features are associated with mental health of healthcare professionals at pandemic frontline. The current study aimed to find predictors of mental health for public health doctors

Externí odkaz: https://doaj.org/article/5d146fe3c93e4ddabceccfda03caca8c

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Akademický článek

High-Performance and Compact Silicon Photonic 3-dB Adiabatic Coupler Based on Shortest Mode Transformer Method

Autor: In Ki Kim, Dong Uk Kim, Vinh Huu Nguyen, Sangyoon Han, Tae Joon Seok

Publikováno v: IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-6 (2021)

A 2 × 2 3-dB coupler is one of the essential photonic components, as a building block of Mach-Zehnder interferometers, to realize large-scale photonic integrated circuits. Unlike typical 2 × 2 3-dB couplers based on direction couplers or multimode

Externí odkaz: https://doaj.org/article/b11b9a92332e40a69a55f72e27ed86a7

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Akademický článek

Universal light-guiding geometry for on-chip resonators having extremely high Q-factor

Autor: Dae-Gon Kim, Sangyoon Han, Joonhyuk Hwang, In Hwan Do, Dongin Jeong, Ji-Hun Lim, Yong-Hoon Lee, Muhan Choi, Yong-Hee Lee, Duk-Yong Choi, Hansuek Lee

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)

High-Q resonators are used to enhance nonlinear phenomena in photonics, but developing a fabrication process to shape a new material into a resonator is challenging and costly. Here, the authors present a method using vapour deposition on pre-pattern

Externí odkaz: https://doaj.org/article/76f1bd15ccf242189bae6105a90783d6

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Akademický článek

Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources

Autor: Seung Ju Yoon, Jungmin Lee, Sangyoon Han, Chang-Kyu Kim, Chi Won Ahn, Myung-Ki Kim, Yong-Hee Lee

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-8 (2018)

Detection of single nanoparticles or molecules often relies on the attachment of fluorescent labels. Here, the authors demonstrate trapping a single nanoparticle on a bowtie nanoantenna and monitoring via second harmonic generation from the particle.

Externí odkaz: https://doaj.org/article/249a1045db9e48d7ad798becba8a2edc

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Akademický článek

Flip Chip Packaging of Digital Silicon Photonics MEMS Switch for Cloud Computing and Data Centre

Autor: How Yuan Hwang, Jun Su Lee, Tae Joon Seok, Alex Forencich, Hannah R. Grant, Dylan Knutson, Niels Quack, Sangyoon Han, Richard S. Muller, George C. Papen, Ming C. Wu, Peter O'Brien

Publikováno v: IEEE Photonics Journal, Vol 9, Iss 3, Pp 1-10 (2017)

We report on the flip chip packaging of Micro-Electro-Mechanical System (MEMS)-based digital silicon photonic switching device and the characterization results of 12 × 12 switching ports. The challenges in packaging N 2 electrical and 2N optical int

Externí odkaz: https://doaj.org/article/d5b595b388f54f15959c152b3684ebdb

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