Hee Ju Choi
Gwangju Institute of Science and Technology
16 Papers
158 Citations
Hee Ju Choi is an academic researcher from Gwangju Institute of Science and Technology. The author has contributed to research in topics: Low voltage & Shutter. The author has an hindex of 6, co-authored 16 publications.
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Papers
Design of highly transparent glasses with broadband antireflective subwavelength structures
TL;DR: It is found that optical transmission characteristics of SWS integrated glasses are governed mainly by the zero-order condition considering multiple internal reflections but not external reflection, which results in low transmittance over a whole range of visible wavelength.
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Large aperture asymmetric Fabry Perot modulator based on asymmetric tandem quantum well for low voltage operation
TL;DR: Results show that AFPM with ATQWs is a good candidate as an optical image modulator for 3D image sensing applications.
10
Shape-controllable, bottom-up fabrication of microlens using oblique angle deposition.
TL;DR: This Letter reports a novel method for the simple fabrication of microlens arrays with a controlled shape and diameter on glass substrates that exhibits uniform optical properties.
8
4 channel × 10 Gb/s bidirectional optical subassembly using silicon optical bench with precise passive optical alignment.
Eun Kyu Kang,Yong Woo Lee,Sooraj Ravindran,Jun Ki Lee,Hee Ju Choi,Gun Wu Ju,Jung-Wook Min,Young Min Song,Ik-Bu Sohn,Yong Tak Lee +9 more
TL;DR: The fabricated BOSA shows high coupling efficiency and good performance with the clearly open eye patterns and a very low bit error rate of less than 10-12 order at a data rate of 10 Gb/s with a PRBS pattern of 231-1.
7
A robust design and fabrication of micromachined electro-absorptive optical modulator for 3D imaging
Yong-Hwa Park,Yong Chul Cho,Jang Woo You,Chang Young Park,Heesun Yoon,Sang-hun Lee,Byung Hoon Na,Gun Wu Ju,Hee Ju Choi,Yong Tak Lee +9 more
- 07 Mar 2014
TL;DR: In this paper, a time-of-flight (TOF) based 3D image capturing system and its enhanced optical modulating device are presented, where the optical shutter is a solid-state controllable filter which modulates the IR image to extract the phase delay due to the emitting IR light.
7