Search Results - "Hyungjun Heo"

High fabrication-tolerant narrowband perfect graphene absorber based on guided-mode resonance in distributed Bragg reflector by Lee, Sangjun, Heo, Hyungjun, Kim, Sangin

“…We propose the narrowband perfect absorbers with enormously high fabrication tolerance, which consists of a low-contrast grating and a finite distributed Bragg…”
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Tailoring Fano Resonance for Flat-Top Broadband Reflectors Based on Single Guided-Mode Resonance by Heo, Hyungjun, Lee, Sangjun, Kim, Sangin

“…We investigated on the interaction between a single guided-mode resonance and Fabry-Perot resonance (FPR) in a high contrast grating (HCG) from a viewpoint of…”
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A proposal of a perfect graphene absorber with enhanced design and fabrication tolerance by Lee, Sangjun, Tran, Thang Q., Heo, Hyungjun, Kim, Myunghwan, Kim, Sangin

“…We propose a novel device structure for the perfect absorption of a one-sided lightwavve illumination, which consists of a high-contrast grating (HCG) and an…”
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Angle- and position-insensitive electrically tunable absorption in graphene by epsilon-near-zero effect by Lee, Sangjun, Tran, Thang Q, Kim, Myunghwan, Heo, Hyungjun, Heo, Junseok, Kim, Sangin

“…We propose an electrically tunable absorber based on epsilon-near-zero (ENZ) effect of graphene embedded in a nanocavity, which is composed of metal grating…”
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Photon-pair generation using inverse-designed thin-film lithium niobate mode converters by Kwon, Kiwon, Heo, Hyungjun, Lee, Dongjin, Kim, Hyeongpin, Jang, Hyeong-Soon, Shin, Woncheol, Lim, Hyang-Tag, Kim, Yong-Su, Han, Sang-Wook, Kim, Sangin, Shin, Heedeuk, Kwon, Hyounghan, Jung, Hojoong

“…Spontaneous parametric down-conversion (SPDC) has become a key method for generating entangled photon pairs. Periodically poled thin-film lithium niobate…”
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Broadband absorption enhancement of monolayer graphene by prism coupling in the visible range by Heo, Hyungjun, Lee, Sangjun, Kim, Sangin

“…We experimentally demonstrated the broadband absorption enhancement of monolayer graphene embedded in the center of a dielectric cavity of the prism coupling…”
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Graphene perfect absorber of ultra-wide bandwidth based on wavelength-insensitive phase matching in prism coupling by Lee, Sangjun, Heo, Hyungjun, Kim, Sangin

“…We proposed perfect absorbers of ultra-wide bandwidths based on prism coupling with wavelength-insensitive phase matching, which consists of three dielectric…”
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Mirror-Less Unidirectional Radiation in an Asymmetric Single Resonator by Song, Joohyung, Heo, Hyungjun, Lee, Sangjun, Kim, Sangin

“…We propose a novel approach to realize unidirectional radiation in an asymmetric single resonator without using an external mirror, which is based on mutual…”
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Author Correction: Graphene perfect absorber of ultra-wide bandwidth based on wavelength-insensitive phase matching in prism coupling by Lee, Sangjun, Heo, Hyungjun, Kim, Sangin

“…An amendment to this paper has been published and can be accessed via a link at the top of the paper…”
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Tunable Wide-Angle Tunneling in Graphene-Assisted Frustrated Total Internal Reflection by Tran, Thang Q., Lee, Sangjun, Heo, Hyungjun, Kim, Sangin

“…Electrically tunable permittivity of graphene provides an excellent tool in photonic device design. Many previous works on graphene-based photonic devices…”
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An even-symmetry optical guided mode in a graphene by Myunghwan Kim, Chang-Yeong Jeong, Hyungjun Heo, Sangin Kim

“…We investigate properties of an even-symmetry guided mode in a dielectric/graphene/dielectric structure and propose a means to control the properties of the…”
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Multiband Electro-Optic Modulator Employing a Lithium Niobate Racetrack Resonator Integrated with two Pulley Couplers by Hwang, Hyeon, Nurrahman, Mohamad Reza, Heo, Hyungjun, Ko, Kiyoung, Moon, Kiwon, Ju, Jung Jin, Han, Sang-Wook, Jung, Hojoong, Lee, Hansuek, Seo, Min-Kyo

“…We present a multiband electro-optic modulator based on a lithium niobate racetrack micro-resonator. Integration with two pulley couplers allows…”
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Photon-pair generation and Second harmonic generation experiment on LiNbO3 on insulator by Kwon, Kiwon, Heo, HyungJun, Lee, Dongjin, Han, Sang-Wook, Jung, Hojoong, Shin, Heedeuk

“…We fabricate nano-size photonic waveguides and micro-ring resonators on LiNbO 3 -on-insulator platform, then measure their classical optical properties,…”
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Aluminum nitride waveguide beam splitters for integrated quantum photonic circuits by Jang, Hyeong-Soon, Lee, Donghwa, Heo, Hyungjun, Kim, Yong-Su, Lim, Hyang-Tag, Jeon, Seung-Woo, Moon, Sung, Kim, Sangin, Han, Sang-Wook, Jung, Hojoong

“…We demonstrate integrated photonic circuits for quantum devices using sputtered polycrystalline aluminum nitride (AlN) on insulator. The on-chip AlN waveguide…”
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