Dr. Seongmin Ju Profile

Dr. Seongmin Ju

Researcher at Gwangju Institute of Science and Technology

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Author

Publications (10)

SPIE Journal Paper | 8 February 2023

Effect of incident light beam conditions on firing characteristics of the radial-firing optical fiber tip

Yong-Tak Ryu, Seongmin Ju, Bok Hyeon Kim, Youngjoo Chung, Won-Taek Han

OE, Vol. 62, Issue 02, 026104, (February 2023) https://doi.org/10.1117/12.10.1117/1.OE.62.2.026104

KEYWORDS: Optical simulations, Optical fibers, Incident light, Beam diameter, Optical engineering, Gaussian beams, Sodium, Cladding, Beam propagation method, Structured optical fibers

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Proceedings Article | 3 October 2022 Presentation + Paper

Germano-borate glasses containing high Dy3+ ion concentrations for Faraday device applications at 1550 nm

Linganna Kadathala, Ryu Yongtak, Khurram Naeem, Seongmin Ju, Won-Taek Han, Bok Hyeon Kim

Proceedings Volume 12229, 122290C (2022) https://doi.org/10.1117/12.2642924

KEYWORDS: Glasses, Dysprosium, Ions, Magneto-optics, Near infrared, Optical properties, Thermal analysis

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Proceedings Article | 18 April 2021 Presentation + Paper

Novel fabrication technology for active gain fibers

Jaesun Kim, Gaye Park, Seongmin Ju, Jaewan Han, Chanho Hwang, Hyunjoo Kim, Hyeyeon Lee, Junho Lee, Byungjoo Kong, Changhyun Jung, Seunghyun Park

Proceedings Volume 11773, 117730K (2021) https://doi.org/10.1117/12.2593689

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SPIE Journal Paper | 18 March 2021

Fabrication and optical characteristics of large-core radial-firing optical fiber tip comprised of conically shaped air-pocket

Yong-Tak Ryu, Seongmin Ju, Yuseung Lee, Seokhun Lee, Won-Taek Han

OE, Vol. 60, Issue 03, 036107, (March 2021) https://doi.org/10.1117/12.10.1117/1.OE.60.3.036107

KEYWORDS: Optical fibers, Optical simulations, Optical engineering, Sodium, Surgery, Refractive index, Fiber lasers, Tissues, Interfaces, Cladding

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Proceedings Article | 23 April 2017 Paper

A novel photonic crystal fiber with a germanium nanoparticles-doped germano-silicate core and its nonlinear optical characteristics

Seongmook Jeong, Seongmin Ju, Yuseung Lee, Youngwoong Kim, In-Sik Kim, Do-Kyeong Ko, Won-Taek Han

Proceedings Volume 10323, 103234L (2017) https://doi.org/10.1117/12.2265779

KEYWORDS: Glasses, Absorption, Optical fibers, Refractive index, Femtosecond phenomena, Photonic crystal fibers, Germanium, Nanoparticles, Nonlinear optics, Supercontinuum generation

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Proceedings Article | 23 April 2017 Paper

Effect of F doping in the core of a birefringent photonic crystal fiber on sensing capability of temperature and strain sensors

Youngmin Kim, Seongmin Ju, Seongmook Jeong, Seung Ho Lee, Youngwoong Kim, Won-Taek Han

Proceedings Volume 10323, 1032349 (2017) https://doi.org/10.1117/12.2265539

KEYWORDS: Optical fibers, Silica, Photoelasticity, Glasses, Sensors, Fluorine, Photonic crystal fibers, Doping, Birefringence, Temperature metrology

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Proceedings Article | 20 May 2013 Paper

Radiation-induced optical attenuation of Co/Fe co-doped alumino-silicate optical fiber for radiation dosimeter application

Youngwoong Kim, Seongmin Ju, Seongmook Jeong, Jong-Yeol Kim, Nam-Ho Lee, Hyun-Kyu Jung, Won-Taek Han

Proceedings Volume 8794, 87941A (2013) https://doi.org/10.1117/12.2025983

KEYWORDS: Optical fibers, Absorption, Signal attenuation, Single mode fibers, Gamma radiation, Ions, Optical testing, Glasses, Light sources, Metals

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Proceedings Article | 20 May 2013 Paper

Optical fiber bend sensor based on fiber Bragg grating in germano-silicate glass optical fiber with depressed-index structure

Seongmin Ju, Seongmook Jeong, Youngwoong Kim, Myoung-Jin Jang, Onyu Kim, Won-Taek Han

Proceedings Volume 8794, 87942G (2013) https://doi.org/10.1117/12.2026781

KEYWORDS: Fiber Bragg gratings, Optical fibers, Sensors, Glasses, Cladding, Structured optical fibers, Refractive index, Single mode fibers, Fiber optics sensors, Hydrogen

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Proceedings Article | 9 February 2007 Paper

Fabrication and third-order nonlinearity of germano-silicate glass fiber incorporated with Au nanoparticles

Aoxiang Lin, Bok Hyeon Kim, Seongmin Ju, Won-Taek Han

Proceedings Volume 6481, 64810M (2007) https://doi.org/10.1117/12.700574

KEYWORDS: Gold, Glasses, Absorption, Nanoparticles, Electrons, Nonlinear optics, Aluminum, Dielectrics, Doping, Metals

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Proceedings Article | 7 February 2007 Paper

A simple analytical model to determine gain in 1064-nm pumped Tm-doped 1470-nm amplifier

Pramod Watekar, Seongmin Ju, Won-Taek Han

Proceedings Volume 6468, 64680W (2007) https://doi.org/10.1117/12.700670

KEYWORDS: Glasses, Optical fibers, Silica, Argon, Fluorine, Optical amplifiers, Fiber amplifiers, Absorption, Picosecond phenomena, Signal attenuation

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Showing 5 of 10 publications

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