Invited talks►

SENSORS

“Fiber-Optic Guided Acoustic-Wave Brillouin Scattering Properties and Sensing Application”
Neisei Hayashi, The University of Tokyo, Japan

“Development and Evaluation of Resonator Fiber Optic Gyroscopes”
Huilian Ma, Zhejiang University, China

“Distributed Fiber-Optic Sensing with Ultra-High Spatial Resolution by using Linear Optical Sampling Technique”
Xinyu Fan, Shanghai Jiao Tong University, China

“The Statistical Properties of Distributed Acoustic Sensing”
Avishay Eyal, School of EE, Tel Aviv University, Israel

LASER-MATTER INTERACTION

“High Intensity (>1022 W/cm2), High Contrast (<10-11), Repetitive (0.1 Hz) J-KAREN-P Laser Facility at QST”
Hiromitsu Kiriyama, National Institutes on Quantum and Radiological Science and Technology (QST), Japan

“Particle Acceleration by the High intensity (>1022 W/cm2), High Contrast (<10-11), Repetitive (0.1 Hz) J-KAREN-P Laser”
Mamiko Nishiuchi, National Institutes for Quantum and Radiological Science and Technology (QST), Japan

“The Multi-Functional High Power Laser Platform in NLHPLP”
Jianqiang Zhu, National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine Mechanics, CAS, China

"Pulsed Laser Nanofabrication of Advanced Nanophotonic Structures"
Yuri Kulchin, Institute of Automatic and Control Processes (IACP) FEB RAS, National Research Nuclear University MEPhI, Moscow, Russia

Laser-Induced Porous Glass Densification – the Way for Integral Sensors Fabrication”
Vadim Veiko, ITMO University, Saint Petersburg, Russia

“Laser Pulses Interaction with Solid and Liquid Materials: Applications to Biomedical, Mechanical and Chemical Top Technologies”
Ion Mihailescu, National Institute for Lasers, Plasma and Radiation Physics, Romania

“Role Of Laser-Induced Thermal Stresses in Material Modification: Comparative Analysis for Lasers of Different Pulse Duration”
Nadejda Bulgakova, HiLASE Centre, Institute of Physics of the ASCR, Czech Republic

Laser–Assisted Periodic Nanostructure Formation in Dielectric Materials: Formation Mechanisms”
Tatiana Itina, Hubert Curien Laboratory, UMN CNRS-Lyon University, France

"Rapid Electronic and Sub-ps Structural Transitions in Ultrafast Laser Irradiated Transition Metals"
Razvan Stoian, Hubert Curien Laboratory, CNRS-Lyon University, France

"Photolytic Formation of NV Centers in Diamond”
Vitali Kononenko, A.M.Prokhorov General Physics Institute of RAS, Moscow, Russia

“Milligram-per-Second Femtosecond Laser Production of Se Nanoparticle Inks and Ink-Jet Printing of Anti-Bacterial and Sensing Nanophotonic 2D-Patterns”
Andrey Ionin, P.N.Lebedev Physical Institute of RAS, Moscow, Russia

“High Power THz Radiation from Laser-Plasma Interaction”
Min Sup Hur, Ulsan National Institute of Science and Technology (UNIST), Korea

“High Intensity X-ray Laser - Matter Interactions”
Byoung-ick Cho, Gwangju Institute of Science and Technology (GIST), Korea

Investigating Optical Properties of Metals and Alloys in Solid and Liquid State with High Temperature Ellipsometry”
Marc Schmid, Bern University of Applied Science, Institute of Advances in Laser, Photonics and Surface Technology, Switzerland

“Laser Ultrasonic Mediated Crystalline Phase Formation in a Thin Film” 
Henry Helvajian, Fellow SPIE Physical Sciences Laboratories, The Aerospace Corporation, USA

“Laser-induced damage thresholds of metals: Comparison of air and water environments”
Alexander Bulgakov, S.S. Kutateladze Institute of Thermophysics SB RAS, Russia

“Periodically Poled MgO Doped LiNbO3 and LiTaOfor Coherent Light Frequency Conversion”
Vladimir Shur, Ural Federal University, Ekaterinburg, Russia

“Laser-Assisted Deposition of Colloidal Nanoparticles Forcreation Fractal Bimetallic Structures”
Alexey Kucherik, Stoletov Vladimir State University, Russia

“Efficient Coupling of Sub-PW Laser Pulse with Solid Target at PEARL Facility”
Alexander Soloviev, Institute of Applied Physics of the RAS (IAP RAS), Russia

BIOPHOTONICS

“Applications of Inverse Scattering Principles with Digital Holography”
Yong Keun Park, Korea Advanced Institute of Science and Technology (KAIST), Korea

“Twenty Years of Doppler OCT and OCT Angiography: Past, Present, and Future”
Zhongping Chen, University of California, Irvine, USA

Functional Near Infrared Spectroscopy as a Clinical Diagnostic Tool”
Beop-Min Kim, Korea University, Seoul, Korea,

Creation and Improvement of Tissue Optical Windows for Laser Probing and Treatment Using Immersion Optical Clearing”
Valery Tuchin, Saratov National Research State University Institute of Precision Mechanics and Control RAS, Russia

“Skull Optical Clearing for Accessing To Cerebral Hemodynamics”
Dan Zhu, Huazhong University of Science and Technology (HUST), Wuhan, China

“Brain Activations Associated with Online Video Game Playing: A Functional Near Infrared Spectroscopy Study”
Hao Lei, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences

“Optical Fiber Methods for Deep Brain Calcium Signal Measurements in Behaving Mice”
Ling Fu, Huazhong University of Science Technology (HUST), Wuhan, China

“3D Intraoral Scanning System for Structure/diagnosis in dentistry”
Joo Beom Eom, Korea Photonics Technology Institute, Korea

Comprehensive Label-Free Intracoronary Optical Imaging”
Hongki Yoo, Hanyang University, Korea

“Intraoperative Optical Coherence Tomography Probe with Augmented Reality for Surgical Applications”
Jeehyun Kim, Kyungpook National University, Korea

“Functional Fourier Domain Optical Coherence Tomography and its Application”
Zhihua Ding, Zhejiang University, China

"Optical-Spectroscopic Studies of Nanoparticles-Mediated Drug Delivery"
Elena Perevedentseva, National Dong Hwa University, Taiwan

"Spectroscopic Study of NP Influence on in vitro Development of Preimplantation Mouse Embryos"
Artashes Karmenian, National Dong Hwa University, Taiwan

"Motion-Free and True-Shape Three-Dimensional Retinal Imaging by Lissajous Optical Coherence Tomography"
Yoshiaki Yasuno, University of Tsukuba, Japan

“Optical Multiplexing of Off-Axis Digital Holograms and its Applications”
Natan Tzvi Shaked, Tel Aviv University, Israel

“Optical Study of Interaction of Fe2O3 Nanoparticles with Human Erythrocytes and Their Effect on Blood Microrheological Properties”
Andrei Lugovtsov, M.V.Lomonosov Moscow State University, Russia

“Laser Trapping and Manipulation of Live Cells”
Alexander Priezzhev, M.V.Lomonosov Moscow State University, Russia

"Detection of Circulating Tumor DNA with Closed-Loop PCR-based Surface Plasmonic Resonance Sensor"
Sehyun Shin, Korea University, Seoul, Korea

“Monitoring of Anesthesia Depth by Near-Infrared Spectroscopy”
Jae Gwan Kim, GIST, Korea

“Fourier Domain Optical Coherence Tomography and its Application”
Zhihua Ding, Zhejiang University, China

“Two-Photon Tomography of The Nail Fold: Novel Insights into the Relevance of Perivascular Tissue Parameters for Cardiovascular Disease Diagnosis”
Evgeny Shirshin, M.V. Lomonosov Moscow State University, Russia

“Time-Dependent Analysis and Noise Suppression of Surface Enhanced Raman Spectroscopy using Optical Code Modulation”
Wonkyoung  Lee, Bio-Medical IT Convergence Research Division, ETRI, Korea

LASER SYSTEMS AND MATERIALS

“Laser-Nonlinear Oxide Media Doped with Tm3+ Ions”
Ludmila Ivleva, Maxim Doroshenko, A.M. Prokhorov General Physics Institute, Russia

“Disk Lasers with Multi-Beam Pumping”
Vladimir Tsvetkov, Ivan Shcherbakov, A.M. Prokhorov General Physics Institute RAS, Russia

“Monoclinic Double Tungstate Thin-Disk lasers at 2 microns “
Xavies Mateos, Universitat Rovira i Virgili (URV), Tarragona, Spain

"Technology and Applications of Kilowatt Average Power DPSSLs "
Tomas Mocek, HiLASE Centre, Institute of Physics ASCR, Czech Republic

"Efficient 810-nm LED-Side-Pumped Nd:YAG Laser"
Kuan-Wei Su, National Chiao Tung University, Taiwan

“Power Scaling of in-Band Pumped Holmium Doped Ceramic Lasers at ~ 2 µm”
Deyuan Shen, Fudan University, China

“High power narrow-linewidth fiber amplifiers and their beam combining”
Yifeng Yang, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, China

“Wideband Ultrashort Pulse Fiber Lasers and Their Applications”
Norihiko Nishizawa, Nagoya University, Japan

"Room-Temperature-Bonding Technique for a Developing New Laser and Wavelength-Conversion Devices"
Ichiro Shoji, Chuo University, Tokyo, Japan

“New Ba-Based Nonlinear Crystals for Frequency Conversion of Near-IR lasers into the Mid-IR”
Valentin Petrov, Max-Born-Institute for Nonlinear Optics and Ultrafast Spectroscopy (MBI), Berlin, Germany

“Characterization of Thermal Effect in Quasi-Phase-Matched Nonlinear Crystal”
Sunao Kurimura, National Institute for Materials Science (NIMS), Tsukuba, Japan

"Laser-Diode Pumped Pulsed Visible Praseodymium Lasers”
Haohai Yu, State Key Laboratory of Crystal Materials and Institute of crystal Materials, Shandong University, China

“Tailoring Laser Beam Profiles from a Dual-Cavity Laser Configuration”
Ji Won Kim, Hanyang University ERICA, Korea

Yb3+-doped CaF2-LaF3 Ceramics for High Power Ultrashort Pulse Lasers”
Akira Shirakawa, University of  Electro-Communications, Japan

Broad Expansion of Optical Frequency Combs by Self-Raman Scattering in Coupled-Cavity Self-Mode-Locked Monolithic Lasers”
Yung-Fu Chen, National Chiao Tung University, Taiwan

“Disordered Perovskite Crystals for CW and Ultrafast Laser Sources”
Stefano Veronesi, NEST- Istituto Nanoscienze – CNR, Italy

“Picosecond diode pumped lasers of high peak and average power”
Vycheslav Morozov, M.V. Lomonosov Moscow State University, ILC and Phys. Dept., Russia

“High Power Fiber Lasers and Beam Combining Technology”
Bing He, Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, China

“Current Status of Kumgang Laser: Coherent 2 Beam Combination using Pre-Pulsed SBS-PCM at High Power Laser System”
Hong Jin Kong, KAIST, Korea

LASER DIAGNOSTICS AND SPECTROSCOPY

“Correlative Optical Imaging in the Far-Field and Near-Field Regimes: Architecture, Applications and Perspectives”
Stefan Stanciu, Center for Microscopy-Microanalysis and Information Processing, University Politehnica of Bucharest, Romania

“Laser-Induced Wavelength-Controlled Self-Assembly of Colloidal Quasiresonant Nanoparticles: Chance to Overcome the Diffraction Limit”
Vitaliy Slabko, Engineering Physics and Radioelectronics Institute, Siberian Federal University, Krasnoyarsk, Russia

“VOCs Emitted from Seeds Germinated with Heavy Metals Measured by Optical Spectroscopy Technique”
Dan Dumitras, National Institute for Laser, Plasma and Radiation Physics, Bucharest, Romania

“Non-Destructive Detection Capability of Laser Diagnostics based Optical Coherence Tomography for Agricultural Applications”
Mansik Jeon, Kyungpook National University, Korea

“Designing Microcavity Laser Diodes by using Transformation Optics”
Muhan Choi, Kyungpook National University, Korea

"Control of CdTe Quantum Dots Photostability"
Aleksey Tsipotan, Siberian Federal University, Krasnoyarsk, Russia

Photoacoustic Spectroscopy Technologies for Non-invasive Detection of Glucose in Human Body”
Chang Geun Ahn, ETRI, Korea

PHOTOACOUSTICS

“Listening to Light and Seeing Through: In Vivo Multiscale Photoacoustic Imaging”
Chulhong Kim, Pohang University of Science and Technology, Korea

“Molecular Photoacoustic Imaging”
Changho Lee, Department of Nuclear Medicine, Chonnam National University Medical School & Hwasun Hospital, Korea

Principal Spectrum Decomposition in Photoacoustic Imaging”
Cheng Ma, Tsinghua University, China

"Combined Optoacoustic and Near-Infrared Optical Tomography for Quantitative Blood Oxygenation Measurements"
Martin Frenz, University of Bern, Institute of Applied Physics, Switzerland

THz SOURCES AND APPLICATIONS

Accelerator based THz Sources and its Applications in Japan”
Hideaki Ohgaki, IAE, Kyoto University, Japan

“Extreme Nonlinear Optics in the THz Regime”
Tsuneyuki [John] Ozaki, INRS-EMT, Quebec, Canada

“Control of Terahertz Yield and Field Vector Orientation in a Two-Colour Femtosecond Filament”
Olga Kosareva, Physics Department, Lomonosov Moscow State University, Moscow, Russia

“Development and Application of Powerful and Stable THz Gyrotrons”
Mikhail Glyavin, Insitute Applied Physics RAS (IAP RAS), N.Novgorod, Russia

“Efficient Generation and Modulation of THz Waves by using Nanostructures”
Chul-Sik Kee, Advanced Photonics Research Institute, GIST, Korea

“The Talbot Effect Revisited: Studies in the Terahertz Range”
Boris Knyazev, Budker Institute of Nuclear Physics SB RAS, Russia

“THz early detection of thrombus for stroke prevention”
Chi-Kuang Sun, National Taiwan University, Taiwan

“Sub-THz Vacuum Devices based on Grating and CW Imaging”
Jung-Il Kim, Korea Electrotechnology Research Institute, Korea

“On-Chip Picosecond Pulses in 2DEG and Graphene”
Alexander Mayorov, National University of Singapore, Singapore

“THz Near-Field Microscopy”
Haewook Han, Pohang University of Science and Technology (POSTECH), Korea

“Thz Parametric Source and its Applications”
Kodo Kawase, Nagoya University, Nagoya, Japan

“Enhanced Crystaliozation of Polymer by High-Power THz Radiation”
Chiko Otani, Riken, Sendai, Japan
  

“A 2 kW Single-Mode Fiber Laser using Bidirectional-Pump Scheme”
Zhang Xinhai, Southern University of Science and Technol., ShenZhen, China 

“Off-Axis THz Parametric Oscillator”,
Yen-Chieh Huang, National Tinghua University, Taiwan

“Long Distance Propagation by THz Pulse”
Tae-In Jeon, Korea Maritime and Ocean University, Korea

“Resonant Tunneling Diodes for THz Applications”
Jae-Young Kim, Rohm Co., Ltd, Japan

“Graphene in Strong Electromagnetic Fields”
Andrey Stepanov, Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod, Russia

“Terahertz molecular fingerprint of cancer DNA”
Joo-Hiuk Son, Department of Physics University of Seoul, Korea

Evidence of two-photon absorption anisotropy in zinc-blende crystals through terahertz optical rectification”
Jean-Luois Coutaz, University of Savouy, France

Introduction into Nonlinear THz Photonics: Basis and their Potential Applications”
Aleexander Shkurinov, Physics Departmen, M.V. Lomonosov Moscow State University, Moscow, Russia

Biomedical Imaging Technology Using THz Wave”
Seung Jae Oh, Yonsei University, Korea

CMOS Biosensor using Picosecond Dynamics of Water Molecule”
Yuichi Ogawa, Kyoto University, Japan

Development of Microbial Sensors Using Terahertz Split-Ring Resonator Arrays”
Yeong-Hwan Ahn, Ajou University, Korea

“THz Metamaterials for Sensing and Communication Application”
Seongsin Margaret Kim, University of Alabama, USA

“Nano-Electrode Photonic Devices for the Generation and Detection of Pulse and Continuous-Wave THz Radiation”
Kiwon Moon, ETRI, Korea

“Tunable Continuous Wave Terahertz Generation using Monolithic Integrated Dual-Mode DFB Laser”
Hyun Soo Kim, ETRI, Korea

 “In-Vivo THz Sensing of Tear Film and Corneal Tissue”
Ilya Ozheredov, Physics Departmen, M.V. Lomonosov Moscow State University, Moscow, Russia

NONLINEAR OPTICS AND PHOTONICS

“Polarization Singularities Nucleation in the Self-Focusing of an Elliptically Polarized Laser Beam in Kerr Medium and Isotropic Phase of Nematic Liquid Crystal”
Vladimir Makarov, M.V. Lomonosov Moscow State University, Physics Dept., Russia

“Ultrafast Photoexcited Carrier Dynamics and Photo Response of 3D Dirac Semimetallic Cd3As2”
Dong Sun, Peking University, China

“Time-Variant Metasurface as a Frequency Converting Platform”
Bumki Min, Korea Advanced Institute of Science and Technology, Korea

“Broadband Nonlinear Photonics in Graphene”
Fabian Rotermund, KAIST, Korea

“Efficient Second and Third Harmonic Generations in Magnetic Metamaterials”
Junsuk Rho, Pohang University of Science and Technology (POSTECH), Korea

“Slowdown of Light in Free Space via Rayleigh Anomaly”
Kyoung-Youm Kim, Sejong University, Korea

”Magnetophotonics with Mie Resonances in Nanoantennas”
Andrey Fedyanin, Physics Dept., M.V. Lomonosov Moscow State University, Russia

MICRO-AND NANOPHOTONICS

“High Resolution Imaging with Electron Beam Assisted (EXA) Micrscopy for Bio Technology”
Yoshimasa Kawata, Shizuoka University, Japan

“Mid-Infrared Active Plasmonics in Graphene”
Min Seok Jang, Korea Advanced Institute of Science and Technology, Korea

“Holographic Manipulation of Femtosecond Laser Pulses for Advanced Material Processing”
Satoshi Hasegawa and Yoshio Hayasaki, Utsunomiya University, Japan

“Highly Transparent and Conductive Glass Electrodes using Nanoscale Conducting Channels”
Tae Geun Kim, Korea University, Korea

“Terahertz Nanophotonics and its Sensing Applications”
Hyeong-Ryeol Park, Chungbuk National University, Korea

“Laser Manipulation of Single-Wall Carbon Nanotubes”
Satoru Shoji, The University of Electro-Communications, Japan

“Exciton-polaritons in nanostructured semiconductors”
Chang-Hee Cho, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Korea

“First observation of the number-density-dependent growth of plasmonic nanobubbles”
Takashi Nakajima, Kyoto University, Japan

“Design of Graphene-Integrated Silicon Electro-Optic Modulators based on Isotropic and Anisotropic Graphene Models”
Jin Tae Kim, ETRI, Korea

“Plasmonics and Metamaterials for Imaging and Hologram Applications”
Choon-Gi Choi, ETRI, Korea

Terahertz Vortex Generation and its Applications”
Katsuhiko Miyamoto, Chiba University, Japan

Resonant Tip Enhanced Raman Scattering Imaging of Defects in 2 Dimensional WS2 Monolayer”
Mun-Seok Jeong, Sunghyunkwan University, Korea

Simple Field Enhancement Formulation for Gold Bipyramids for Application in Two-Photon Luminescence and Scattering”
James Chon, Swinburne University, Austrailia

ULTRASHORT LASER TECHNOLOGIES AND APPLICATIONS

“Tailored Femtosecond Bessel Beam for High Aspect-Ratio Through Hole Drilling”
Koji Sugioka, RIKEN Center for Advanced Photonics, Japan

“Periodic Nano-Texturing by Interference Femtosecond Laser Processing Technique”
Yoshiki Nakata, Osaka University, Japan

“Processing of Materials with Shaped Femtosecond Laser Pulses”
Ya Cheng, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, China

“Subtractive and Additive Processing of Biocompatible Materials using Femtosecond Laser”
Mitsuhiro Terakawa, Keio University, Japan

“Next Generation High Harmonic Sources”
Katsumi Midorikawa, RIKEN Center for Advanced Photonics, Japan

“Multiscale Laser Sintering Technology for Various Applications”
Dongsik Kim, Pohang University of Science and Technology (POSTECH), Korea

“Optical Tracing and Tailoring Phase of Acoustic Phonons”
Young-Dahl Jho, GIST, Korea

“Atmospheric Applications of Ultrashort-Pulse Lasers”
Pavel Polynkin, University of Arizona, USA

“Self-Referenced Waveform Measurement of Ultrashort Mid-Infrared Pulses”
Takao Fuji, Institute for Molecular Science, Okazaki, Japan

“High Power Femtosecond Fiber Laser and its Nonlinear Frequency Conversion”
Minglie Hu, Tianjin University, P.R. China

High Order Harmonic Generation by Tunable Laser Mid-Infrared Pulsed in Solids: New Opportunities for Spectroscopy
of Electron Band Structure”
Andrey Fedotov, Lomonosov Moscow State University, Physics Department, Russia

Low-Noise Mode-Locked Fiber Lasers and their High-Precision Applications”
Jungwon Kim, KAIST, Korea

Low-Dimensional Material-based In-Line Saturable Absorbers for Ultrafast Fiber Laser Applications”
Dong-Il Yeom, Ajou University, Korea

IMAGING AND DISPLAYING

“Highly Efficient Top Emission OLED Devices for Display Application”
Jang-Hyuk Kwon, Kyung Hee University, Korea

“Switchable Micro-Lens Array for 3D Displays and 3D Imaging”
Hak-Rin Kim, Kyungpook National University, Korea

“Phase-Mode Holographic Three-Dimensional Display by Optimized Binary Phase Modulation”
Osamu Matoba, Kobe University, Japan

“Multi-Modal Aerial Information Display for Next Generation Digital Signage”
Hirotsugu Yamamoto, Utsunomiya University, Japan

“Recent Progress on Mesh-based Computer Generated Hologram”
Jae-Hyeung Park, Inha University, Korea

“Polarization-Encoded Multi-Focal 3D Display”
Soon-gi Park, Korea Institute of Science and Technology, Korea

Recent Researches on Three-Dimensional Screen for Projection-Type Three-Dimensional Display”
Sung-Wook Min, Kyung Hee University, Korea

Implementation of Spatially-Expanded 360 Degree Viewable Holographic Display”
Yongjun Lim, ETRI, Korea

“Viewing-zone Scanning Holographic Display Empolying MEMS-SLM”
Yasuhiro Takaki, Tokyo University of Agriculture and Technology, Japan

“Ultra Wide Vision for Emmersive Live Broadcasting”
Jeongil Seo, Electronics and Telecommunications Research Institute (ETRI), Korea

FIBER OPTICS AND OPTICAL COMMUNICATIONS

“O-Band Optical Transmission Technologies for 100G Ethernet Passive Optical Networks”
Han Hyub Lee, Electronics and Telecommunications Research Institute, Korea

“RoF Technologies for Mobile Fronthaul and Indoor DAS Applications”
Seung-Hyun Cho, Electronics and Telecommunications Research Institute, Korea

“High-Speed Transmission using Directly Modulated Lasers”
Hoon Kim, Korea Advanced Institute of Science and Technology, Korea

“Radio-Over-Fiber for Future Mobile and Advanced Imaging”
Tetsuya Kawanishi, Waseda University/NICT, Japan

“Pulsed Sodium Guide Star Laser based on Raman Fiber Amplifiers”
Yan Feng, Shanghai Institute of Optics and Fine Mechanics, CAS, China

Defective WTe2 Microflakes for Femtosecond Fiber Laser Mode-Locking”
Ju Han Lee, Seoul University, Korea

“Tunable External Cavity Laser using InP Gain-Chip and Polymer Waveguide Grating for Coherent Optical Communications”
Dong Churl Kim, Electronics and Telecommunications Research Institute, Korea

“A Multi-Wavelength l/4-Shifted Distibuted Feedback Laser Diode Array for WDM-based Datacenter Networks”
Su Hwan Oh, Electronics and Telecommunication Research Institute, Korea