[Introduction]

Nonlinear Optics and Photonic Devices (NOPD) lab was founded in 2013. Our group studies mid-infrared photonic devices, fiber-optic devices, and quantum light sources based on nonlinear optics. We also investigate new applications of the technology in areas beyond communications including amongst others: quantum information, defense, security, and sensing.

[Research Area]

• Nonlinear optics
  – Quantum light sources based on second-order nonlinearities
  – Quadratic cascading in periodically poled ferroelectric crystals
  – New nonlinear-optic phenomena
• Quantum optics
  – Photon-pair generation based on 2nd- and 3rd-order nonlinearities
  – Optical-fiber based quantum light sources
• Mid-infrared (IR) photonics
  – Mid-IR fiber-optic devices
  – Broadband optical components based on off-axis reflective optics
• Fiber optics + Acousto-optics
  – All-fiber acousto-optic devices
  – Mid-IR fiber-optic devices

[Research Projects]

• Research on photonic platforms for generating multidimensional quantum states
  – National Research Foundation (NRF) of Korea (소재 혁신 양자시뮬레이터 개발사업), 2023.05. – 2027.12. (with KIST)
• Development of waveguide-based quantum entanglement optical system and its application
  – Korea Institute of Science and Technology (KIST), 2023.04. – 2027.12.
• Highly bright and high-quality quantum entangled state generation using non-critical phase matching
  – National Research Foundation (NRF) of Korea (양자컴퓨팅기술개발사업)
  2022.04. – 2024.03. (with KIST)
• Lithium niobate waveguide based SPDC efficiency optimization 
  – Institute for Information communication Technology Planning and evaluation (IITP), 2021.01. – 2022.12. (with POSTECH, KIST, ETRI)
• Mid-infrared photonic devices based on fiber-optic and
  off-axis optical systems
  – National Research Foundation (NRF) of Korea (Ministry of Science, ICT & Future Planning), 2019.06. – 2022.02.
• Nonlinear-optic entangled photon-pair and multi-qubit sources for high-purity and high-efficiency quantum communication channels
  – Korea Institute of Science and Technology (KIST), 2019.03. – 2021.12.
• Research on photonic quantum simulation
  – Basic Research Laboratory (BRL), National Research Foundation (NRF) of Korea (Ministry of Science, ICT & Future Planning), 2016.06. – 2019.02. (with POSTECH and Busan Natl. Univ.)
• Temporal cloak based on cascaded second-order nonlinear optic effect
  – Small Grant for Exploratory Research (SGER), National Research Foundation (NRF) of Korea, (Ministry of Science, ICT & Future Planning), 2016.11. – 2017.10.
• Proto-model development of off-axis aluminum telescope for space infrared observations
  – Space Technology Development Program, National Research Foundation (NRF) of Korea (Ministry of Science, ICT & Future Planning), 2014.07. – 2019.06. (with School of Space Research, KHU)
• Near to mid-infrared photonics based on in-fiber acousto-optic platform
  – Basic Science Research Program, National Research Foundation (NRF) of Korea (Ministry of Science, ICT & Future Planning), 2014.05. – 2017.04.
• Mid-infrared photonics based on CMOS compatible integrated photonic platform
  – Framework of International Cooperation Program, National Research Foundation (NRF) of Korea (Ministry of Science, ICT & Future Planning), 2013.09. – 2015.08.
  (with Lyon Institute of Nanotechnology (INL), École Centrale de Lyon, France)
• Application of acousto-optic devices
  – Kyung Hee University, 2013.03 – 2014.02