​▪ 연구실 소개 : 광섬유광학연구실 (송광용 교수님)

구성원
-박사과정: 김영훈, 홍준기, 윤재형, 하은채,   

-석사과정: 김주현

-학부연구생: 남준현 (*학부연구생 및 대학원생 모집 중)​

▪ 연구방법
Distributed Fiber Sensors: Distributed Brillouin sensors measure strain and temperature variations of large civil structures and materials based on the spectral shift of Brillouin gain or loss spectrum in an optical fiber, which are useful for real-time structural health monitoring. Our group has performed researches on various types of distributed Brillouin sensors since 2007, and developed innovative technologies useful for the performance improvement in terms of sensing range, spatial resolution, accuracy, and sensing speed. Total number of citations of our papers on distributed Brillouin sensors exceeds 2000 as of Mar. 2023 (Google Scholar).

Brillouin Dynamic Grating: In 2008, we proposed a new concept of optical grating, called Brillouin dynamic grating (BDG), where the generation and key parameters of grating are optically tunable through SBS in a polarization-maintaining optical fiber. The BDG can provide the function of high-speed and reconfigurable optical grating, and the optical frequency offset of the BDG and the SBS pump is highly sensitive to the birefringence of optical fiber, which can be used as a sensing mechanism of strain, temperature, and pressure change. The BDG technology has shown broad range of applications based on various operation platforms with high flexibility and versatility. Total number of citations of our works on the BDG exceeds 1000 as of Mar. 2023 (Google Scholar).

Optical Fiber Devices with Few-mode and Multicore Fibers: All-fiber active and passive devices based on the spatial mode coupling in a few-mode or multicore fiber are researched, as well as in a single-mode fiber used for optical communications.

Optical Fiber Platform for Quantum Communications: High-speed low-loss all-optical switching, automated compensation for polarization mode dispersion, and environmentally-stable optical delay lines are researched for optical fiber-based long-range transmission of a single photon for quantum communication.

Slow and Fast Light in Optical Fiber: In 2005, Prof. Song demonstrated the active control of the speed of light in optical fibers based on stimulated Brillouin scattering (SBS), and initiated the research field called Brillouin slow light. The study on the Brillouin slow light has now evolved into the dispersion engineering technology for active and tailored control of dispersion in optical medium. Total number of citations of his works on the Brillouin slow light exceeds 2000 as of Mar. 2023 (Google Scholar)​

▪ 최근 연구 주제/성과/수행과제
-Pioneering works on ‘Brillouin Slow Light’ and its applications (2005 –)

-Pioneering works on ‘Brillouin Dynamic Grating’ and its applications (2008 –)

-Specialized works on high-performance distributed Brillouin sensors (2004 –)

-SCI Journal Papers: 74 (Corresponding authorship: 55, 2023)

-International Conference Papers: 114 (Invited talk: 29, Best paper award: 5)

-Total Citation: 5379, h-index: 38 (Google Scholar, 2023)

▪ 연구 협력기관

Korea Institute of Science and Technology (KIST), Korea Research Institute of Standards and Science (KRISS): Korea Photonics Technology Institute (KOPTI), University of Illinois at Urbana Champaign (UIUC), University of Alcala, Yokohama National University, Ecole Polytechnique Federale de Lausanne (EPFL).