Lee, Sang Bae 2024-01-13T01:02:02Z 2024-01-13T01:02:02Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/100694 English optical fiber fiber grating photonic crystal fiber Optical fibers Technology 광섬유 기술 Conference 1 International Green Energy Conference International Green Energy Conference KO