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J. Korean Ceram. Soc. > Volume 39(12); 2002 > Article
Journal of the Korean Ceramic Society 2002;39(12): 1158.
doi: https://doi.org/10.4191/kcers.2002.39.12.1158
UV 폴링용 Ge와 B가 첨가된 실리카 유리 광섬유 제조 및 특성 평가
김복현, 안태정, 허종1, 신동욱2, 한원택
광주과학기술원 정보통신공학과
1포항공과대학교 신소재공학과
2한양대학교 세라믹공학과
Fabrication and Characterization of Ge/B-doped Optical Fiber for UV Poling Applications
Bok-Hyeon Kim, Tae-Jun Ahn, Jong Heo1, Dong-Wook Shin2, Won-Taek Han
Department of Information and Communications, Kwangju Institute of Science and Technology
1Department of Materials Science and Engineering, Pohang University of Science and Technology
2Department of Ceramic Engineering, Hanyang University
An Ge/B-doped optical fiber with high photosensitivity was fabricated to induce large second-order optical nonlinearity by UV poling. It was found that long period fiber gratings were inscribed on the fiber by the 248 nm KrF excimer laser irradiation with pulse energy of 116 mJ/$cm^2$ and pulse frequency of 10 Hz without hydrogen loading treatment. The photosensitivity was measured by use of the long period fiber grating pair method and the refractive index change of 3.3$10{times}^{-3}$ was found to be induced in the core of the optical fiber by the KrF excimer laser irradiation of 8.67 kJ/$cm^2$. An H-shaped optical fiber was also fabricated for the UV poling through optimization of the fiber drawing condition.
Key words: Second-order optical nonlinearity, UV poling, Photosensitivity, Optical fiber, Long period fiber grating, Laser
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