상세정보
학술지
Core-on-clad Method for Fabricating Mid-infrared Optical Fibers
- 발행일
- 201601
- 출처
- Journal of Non-Crystalline Solids, v.431, pp.72-75
- ISSN
- 0022-3093
- 출판사
- Elsevier
- 협약과제
- 14PB2800, 광대역 광원 및 KW 급 고출력 레이저 광원용 근중적외선 파장대역의 특수 광섬유 기술 개발, 서홍석
- 초록
- We introduce a core-on-clad (COC) method for the fabrication of mid-IR fibers using a single crucible, which is different from a conventional double crucible process. The COC method involves stacking a core rod on a cladding rod in the single crucible and drawing it into the optical fiber directly. With this method, we developed a mid-IR fiber having a core-clad diameter ratio of 90%. By inserting a steel ring between the core and clad rods, the core-clad ratio was further reduced by about 82% and 52%, which depended on the inner hole sizes of the ring. After purification of raw materials, the transmission loss was measured at 1.2 dB/m for the wavelength of 3 μm and 0.26 dB/m for 5 μm. These large core mid-IR fibers can be applied for the beam delivery of medical lasers such as Er-YAG.
- KSP 제안 키워드
- Clad ratio, IR fibers, Large core, Mid-IR, Mid-infrared(MIR), Optical fiber, Raw materials, Transmission loss, diameter ratio, medical lasers