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Conference Paper Self-aligned microlens fabricated on the sidewall of 45°-angled optical fiber for NSOM illumination system
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Authors
Myun-Sik Kim, Kyoung-Woo Jo, Jong-Hyun Lee, Ki-Bong Song, Eun-Kyung Kim, Kang-Ho Park
Issue Date
2003-08
Citation
IEEE LEOS International Conference on Optical MEMS 2003, pp.18-19
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/OMEMS.2003.1233446
Abstract
A miniaturized illumination system, which consists of a waveguide with an integrated 45째 TIR (total internal reflection) mirror and a microlens for a compact high-capacity optical data storage, is proposed and fabricated. The micro illumination system can be realized by changing the incident lateral optical path into the vertical direction with a horizontal placement of 45째-angled optical fiber. The refractive index of the optical fiber is 1.45 and the critical incident angle of TIR is 43.4째 at the fiber-air interface. Therefore, the 45째-angled end-face of optical fiber satisfies the TIR condition with no metal coating for mirror reflection.
KSP Keywords
Air interface, Critical incident angle, High-capacity, Metal coating, Optical data storage, Optical fiber, Optical path, refractive index, self-Aligned, total internal reflection(TIR)