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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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- Issue Date
- 2003-08
- Citation
- IEEE LEOS International Conference on Optical MEMS 2003, pp.18-19
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- 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 fibers, optical path, refractive index, self-Aligned, total internal reflection(TIR)