Abstract
We developed a launching coupler for infrared hollow fibers transmitting Er:YAG laser light. The coupler consists of a short piece of tapered-hollow waveguide and a single lens at the entrance. We fabricate the tapered waveguide by stretching a Pyrex glass tube in a cylindrical furnace. By controlling the temperature and the stretching time, the shape of the taper is precisely controlled. Next a silver layer and a polymer layer are formed upon the inside of the tapered waveguide by using a liquid-phase coating method. Experiments performed using Er:YAG laser light showed the low-loss property and the high-power resistivity of the tapered waveguide. Also it was shown that the lensed-taper coupler effectively removed the influence of misalignment between the input laser beam and the hollow fiber.
| Original language | English |
|---|---|
| Pages (from-to) | 149-153 |
| Number of pages | 5 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 3849 |
| Publication status | Published - 1999 Dec 1 |
| Event | Proceedings of the 1999 Infrared Optical Fibers and their Applications - Boston, MA, USA Duration: 1999 Sep 21 → 1999 Sep 22 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering