Hollow-core lensed-taper launching coupler for Er:YAG laser light

Yuji Matsuura; Masaru Yaegashi; Mitsunobu Miyagi

doi:10.1117/12.372797

10 December 1999 Hollow-core lensed-taper launching coupler for Er:YAG laser light

Yuji Matsuura, Masaru Yaegashi, Mitsunobu Miyagi

Proceedings Volume 3849, Infrared Optical Fibers and Their Applications; (1999) https://doi.org/10.1117/12.372797
Event: Photonics East '99, 1999, Boston, MA, United States

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 paper 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.

Citation Download Citation

Yuji Matsuura, Masaru Yaegashi, and Mitsunobu Miyagi "Hollow-core lensed-taper launching coupler for Er:YAG laser light", Proc. SPIE 3849, Infrared Optical Fibers and Their Applications, (10 December 1999); https://doi.org/10.1117/12.372797

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