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Proceedings Paper

Fabrication of 50-μm-bore hollow fiber for infrared transmission
Author(s): Katsumasa Iwai; Kouki Takahashi; Hiroyuki Takaku; Mitsunobu Miyagi; Yi-Wei Shi; Yuji Matsuura
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Paper Abstract

Extremely flexible hollow fibers with 50 μm-bore size were developed for infrared laser light delivery. The hollow fiber was inner coated with silver and a dielectric layer to enhance the reflection rate at an objective wavelength band. The silver layer was inner-plated by using the conventional silver mirror-plating technique. Concerning the fabrication parameters used up to now for 320-μm bore-sized fibers, the target flowing rate for plating solutions was 10 ml/min. Parallelly arranged bundles of silica capillary were used to increase the cross-sectional area. To achieve the target, bundles with 4800 pieces were used for the capillary with a length of 20 cm and inner diameters of 50 μm. The loss for the 50 μm bore size, 10 cm length silver hollow fiber was 6 dB at the wavelength of 1 μm. Thin dielectric layer was formed by using liquid-phase coating method for low-loss transmission of Nd:YAG and Er:YAG laser light.

Paper Details

Date Published: 20 February 2014
PDF: 8 pages
Proc. SPIE 8938, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV, 893808 (20 February 2014); doi: 10.1117/12.2036666
Show Author Affiliations
Katsumasa Iwai, Sendai National College of Technology (Japan)
Kouki Takahashi, Sendai National College of Technology (Japan)
Hiroyuki Takaku, Sendai National College of Technology (Japan)
Mitsunobu Miyagi, Tohoku Institute of Technology (Japan)
Yi-Wei Shi, Fudan Univ. (China)
Yuji Matsuura, Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 8938:
Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIV
Israel Gannot, Editor(s)

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