16 February 2011 Fabrication of silver-coated hollow fiber with an inner diameter of 100 µm or less
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Extremely flexible hollow fibers with 100-μm-bore size or less were developed for infrared laser delivery. Fabrication process and transmission properties of the ultra-thin hollow fiber were discussed. 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. Parallel bundles of silica capillary were used to increase the cross-sectional area. To achieve the target, bundles with 560 pieces, 1200 pieces, and 9600 pieces were used for the capillary with inner diameters of 100-μm, 75-μm, and 50-μm, respectively. The loss for the 50-μm bore size, 10-cm length silver hollow fiber was 10 dB at the wavelength of 1 μm.
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Katsumasa Iwai, Katsumasa Iwai, Mitsunobu Miyagi, Mitsunobu Miyagi, Yi-Wei Shi, Yi-Wei Shi, Yuji Matsuura, Yuji Matsuura, } "Fabrication of silver-coated hollow fiber with an inner diameter of 100 µm or less", Proc. SPIE 7894, Optical Fibers, Sensors, and Devices for Biomedical Diagnostics and Treatment XI, 78940B (16 February 2011); doi: 10.1117/12.874087; https://doi.org/10.1117/12.874087

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