TY - GEN
T1 - Fabrication of 75-μm-bore hollow optical fibers for infrared transmission
AU - Iwai, Katsumasa
AU - Sasaki, Yasuhiro
AU - Takaku, Hiroyuki
AU - Miyagi, Mitsunobu
AU - Shi, Yi Wei
AU - Zhu, Xiao Song
AU - Matsuura, Yuji
N1 - Funding Information:
This research is supported by the Japan Society for the Promotion of Science of Japan through a Grant-in-Aid for Scientific Research (C) (16K06329) 2018 and Grant-in-Aid for Scientific Research (C) (18K04293) 2018.
Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.
PY - 2019
Y1 - 2019
N2 - Extremely flexible hollow optical fibers with 75-μm-bore size were developed for infrared laser light delivery. The hollow fiber was inner coated with silver and dielectric layers to enhance the reflection rate at an objective wavelength band. The silver layer was inner-coated by using the conventional silver mirror-plating technique. Concerning the fabrication parameters used up to now for 320-μm-bore size fibers, the target flowing rate for plating solutions was 10 ml/min. Parallel arranged bundles of silica capillaries were used to increase the cross-sectional area of the air core. To achieve the flow-rate target, four bundles of 300 pieces of silica capillaries with an inner/outer diameter of 75/150-μm and a length of 20 cm were bundled. To increase the flow rate, four bundles with an inner diameter of 75-μm and a length of 20 cm, together with three silica capillaries with an inner diameter of 530-μm and a length of 50 cm were connected in parallel. The spectrum loss measured by an optical spectrum analyzer for the 75-μm-bore size, 10-cm-length silver hollow optical fiber was around 5 dB at the wavelength of 1-μm. Thin dielectric layer was formed by using liquid-phase coating method for low-loss transmission of Er:YAG laser light.
AB - Extremely flexible hollow optical fibers with 75-μm-bore size were developed for infrared laser light delivery. The hollow fiber was inner coated with silver and dielectric layers to enhance the reflection rate at an objective wavelength band. The silver layer was inner-coated by using the conventional silver mirror-plating technique. Concerning the fabrication parameters used up to now for 320-μm-bore size fibers, the target flowing rate for plating solutions was 10 ml/min. Parallel arranged bundles of silica capillaries were used to increase the cross-sectional area of the air core. To achieve the flow-rate target, four bundles of 300 pieces of silica capillaries with an inner/outer diameter of 75/150-μm and a length of 20 cm were bundled. To increase the flow rate, four bundles with an inner diameter of 75-μm and a length of 20 cm, together with three silica capillaries with an inner diameter of 530-μm and a length of 50 cm were connected in parallel. The spectrum loss measured by an optical spectrum analyzer for the 75-μm-bore size, 10-cm-length silver hollow optical fiber was around 5 dB at the wavelength of 1-μm. Thin dielectric layer was formed by using liquid-phase coating method for low-loss transmission of Er:YAG laser light.
UR - http://www.scopus.com/inward/record.url?scp=85064861830&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85064861830&partnerID=8YFLogxK
U2 - 10.1117/12.2507432
DO - 10.1117/12.2507432
M3 - Conference contribution
AN - SCOPUS:85064861830
T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE
BT - Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIX
A2 - Gannot, Israel
A2 - Gannot, Israel
PB - SPIE
T2 - Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XIX 2019
Y2 - 2 February 2019 through 3 February 2019
ER -