Transmission properties of dielectric-coated hollow optical fibers based on Ni-Ti tube

Katsumasa Iwai; Hiroyuki Takaku; Mitsunobu Miyagi; Yi-Wei Shi; Xiao-Song Zhu; Yuji Matsuura

doi:10.1117/12.2542148

20 February 2020 Transmission properties of dielectric-coated hollow optical fibers based on Ni-Ti tube

Katsumasa Iwai, Hiroyuki Takaku, Mitsunobu Miyagi, Yi-Wei Shi, Xiao-Song Zhu, Yuji Matsuura

Proceedings Volume 11233, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX; 1123315 (2020) https://doi.org/10.1117/12.2542148
Event: SPIE BiOS, 2020, San Francisco, California, United States

Abstract

Ni-Ti tube is used as a supporting tube for the infrared hollow fiber to obtain flexibility and strong mechanical strength. In order to reduce roughness of inner surface of Ni-Ti tube which causes the additional transmission loss, an acrylic-silicon resin material is used as a buffer layer to the inner wall of Ni-Ti tube for a low-loss characteristic. For the dielectric inner-coating layer, cyclic olefin polymer (COP) is used to lower the transmission loss. The COP layer is formed by using liquid-phase coating method. The hollow fibers with optimized COP inner film thickness for CO₂ laser light were fabricated and reasonable transmission losses was demonstrated.

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Citation Download Citation

Katsumasa Iwai, Hiroyuki Takaku, Mitsunobu Miyagi, Yi-Wei Shi, Xiao-Song Zhu, and Yuji Matsuura "Transmission properties of dielectric-coated hollow optical fibers based on Ni-Ti tube", Proc. SPIE 11233, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XX, 1123315 (20 February 2020); https://doi.org/10.1117/12.2542148

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