Polymer-coated hollow fibers for medical infrared lasers - fabrication, transmission, and end sealing

Yi Wei Shi, Yukio Abe, Shintaro Mori, Yuji Matsuura, Mitsunobu Miyagi

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


Hollow fibers for medical infrared lasers are fabricated by silver-mirror plating and liquid-phase polymer coating method. The coating thicknesses of the inner polymer layer of the fibers are designed so that the fibers show low-loss property for medical infrared lasers with various wavelengths, such as Nd:YAG at 1.06 μm, Er:YAG at 2.94 μm, and CO2 at 10.6 μm. Transmission characteristics of the fibers are shown. Small-bore fibers with inner diameters of 320 and 250 μm for low-loss Er:YAG laser transmission are successfully fabricated. These fibers show better flexibility and small additional loss when bent. A new fabrication procedure without curing-process is also proposed. By considering that end sealing is always an important task for hollow fibers in medical applications, various sealing materials, such as polyimide (PI), cyclic olefin polymer (COP), and fluorocarbon polymer (FCP) are introduced and transmission properties are summarized.

Original languageEnglish
Pages (from-to)268-275
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2000 Jan 1
EventBiomedical Diagnostic, Guidance, and Surgical-Assist Systems II - San Jose, CA, USA
Duration: 2000 Jan 252000 Jan 26

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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