Improved coating method for uniform polymer layer in infrared hollow fiber

✍ Scribed by Katsumasa Iwai; Yi-Wei Shi; Mitsunobu Miyagi; Yuji Matsuura

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 225 KB
• Volume: 39
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/j.optlastec.2007.01.001

✦ Synopsis

An improved coating method was proposed in order to form a uniform polymer layer in the fabrication of cyclic olefin polymer-coated silver (COP/Ag) hollow fiber. A COP solution was flowed in a closed loop, in which the silver-coated tube was used as a part of the loop. Owing to the constant flowing speed of the COP solution and the airtight flowing environment, a COP layer was uniformly formed. The hollow fibers attain high performance and deliver multi-wavelength laser light from the infrared to the visible simultaneously. The method was successfully applied to the fabrication of practical hollow fibers with 2 m length for the near and mid-infrared lasers.