Low loss smart hollow waveguides with new polymer coating material |
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| Authors: | Yi-Wei Shi Yukio Abe Yuji Matsuura Mitsunobu Miyagi |
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| Institution: | Department of Electrical Communications, Graduate School of Engineering, Tohoku University, Aramaki Aza Aoba, Aoba-ku, Sendai 980-8579, Japan |
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| Abstract: | A new kind of cyclic olefin polymer COP-E48R has been selected as the dielectric material for a silver hollow glass tube. Owing to its lower extinction coefficient at the wavelength of 10.6 μm, transmission losses for the CO2 laser light has been reduced significantly in the COP-E48R-coated silver (COP-E48R/Ag) hollow glass waveguide. By properly selecting the film thickness of COP, Er:YAG and CO2 laser light are shown to be transmitted with low loss simultaneously or independently. Delivery properties of red and green pilot beams were also evaluated. |
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| Keywords: | Hollow waveguides CO2 and Er:YAG lasers Cyclic olefin polymer Pilot beams |
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