Tapered and noncircular hollow glass waveguides

Daniel J. Gibson; James A. Harrington

doi:10.1117/12.346714

21 April 1999 Tapered and noncircular hollow glass waveguides

Proceedings Volume 3596, Specialty Fiber Optics for Medical Applications; (1999) https://doi.org/10.1117/12.346714
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

Linearly tapered hollow-glass waveguides (HGW) were fabricated using tapered silica glass tubing and wet chemistry techniques. Attenuation constants for these tapered HGWs were found to be higher than for similarly sized non-tapered HGWs, but the tapered guides showed reduced loss on bending. HGWs with rectangular and square cross-sections were also fabricated from non-circular bore silica glass tubing using wet chemistry techniques. These guides were able to maintain linear polarization of CO₂ laser light better than circular bore HGWs fabricated by the same methods, with as high as 97% of the input polarization preserved for a 227 μm X 1253 μm bore guide. The non-circular bore HGWs had higher attenuation constants than similarly sized circular bore HGWs and sacrificed some spatial purity of the output beam.

Citation Download Citation

Daniel J. Gibson and James A. Harrington "Tapered and noncircular hollow glass waveguides", Proc. SPIE 3596, Specialty Fiber Optics for Medical Applications, (21 April 1999); https://doi.org/10.1117/12.346714

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