A simple way to establish a dual-core hollow fiber for laser surgery applications

Chengbin Jing; Wesley Kendall; James A. Harrington

doi:10.1117/12.2222884

7 March 2016 A simple way to establish a dual-core hollow fiber for laser surgery applications

Chengbin Jing, Wesley Kendall, James A. Harrington

Proceedings Volume 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI; 97020D (2016) https://doi.org/10.1117/12.2222884
Event: SPIE BiOS, 2016, San Francisco, California, United States

Abstract

A dual-core hollow fiber has two separate cores for propagation of light. Such a fiber can have some good applications in laser surgery. The dual-core guide can transmit an infrared laser beam for cutting or ablation while a visible laser beam is simultaneously transmitted as a pilot or aiming beam. The traditional fabrication procedure for a dual-core hollow fiber involves chemical vapor deposition (CVD) growth on silica tubing of an inner cladding layer followed by the deposition of a low index polymer on the outside of the tubing. This will provide a hollow structure that has a clad-core-clad tube. This work provides an alternative approach which involves nesting of two hollow waveguides to establish a dual-core hollow fiber. An Ag/AgI hollow glass fiber is fabricated for transmitting CO₂ laser. Another silica glass tube is selected carefully so that its inner diameter is just slightly larger than the outer diameter of the Ag/AgI hollow fiber. The outer surface of the as-selected glass tubing is coated with a low refractive index polymer. The Ag/AgI hollow fiber was inserted into the polymer coated silica glass tubing to establish an air or silicone oil gap between the two tubes. A visible laser beam is transmitted through the outer tube’s core. The CO₂ laser beam is transmitted through the inner Ag/AgI hollow fiber. The dual-core hollow fibers show good transmission for both the red aiming beam and the CO₂ laser. Therefore this structure can be a good candidate for laser surgery applications.

Conference Presentation

Citation Download Citation

Chengbin Jing, Wesley Kendall, and James A. Harrington "A simple way to establish a dual-core hollow fiber for laser surgery applications", Proc. SPIE 9702, Optical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVI, 97020D (7 March 2016); https://doi.org/10.1117/12.2222884

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