Study of optical fiber damage under tight bend with high optical power at 2140 nm -- MEDICA - World Forum for Medicine

13.11.2020

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Study of optical fiber damage under tight bend with high optical power at 2140 nm

ABSTRACT

Expanding medical applications of laser power have resulted in an increase in demand for silica optical fibers, but these applications often require the fiber to endure the damaging combination of high laser power levels and increasingly tighter bends. In this study, we examine the damage to step index multimode fibers transmitting Ho:YAG laser light at a wavelength of 2140 nm when bent to a radius down to 5 mm and carrying an average power of up to 100 W. The results of different types of fibers are compared to gain more knowledge about the failure mechanism, among other relevant issues.

Keywords: Step index fibers, laser power delivery, Ho:YAG laser, bend and high power, laser damage

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