Metal Dielectric Films As Materials For Infrared Hollow Fibers

N. Croitoru; J. Dror; E. Goldenberg; D. Mendlovic; S. Ruschin

doi:10.1117/12.967350

1 January 1987 Metal Dielectric Films As Materials For Infrared Hollow Fibers

N. Croitoru, J. Dror, E. Goldenberg, D. Mendlovic, S. Ruschin

Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967350
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada

Abstract

In recent years, because of important applications in medicine and communications that require fibers of a wavelength longer than 2 μm, most intensive investigation of materials for this purpose has begun. An important group of materials that we have investigated is that of chalcogenide glasses1'2' suitable for drawn fibers that can be used for transmission of the CO₂ laser radiation (10.6 um). This material, however, has some disadvantages preventing it from practical application. We have devised a new type of hollow fiber made from plastic tubes and covered on the inside wall with metallic and dielectric films. This double film enables the fiber to have a very low attenuation even when being bent. A theoretical ray model that simulated the laser beam propagation through a hollow fiber covered with these films has been made to devise the waveguide behaviour. This model took into account parameters such as: radius of curvature (R); cross-section radius (r); influence of dielectric film (on top of the inner metal film), and influence of light polarization.

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N. Croitoru, J. Dror, E. Goldenberg, D. Mendlovic, and S. Ruschin "Metal Dielectric Films As Materials For Infrared Hollow Fibers", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967350

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KEYWORDS

Waveguides

Dielectrics

Metals

Dielectric polarization

3D modeling

Infrared radiation

Signal attenuation

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