Accession Number:

ADA091558

Title:

Low-Loss Fiber Waveguides.

Descriptive Note:

Annual technical rept. 1 Aug 79-31 Jul 80,

Corporate Author:

HUGHES RESEARCH LABS MALIBU CA

Personal Author(s):

Report Date:

1980-10-01

Pagination or Media Count:

68.0

Abstract:

This report summarizes efforts to fabricate low-loss fiber waveguides with potential loss near 0.001 dBkm. To develop such low-loss fibers requires producing fiber from unconventional, non-oxide materials such as the metal halides or some special fluoride glasses. Specifically, our approach has been to use alkali and thallium halides because these crystalline materials have, in the case of KC1, some of the lowest bulk losses measured to date at IR wavelengths. The first method used to fabricate KC1 fiber was extrusion. Although this method had worked well for the thallium halides, it proved unsuccessful for KC1 and other alkali halides. In every case, extruded KC1 or CsI and PbC12 fiber had an irregular, fish-scale surface, from which we concluded that extrusion techniques should be abandonde for the alkali halides. Hot rolling was used to make one 50-cm-long KC1 fiber with improved surface quality compared to extrusion. Studies of the optical properties of our fibers and bulk materials concentrated on determining the scattering and absorption contributions to the total attenuation.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Fabrication Metallurgy
  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE