Accession Number : ADA132311

Title :   Preparation of Infrared Optic Fibers Using New Materials.

Descriptive Note : Final technical rept. 1 Oct 81-31 Mar 83,

Corporate Author : STANFORD UNIV CA CENTER FOR MATERIALS RESEARCH

Personal Author(s) : Feigelson,R S ; Route,Roger K

PDF Url : ADA132311

Report Date : Jul 1983

Pagination or Media Count : 47

Abstract : This report summarizes an eighteen-month program on the preparation and characterization of optical fibers which have low losses and are transparent in the infrared range. The objectives were to study preparative techniques, compositional and optical properties, and factors which influence fiber growth techniques. The emphasis of this program was on single crystal fibers in the size range from 100 - 1000 micrometer diameter. Single crystal fibers were produced in limited lengths using two techniques: the laser heated pedestal growth technique for high-melting materials, and the capillary-fed fiber growth method for low-melting and for volatile materials. The materials studied were selected from those which have a high potential for low loss at wavelengths greater than 1.5 micrometers, and included BaF2, CaF2, AgBr, and KRS-5. The fibers were analyzed using metallographic, optical, XRD, and energy dispersive analytical techniques. Critical system and growth parameters were studied, and factors which correlated with the occurrence of internal structural and optical defects were identified. This study demonstrated the feasibility of growing a range of IR fibers with both the laser-heated pedestal and the capillary-fed growth techniques.

Descriptors :   *Fiber optics, *Infrared optical materials, Fabrication, Low loss, Transparence, Infrared spectra, Preparation, Methodology, Composition(Property), Optical properties, Single crystals, Crystal growth, Lasers, Heating, Barium, Fluorides, Calcium, Silver, Bromides, Defects(Materials)

Subject Categories : Crystallography
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE