Zinc chloride optical fibers for transmission in the infrared

US4189208A · kind A · utility

Assignee

• Bell Telephone Laboratories, Inc. · US

Inventors

• William H. Grodkiewicz · New Providence, US
• LeGrand G. Van Uitert · Morristown, US
• Stuart H. Wemple · Madison, US

Key dates

• Filing date: Mar 10, 1978
• Grant date: Feb 19, 1980
• Expiry date: Mar 10, 1998

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S65/16
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

ZnCl.sub.2 optical fibers are advantageously used for transmission of radiation in the infrared portion of the spectrum. Losses as low as 10.sup.-3 dB/km may be obtained when radiation of wavelength between 3.0 and 4.5 microns is transmitted in such fibers. Fabrication techniques allow for the formation of graded fibers to further improve transmission characteristics.