Accession Number : ADD018281

Title :   Fiber Bragg Gratings in Chalcogenide or Chalcohalid Based Infrared Optical Fibers.

Descriptive Note : Patent Application, Filed 30 Sep 96,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Moon, John A ; Busse, Lynda E ; Sanghera, Jasbinder S ; Aggarrwal, Ishawar D

PDF Url : ADD018281

Report Date : 30 Sep 1996

Pagination or Media Count : 22

Abstract : A reflective Bragg grating in the interior of an infrared transmitting glass fiber, and a method for fabricating such reflective Bragg grating in the interior of the infrared transmitting glass fiber is disclosed. The method comprises the steps of: producing first and second writing beams at the same wavelength; orienting the first and second writing beams in parallel with respect to each other; crossing the first and second writing beams at a preselected angle with respect to each other to form an interference pattern at the intersection of the first and second writing beams; positioning the infrared transmitting glass fiber at the intersection of the first and second writing beams so that the interference pattern occurs along a portion of the length of the infrared transmitting glass fiber; and maintaining the infrared transmitting glass fiber at the intersection of the first and second writing beams for a time 7 sufficient to produce a Bragg grating in the core and cladding of the infrared transmitting glass fiber.

Descriptors :   *PATENT APPLICATIONS, *GRATINGS(SPECTRA), FIBER OPTICS, BIREFRINGENCE, INFRARED TRANSMITTERS, DICHROISM, BRAGG ANGLE, INTERFERENCE ANALYZERS

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE