Accession Number : ADD016290

Title :   Depolarized Light Source for Fiber Optic Sensors.

Descriptive Note : Patent, Filed 13 Dec 91, patented 1 Mar 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Burns, William K ; Moeller, Robert P ; Howerton, Marta M

Report Date : 01 Mar 1994

Pagination or Media Count : 10

Abstract : An apparatus comprised of a depolarized light source for fiber optic sensors is disclosed. In a preferred embodiment, the depolarized light source of the apparatus comprises: a first laser for generating a first beam at a first frequency, the first beam having a linear polarization state; a second laser for generating a second beam at a second frequency, the second beam having a linear polarization state; a means for rotating the polarization state of the second beam so that the first and second beams have orthogonal linear polarization states with respect to each other; and a means for combining the first beam with the polarization-rotated second beam to obtain a composite beam which is depolarized.

Descriptors :   *FIBER OPTICS, *LIGHT SOURCES, *OPTICAL DETECTORS, *PATENTS, FREQUENCY, LASERS, LINEAR POLARIZATION, POLARIZATION, DEPOLARIZATION, LASER BEAMS, BEAM SPLITTING, ELECTROMAGNETIC WAVE PROPAGATION

Subject Categories : Fiber Optics and Integrated Optics
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE