Accession Number : ADD016114

Title :   Optical Fiber Electromagnetic Radiation Detector.

Descriptive Note : Patent Application, Filed 30 Sep 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bobb, Lloyd

Report Date : 30 Sep 1992

Pagination or Media Count : 12

Abstract : Apparatus is provided to detect electromagnetic radiation, in which a radiation-absorbing element is disposed on a short section of an optical waveguide to provide a thermal interface there between. Radiation is absorbed by the element, which thereby heats the waveguide, causing it to change its optical pathlength in proportion to the radiation absorbed. Interferometer apparatus is connected to measure this change in optical pathlength as a change in the interference condition. This device is highly sensitive and can be operated at room temperature.

Descriptors :   *ELECTROMAGNETIC RADIATION, *OPTICAL WAVEGUIDES, *INFRARED DETECTORS, INTERFACES, PATENT APPLICATIONS, PATHS, INTERFEROMETERS, RADIATION, ROOM TEMPERATURE, ELECTROMAGNETIC INTERFERENCE, OPTICAL INTERFEROMETERS

Subject Categories : Infrared Detection and Detectors
      Fiber Optics and Integrated Optics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE