Accession Number : ADD016507

Title :   Electromagnetic Radiation Detector Utilizing an Electromagnetic Radiation Absorbing Element in a Mach-Zehnder Interferometer Arrangement.

Descriptive Note : Patent, Filed 30 Sep 92, patented 20 Sep 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bobb, Lloyd C

Report Date : 20 Sep 1994

Pagination or Media Count : 5

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 therebetween. 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, *PATENTS, *FIBER OPTICS, *OPTICAL WAVEGUIDES, *INFRARED DETECTORS, INTERFACES, INTERFEROMETERS, RADIATION, WAVEGUIDES, ELECTROMAGNETIC SPECTRA

Subject Categories : Infrared Detection and Detectors
      Fiber Optics and Integrated Optics
      Electrooptical and Optoelectronic Devices

Distribution Statement : APPROVED FOR PUBLIC RELEASE