Accession Number : ADD015938

Title :   Photonic Electromagnetic Field Sensor Apparatus.

Descriptive Note : Patent, Filed 30 Sep 92, patented 7 Sep 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Hilliard, Donald P ; Mensa, Dean L

Report Date : 07 Sep 1993

Pagination or Media Count : 13

Abstract : An electromagnetic field sensor apparatus which measures the amplitude, phase, frequency and polarization of an incoming electromagnetic field as well as the angle of arrival of an incident electromagnetic field. A Luneberg lens focuses an incoming electromagnetic wave entering on one side of the Luneberg lens onto a point on the opposite side of the lens. A pair of photonic sensor which may be electro-optic modulators or Pockel cells are positioned on the Luneberg lens at the point upon which the incident electromagnetic wave is focused. The sensing axis of one of the electro-optic modulators is perpendicular to the sensing axis of the other electro-optic modulator. Polarized light is provided to each photonic sensor along an optical path which passes through the sensor. Each photonic sensor modulates the polarized light passing therethrough when the photonic sensor detects the incident electromagnetic wave.

Descriptors :   *ELECTROMAGNETIC FIELDS, *PATENTS, *PHOTODETECTORS, *ELECTROMAGNETIC WAVE PROPAGATION, AMPLITUDE, ANGLE OF ARRIVAL, FREQUENCY, LIGHT, MODULATORS, OPTICS, PATHS, PHASE, PHOTONICS, POLARIZATION, LUNEBERG LENSES, LIGHT SOURCES, OPTICAL DETECTORS

Subject Categories : Optical Detection and Detectors
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE