Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
David Graham Moodie0
Michael James Robertson0
Ian Douglas Henning0
Date of Patent
May 4, 2010
Patent Application Number
11914788
Date Filed
May 18, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
A detector for electromagnetic radiation in the range 80 GHz to 4 THz comprises a laser light source (115) an optical modulator (13) arranged to modulate light from the laser light source (11) and a filter system (17) for selecting a defined range of frequencies of the modulated light. The optical modulator is an electroabsorption modulator (13) with an antenna (15) which is sensitive to electromagnetic radiation in the range 80 GHz to 4 THz. The signal received by the antenna (15) modulates the electric field across the electroabsorption modulator (13), whereby to modulate the light from the laser light source (11).
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