<p>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).</p>
申请公布号
WO2006123162(A1)
申请公布日期
2006.11.23
申请号
WO2006GB01846
申请日期
2006.05.18
申请人
THE CENTRE FOR INTEGRATED PHOTONICS LIMITED;UNIVERSITY OF ESSEX;MOODIE, DAVID, GRAHAM;ROBERTSON, MICHAEL, JAMES;HENNING, IAN, DOUGLAS
发明人
MOODIE, DAVID, GRAHAM;ROBERTSON, MICHAEL, JAMES;HENNING, IAN, DOUGLAS