Title :
Large area W-band quasi-optical faraday rotators for imaging applications
Author :
Hunter, R.I. ; Robertson, D.A. ; Goy, P. ; Smith, G.M.
Author_Institution :
Sch. of Phys. & Astron., St Andrews Univ., UK
Abstract :
We have developed W-band large area Quasi-Optical Faraday Rotators (QOFRs) for millimetre wave imagers, where they are used to achieve compact folded optics or for receiver local oscillator suppression. Devices of 600mm square (for 80-100GHz) and 265mm circular diameter (for 92-96GHz) achieved insertion losses of 1dB and isolations of 30 to 40dB using a novel construction technique which helps overcome the linear birefringence of plastoferrite.
Keywords :
birefringence; millimetre wave imaging; optical isolators; 1 dB; 265 mm; 600 mm; 92 to 96 GHz; W-band quasi-optical faraday rotator; compact folded optics; imaging application; insertion loss; linear birefringence; millimetre wave imager; oscillator suppression; plastoferrite; Birefringence; Ferrites; Insertion loss; Isolators; Local oscillators; Magnetic materials; Optical imaging; Optical losses; Optical receivers; Sheet materials;
Conference_Titel :
Infrared and Millimeter Waves and 13th International Conference on Terahertz Electronics, 2005. IRMMW-THz 2005. The Joint 30th International Conference on
Print_ISBN :
0-7803-9348-1
DOI :
10.1109/ICIMW.2005.1572515
