Title :
A compact prototype optical processor for X-band arrays
Author :
Anderson, D.Z. ; Fotheringham, E. ; Romisch, S. ; Smith, P.C. ; Popovic, Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
Presents the realization and preliminary characterization of a compact two-channel optical processor for an X-band antenna array. This lens array partially separates the signals based on their angle of arrival. The received audio-modulated signals, downconverted to HF band, drive a two-channel electro-optic modulator. The optical beam is carrier suppressed and sent to a miniature adaptive photorefractive oscillator that separates the signals based on their strength and correlation. The optical output is detected, demodulated and sent to a speaker. The system fits in a 33/spl times/45/spl times/15cm briefcase and consumes less than 20W. The prototype is also equipped with portable transmitters for on-site demonstration purposes.
Keywords :
adaptive antenna arrays; adaptive signal processing; lens antennas; microwave antenna arrays; microwave photonics; nonlinear optics; optical information processing; 20 W; X-band antenna array; adaptive photorefractive oscillator; angle of arrival; audio-modulated signals; correlation; lens array; optical output; portable transmitters; two-channel electro-optic modulator; two-channel optical processor; Antenna arrays; Electrooptic modulators; Hafnium; Lenses; Optical arrays; Optical beams; Optical modulation; Optical transmitters; Photorefractive effect; Prototypes;
Conference_Titel :
Microwave Photonics, 2001. MWP '01. 2001 International Topical Meeting on
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
0-7803-7003-1
DOI :
10.1109/MWP.2002.981837
