Fourier Optics and Optical Signal Processing

Silicon-photonics-based wideband radar beamforming: basic design

[+] Author Affiliations
Sasan Fathpour

University of Central Florida, CREOL, The College of Optics and Photonics, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700

Nabeel A. Riza

University of Central Florida, CREOL, The College of Optics and Photonics, 4000 Central Florida Boulevard, Orlando, Florida 32816-2700

Opt. Eng. 49(1), 018201 (January 07, 2010). doi:10.1117/1.3280286
History: Received July 28, 2009; Revised November 05, 2009; Accepted November 11, 2009; Published January 07, 2010; Online January 07, 2010
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Proposed is silicon-photonics-based phased array antenna beamforming for high-resolution long-range radars with wide instantaneous radio frequency (rf) bandwidth. Specifically, the proposed silicon-photonics beamformer platform offers the potential for cost-effective monolithic chip-scale integration of photonic delay lines, 2×2 optical switches, variable optical attenuators, and optical amplifiers that form the base unit of a rf transmit/receive array signal processor. In effect, the proposed silicon-photonics devices empower the design of a powerful proposed photonic beamformer with one time-delay unit per antenna element. Device-level designs studies are shown that promise meeting the high-resolution radar mission-critical requirements via time delays of up to 2.5ns, switching times of less than 100ns, optical isolations as good as 50dB, and optical gains of up to 6dB. Longer delays are achieved off chip using optical fibers.

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© 2010 Society of Photo-Optical Instrumentation Engineers

Citation

Sasan Fathpour and Nabeel A. Riza
"Silicon-photonics-based wideband radar beamforming: basic design", Opt. Eng. 49(1), 018201 (January 07, 2010). ; http://dx.doi.org/10.1117/1.3280286


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