Letter abstract
Nature Photonics 1, 535 - 538 (2007)
Published online: 19 August 2007 | doi:10.1038/nphoton.2007.145
Subject Categories: Imaging and sensing | Optoelectronic devices and components | Fibre optics and optical communications
All-dielectric photonic-assisted radio front-end technology
Rick C. J. Hsu1, Ali Ayazi1, Bijan Houshmand1 & Bahram Jalali1
Abstract
The threats to civil society posed by high-power electromagnetic weapons are viewed as a grim but real possibility in the world after 11 September 2001 (refs 1–3). These weapons produce a power surge capable of destroying or damaging sensitive circuitry in electronic systems. Unfortunately, the trend towards circuits with smaller sizes and voltages renders modern electronics highly susceptible to such damage. Radiofrequency communication systems are particularly vulnerable, because the antenna provides a direct port of entry for electromagnetic radiation. Here, we report a type of radiofrequency receiver front end featuring a complete absence of electronic circuitry and metal interconnects, the traditional 'soft spots' of a conventional radiofrequency receiver. The device exploits a dielectric resonator antenna to capture and deliver the radiofrequency signal onto an electro–optic field sensor. The dielectric approach has an added benefit in that it reduces the physical size of the front end, an important benefit in mobile applications.
- Department of Electrical Engineering, University of California, Los Angeles, California 90095-1594, USA
Correspondence to: Bahram Jalali1 e-mail: jalali@ucla.edu
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