Freescale Semiconductor,inc.

Eric Toussaere

Patrick Labbe

David Bateman

Arianna Filoramo

Jean-Noel Patillon

Joseph Zyss

An optical to radio frequency detector comprises an optical guide for receiving two optical signal components having frequencies that differ by an amount corresponding to a radio frequency, and a radio signal guide coupled with an interaction zone of the optical guide for propagating a radio signal from the interaction zone at the radio frequency. The material of the interaction zone presents a second-order non-linear optical polarization characteristic to the propagation of the optical signal components, and the radio signal guide is in travelling-wave coupling with the interaction zone. A radio signal output is coupled with the radio signal guide.

Optical to radio frequency detector

A detector or a modulator for converting between optical and radio frequency signals comprising an optical guide (to) for propagating two optical signal components having frequencies that differ by an amount corresponding to a radio frequency and a microstrip radio signal guide () for propagating a radio signal at the radio frequency, the microstrip radio signal guide being in travelling-wave coupling with an interaction one () of the optical guide comprising material in which interaction between the optical signal components and the radio signal occur. The microstrip radio signal guide element () comprises an electrically conductive strip () juxtaposed with and extending along the interaction zone () on one side thereof and an electrically conductive ground plane () juxtaposed with and extending along the interaction zone () on an opposite side thereof. Transition radio signal guide elements () in the form of Vivaldi antennas extending transversely to the microstrip () connect the microstrip radio signal guide element () with a rectangular section wave-guide () and a matched load. Each of the transition radio signal guide elements () comprises an opening of progressively varying width formed in the electrically conductive ground plane of the microstrip guide (). Radio frequency signal resonators (to) extend the ends of the microstrip () and the small ends of the Vivaldi antennas.

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Gif-sur-Yvette, France

Eric Toussaere