An optical leaky wave antenna with silicon perturbations for electronic control

Salvatore Campione; Qi Song; Ozdal Boyraz; Filippo Capolino

doi:10.1117/12.896227

7 September 2011 An optical leaky wave antenna with silicon perturbations for electronic control

Salvatore Campione, Qi Song, Ozdal Boyraz, Filippo Capolino

Proceedings Volume 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V; 81200G (2011) https://doi.org/10.1117/12.896227
Event: SPIE Photonic Devices + Applications, 2011, San Diego, California, United States

Abstract

An optical leaky wave antenna (OLWA) is a device that radiates a light wave into the surrounding space from a leaky wave (LW) guided mode or receives optical power from the surrounding space into a guided optical mode. In this work, we propose and provide a 3D analysis of a novel CMOS compatible OLWA made of a silicon nitride (Si₃N₄) waveguide comprising periodic silicon perturbations which allow electronic tuning capability. The analysis presented here includes the effect of the number of semiconductor perturbations, the antenna radiation pattern and directivity. We show that the number of the silicon perturbations has to be large to provide a long radiating section required to achieve radiation with high directivity. In other words, the proposed structure allows for a very narrow-beam radiation. Preliminary results are confirmed by exploiting leaky wave and antenna array factor theory, as well as verified by means of two full-wave simulators (HFSS and COMSOL). Our purpose is to ultimately use PIN junctions as building blocks for each silicon implantation for the electronic control of the radiation. In particular, the electronic tunability of the optical parameters of silicon (such as refractive index and absorption coefficient) via current injection renders itself the ideal platform for optical antennas that can facilitate electronic beam control, and boost the efficiency of optoelectronic devices such as light-emitting diodes, lasers and solar cells, and bio-chemical sensors.

Citation Download Citation

Salvatore Campione, Qi Song, Ozdal Boyraz, and Filippo Capolino "An optical leaky wave antenna with silicon perturbations for electronic control", Proc. SPIE 8120, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications V, 81200G (7 September 2011); https://doi.org/10.1117/12.896227

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