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Open AccessArticle

Optical Polarization Sensitive Ultra-Fast Switching and Photo-Electrical Device

1
Grenoble Institute of Technology (Grenoble INP), Photonics and Semiconductors Section, Grenoble-Alpes University (UGA), 38400 Saint-Martin-d’Hères, France
2
Advanced Laboratory of Electro-Optics (ALEO), Department of Applied Physics/Electro-Optics Engineering, Faculty of Engineering, Lev Academic Center, Jerusalem 9116001, Israel
3
Faculty of Engineering, Bar-Ilan University, Ramat Gan 52900, Israel
4
The Nanotechnology Center, Bar-Ilan University, Ramat Gan 52900, Israel
5
The Nanotechnology Center for Education and Research, Lev Academic Center, Jerusalem 911600, Israel
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1743; https://doi.org/10.3390/nano9121743
Received: 30 October 2019 / Revised: 2 December 2019 / Accepted: 3 December 2019 / Published: 7 December 2019
(This article belongs to the Special Issue Nano Fabrications of Solid-State Sensors and Sensor Systems)
Ultra-fast electrical switches activated with an optical-polarized light trigger, also called photo-polarized activated electrical switches, are presented. A set of new transistor circuits is switched by light from above, illuminating deep V-grooves, whose angle is sensitive to the polarization of the incident. Thus, this application may serve for encryption/decryption devices since the strongest electrical responsivity is only obtained for very specific spatial polarization directions of the illumination beam. When this V-groove is sufficiently narrow, the device mainly responds to one polarization and not to the other. In such a way, electrons are generated only for one specific polarization. While the nature of the data remains electronic, the modulation control is optic, creating a photo-induced current depending on the polarization direction. This coupled device acts as a polarization modulator as well as an intensity modulator. The article focuses on the integration of several devices in different configurations of circuitry: dual, triple, and multi-element. Case studies of several adjacent devices are presented with varying critical variables, such as the V-groove aperture dimensions. Analytical models and complementary numerical analyses are presented for the future smooth integration into Complementary Metal-Oxide-Semiconductor (CMOS) technology. View Full-Text
Keywords: optical switching; Encryption; decryption; V-groove; nanoscale optical modulator; electro-optical coupling; polarization; simulations; evanescent waves; wavelength aperture optical switching; Encryption; decryption; V-groove; nanoscale optical modulator; electro-optical coupling; polarization; simulations; evanescent waves; wavelength aperture
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MDPI and ACS Style

Belhassen, J.; Zalevsky, Z.; Karsenty, A. Optical Polarization Sensitive Ultra-Fast Switching and Photo-Electrical Device. Nanomaterials 2019, 9, 1743.

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