Optical polarization sensitive ultra-fast switching and photo-electrical device

Jérémy Belhassen, Zeev Zalevsky, Avi Karsenty

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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.

Original languageEnglish
Article number1743
Issue number12
StatePublished - Dec 2019

Bibliographical note

Publisher Copyright:
© 2019 by the authors. Licensee MDPI, Basel, Switzerland.


  • Decryption
  • Electro-optical coupling
  • Encryption
  • Evanescent waves
  • Nanoscale optical modulator
  • Optical switching
  • Polarization
  • Simulations
  • V-groove
  • Wavelength aperture


Dive into the research topics of 'Optical polarization sensitive ultra-fast switching and photo-electrical device'. Together they form a unique fingerprint.

Cite this