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Experimental studies of plasmonics-enhanced optical physically unclonable functions
Optics Express
|October 7, 2021
Summary
We enhanced optical Physically Unclonable Functions (PUFs) using plasmonic nanoparticles in silicon structures. These plasmonic PUFs show promising responses to polarized light, offering a simple method for improved security.
Area of Science:
- Integrated Optics
- Nanophotonics
- Quantum Information Science
Background:
- Physically Unclonable Functions (PUFs) are crucial for hardware security.
- Existing optical PUFs can be enhanced for improved performance and reliability.
- Plasmonic metal nanoparticles offer unique optical properties for device integration.
Purpose of the Study:
- To experimentally investigate optical PUFs integrated with plasmonic metal nanoparticles.
- To evaluate different configurations of nanoparticle distributions for PUF behavior.
- To analyze the stability and security of these enhanced PUF devices.
Main Methods:
- Fabrication of Silicon on Insulator (SOI) based structures with plasmonic nanoparticles.
- Experimental testing of PUF response using transverse magnetic (TM) polarized light.
- Comprehensive analysis of power, thermal, and polarization stability.
Main Results:
- Demonstrated PUF behavior based solely on nanoparticle distribution.
- Observed promising responses with TM polarized light.
- Confirmed the potential for an easy-to-implement enhancement methodology for optical PUFs.
Conclusions:
- Plasmonic nanoparticle integration significantly enhances optical PUF performance.
- The proposed structures offer a viable and robust approach to hardware security.
- The devices exhibit good stability against potential side-channel attacks.
