Digital image facilitates further cultural exchanges while its potential safety hazards is becoming gradually aus- tere. Therefore assembling the characteristic superiorities of optical chaos and embedded hardware, experimental implementation of image encryption is of great academic value and application prospect. In this paper, we ex- perimental implement a color image encryption system based on optical chaos with ARM-embedded hardware. A vertical-cavity surface emitting laser (VCSEL) subject to positive optoelectronic feedback is utilized in the experiment, and the chaotic signal is gained under suitable parameters. The chaotic optical signal is trans- formed into optical chaotic data through an analog-to-digital converter. In our experiment, optical chaotic data dominates the image encryption process where the improved gravity model and the double sine map are served to encrypt the color image. The encrypted image can be conveyed securely through cloud services, and then our hardware board can inerrably decipher the encrypted image. Experimental results visibly illustrate that we successfully realized the encryption of color images.
A novel and compact metal-insulator-metal (MIM) waveguide coupled with dual hexagonal ring resonators is proposed and theoretically investigated using the temporal coupled-mode theory and finite-difference time-domain (FDTD) method. The numerical simulation results indicate that when the resonance wavelengths of the two hexagonal ring resonators differ from each other, the plasmon-induced transparency (PIT) phenomenon can be obtained. Furthermore, this plasmonic device is also demonstrated can be used as a logic device which implements the function of fundamental logical operations XOR and XNOR. This device is of significance to optical computing and optical networks-on-chip, and it may help to open up a new field for the application of surface plasmon polaritons (SPPs).
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.