Cheng Gong, Nan Zhang, Zijie Dai, Weiwei Liu,
https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10697/106974M/Optical-programmable-metamaterials/10.1117/12.2309751.short
We suggest and demonstrate the concept of
optical programmable metamaterials which can configure the device’s
electromagnetic parameters by the programmable optical stimuli. In such
metamaterials, the optical stimuli produced by a FPGA controlled light emitting
diode array can switch or combine the resonance modes which are coupled in. As
an example, an optical programmable metamaterial terahertz absorber is
proposed. Each cell of the absorber integrates four meta-rings (asymmetric 1/4
rings) with photo-resistors connecting the critical gaps. The principle and
design of the metamaterials are illustrated and the simulation results
demonstrate the functionalities for programming the metamaterial absorber to
change its bandwidth and resonance frequency.
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