Self-Shielded Topological Receiver Protectors

Editor's suggestion in Physical Review Applied

Merging concepts from topological photonics with that of self-induced violation of time-reversal symmetry due to nonlinear losses, the authors aim to design a receiver protectors (RP) that shields sensitive electronics from high-power radiation. The proposed RP is transparent to low-power incident signals, yet self-protected against electrical breakdown and overheating due to high-power input, which triggers an underdamping-to-overdamping transition enforcing a complete reflection of the incident radiation. Such a RP can be utilized to safeguard a broad range of sensitive communication systems, including radar and lidar installations and reflection altimeters.

 

 

Proposed implementation of a receiver-protector based on self-induced spontaneous symmetry breaking of a topological defect state in a radar system. The protector consists of a dimerised chain of weakly coupled dielectric resonators. The topologically protected states is induced by a defect in the regular spacings between resonators. Non-linear losses are introduced via a short-circuited Schottky diode positioned on top of the central defect.


Reference:

Self-Shielded Topological Receiver Protectors

Mattis Reisner, Do Hyeok Jeon, Carsten Schindler, Henning Schomerus, Fabrice Mortessagne, Ulrich Kuhl, and Tsampikos Kottos

Phys. Rev. Applied 13, 034067 (2020)

DOI:https://doi.org/10.1103/PhysRevApplied.13.034067

 

Contact:

Fabrice Mortessagne, fabrice.mortessagne@inphyni.cnrs.fr

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