Optical isolation via 𝒫 𝒯 -symmetric nonlinear Fano resonances.
We show that Fano resonances created by two 𝒫 𝒯 -symmetric nonlinear micro-resonators coupled to a waveguide, have line-shape and resonance position that depends on the direction of the incident light. We utilize these features in order to induce asymmetric transport, up to 47 dBs, in the optical C-window. Our theoretical proposal requires low input power and does not compromise the power or frequency characteristics of the output signal.
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F
Nazari
N
N
Bender
H
H
Ramezani
M K
MK
Moravvej-Farshi
D N
DN
Christodoulides
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T
Kottos