Ultrabroadband beam splitting in a dissipative system of three waveguides
Ultrabroadband beam splitting in a dissipative system of three waveguides
We show that a system of three parallel waveguides, among which the central one is dissipative, leads to an ultrabroadband power splitting associated with an overall 50% power loss. The present approach is reminiscent of non-Hermitian systems in quantum mechanics and does not require a perfect effective index matching between …