685 citations · 864 across the 6 of their papers we have counts for
4 papers · 1 filter
Perfect Impedance-Matched Isolators and Unidirectional Absorbers
J. M. Lee, Z. Lin, H. Ramezani +4
A broad-band reflectionless channel which supports unidirectional wave propagation originating from the interplay between gyrotropic elements and symmetrically placed gain and loss…
PT-Symmetric Talbot Effects
Hamidreza Ramezani, D. N. Christodoulides, V. Kovanis +2
We show that complex PT-symmetric photonic lattices can lead to a new class of self-imaging Talbot effects. For this to occur, we find that the input field pattern, has to respect…
Bragg solitons in nonlinear PT-symmetric periodic potentials
Mohammad-Ali Miri, Alejandro B. Aceves, Tsampikos Kottos +2
It is shown that slow Bragg soliton solutions are possible in nonlinear complex parity-time (PT) symmetric periodic structures. Analysis indicates that the PT-symmetric component o…
Unidirectional Nonlinear PT-symmetric Optical Structures
Hamidreza Ramezani, Tsampikos Kottos, Ramy El-Ganainy +1
We show that non-linear optical structures involving a balanced gain-loss profile, can act as unidirectional optical valves. This is made possible by exploiting the interplay betwe…