Bragg-induced power oscillations in PT -symmetric periodic photonic structures
نویسندگان
چکیده
منابع مشابه
Unidirectional invisibility induced by PT-symmetric periodic structures.
Parity-time (PT) symmetric periodic structures, near the spontaneous PT-symmetry breaking point, can act as unidirectional invisible media. In this regime, the reflection from one end is diminished while it is enhanced from the other. Furthermore, the transmission coefficient and phase are indistinguishable from those expected in the absence of a grating. The phenomenon is robust even in the pr...
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Mohammad-Ali Miri1,∗, Alejandro B. Aceves, Tsampikos Kottos, Vassilios Kovanis, and Demetrios N. Christodoulides CREOL/College of Optics, University of Central Florida, Orlando, Florida 32816, USA Department of Mathematics, Southern Methodist University, Dallas, TX 75275, USA Department of Physics, Wesleyan University, Middletown, Connecticut 06459, USA Air Force Research Laboratory, Sensors Di...
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Light propagation in periodic environments is often associated with a number of interesting and potentially useful processes. If a crystalline optical potential is also linearly ramped, light can undergo periodic Bloch oscillations, a direct outcome of localized Wannier-Stark states and their equidistant eigenvalue spectrum. Even though these effects have been extensively explored in conservati...
متن کاملModelling of Dispersive PT-Symmetric Bragg Grating
This paper reports on the time-domain numerical model of a parity-time Bragg grating with saturated and dispersive gain. The model is compared against the ideal PT scenario where the gain is constant and unsaturated for all frequencies.
متن کاملPT -Symmetric Periodic Optical Potentials
In quantum theory, any Hamiltonian describing a physical system is mathematically represented by a self-adjoint linear operator to ensure the reality of the associated observables. In an attempt to extend quantum mechanics into the complex domain, it was realized few years ago that certain non-Hermitian parity-time (P T ) symmetric Hamiltonians can exhibit an entirely real spectrum. Much of the...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2017
ISSN: 2469-9926,2469-9934
DOI: 10.1103/physreva.96.053841