One of the challenges of the modern photonics is to develop all‐optical devices enabling
increased speed and energy efficiency for transmitting and processing information on an …

We investigate the nontrivial characteristics of modulational instability (MI) in a system of
Bragg gratings with saturable nonlinearity. We also introduce an equal amount of gain and …

The present work investigates the switching dynamics of conventional fiber Bragg gratings
(FBGs) with saturable coupling and parity-time (PT)-symmetric fiber Bragg gratings …

We report the role of PT symmetry in switching characteristics of a highly nonlinear fiber
Bragg grating (FBG) with cubic-quintic-septimal nonlinearities. We demonstrate that the …

The central theme of this paper is the analysis of the usefulness of introducing four-wave
mixing or modulation of Kerr nonlinearity in a nonuniform grating structure with gain and …

We study the PT-symmetric periodic layered structure with the modulated Kerr nonlinearity.
We demonstrate that such systems can be transformed from the full to the broken PT …

We theoretically explored the optical bistability in parity-time-symmetric coupled micro-
cavities, where two cavities are coupled by photon tunnelling; one of the cavities contains …

In recent years, the field of PT-symmetry has witnessed a surge of research interest due to its
ability to exploit even the losses of the system. PT-symmetry and its implications have been …

We explore the consequences of incorporating parity and time reversal (PT) symmetries on
the dynamics of nonreciprocal light propagation exhibited by a class of nonuniform periodic …

In this paper, a unique one-dimensional double anti-PT-symmetric ring optical waveguide
network (1D DAPTSROWN) is designed whose refractive index satisfies n (x)=− n∗(− x). The …