29 citations · 54 across the 7 of their papers we have counts for
8 papers
Higher order Conjugate Exceptional Points in an 1D Photonic Bandgap Waveguide
Sibnath Dey, Harish N S Krishnamoorthy, Somnath Ghosh
We demonstrate third-order conjugate exceptional points (EPs) in a gain-loss assisted multi-mode 1D complementary photonic bandgap waveguide. Our study reveals the higher-order mod…
Hosting exceptional points in 1D photonic bandgap waveguide for mode engineering
Sibnath Dey, Somnath Ghosh
We report a planar 1D photonic bandgap waveguide exhibiting four second-order exceptional points (EP2s). The interactions between the selective pairs of supported quasi-guided TE m…
Exotic light dynamics around a fourth order exceptional point
Sibnath Dey, Arnab Laha, Somnath Ghosh
The physics of exceptional point (EP) singularities, has been a key to a wide range of unique physical applications in open systems. In this context, the mutual interactions among…
Nonadiabatic Modal Dynamics Around a Third-order Exceptional Point in a planar waveguide
Sibnath Dey, Arnab Laha, Somnath Ghosh
Dynamical parametric encirclement around an Exceptional Point (EP) and corresponding asymmetric state transfer phenomenon have attracted considerable attention recently. In this co…
Third-order Exceptional Point and Successive Switching among Three States in a Degenerate Optical Microcavity
Arnab Laha, Dinesh Beniwal, Sibnath Dey +2
One of the most intriguing topological features of open systems is exhibiting exceptional point (EP) singularities. Apart from the widely explored second-order EPs (EP2s), the expl…
Nonlinearity Induced Anomalous Mode Collapsing and Non-chiral Asymmetric Mode Switching around multiple Exceptional Points
Sibnath Dey, Arnab Laha, Somnath Ghosh
The dynamical encirclement around a second order exceptional point (EP) and corresponding chirality driven nonadiabatic modal dynamics have attracted enormous attention in the topo…
Exceptional Point and Toward Mode Selective Optical Isolation
Arnab Laha, Sibnath Dey, Harsh K. Gandhi +2
Dynamical encirclement of an Exceptional Point (EP) and corresponding time-asymmetric mode evolution properties due to breakdown in adiabatic theorem have been a key to range of ex…
Optical waveguide hosting multiple exceptional points: Toward selective mode conversion
Arnab Laha, Harsh K. Gandhi, Sibnath Dey +3
We investigate the astonishing physical aspects of Exceptional Points (EPs) in a 1D planar few-mode optical waveguide. The waveguide hosts four quasi-guided modes. Here interaction…