We present a theoretical investigation of dominated mode switching and nanoparticle
detection at a wavelength of 2 µm that uses coupled whispering gallery mode (WGM) …

In this paper we construct PT symmetric 1D multi-mode ring resonator arrays to study the
high-order exceptional points and related light transmission spectra. We first focus on arrays …

The antiresonant effects, which are opposite to the resonant effects, describe the destructive
interferences that occur in optical resonators. There is a growing trend in the recent …

Two slabs of dielectrics with different values of refractive index are synthesized to form a
composite structure and the whole system satisfies parity-time-reciprocal scaling symmetry …

In this paper, we propose a deformed Reuleaux-triangle resonator (RTR) to form exceptional
point (EP) which results in the detection sensitivity enhancement of nanoparticle. After …

Non-Hermitian system has attracted extensive attention, which possesses real eigenvalues
if the Hamiltonian satisfies the parity-time (PT) symmetry. In this paper, we adopt the concept …