13 citations · 20 across the 4 of their papers we have counts for
4 papers
Asymmetric optical amplifier based on parity-time symmetry
Rujiang Li, Pengfei Li, Lu Li
We design and optimize a waveguide structure consisted of three segments of PT-symmetric coupler. It can amplify the difference mode with the attenuation of the sum mode, so perfor…
Beam Dynamics in a Double-Channel Waveguide with Gain and Loss
Pengfei Li, Rujiang Li, Lu Li
A double-channel waveguide with gain and loss is addressed and the corresponding coupled-mode equations are established by employing the coupled mode approach. Based on the coupled…
Optical Modes in PT-Symmetric Double-Channel Waveguides
Li Chen, Rujiang Li, Na Yang +2
We investigate the unique properties of various analytical optical modes, including the fundamental modes and the excited modes, in a double-channel waveguide with parity-time (PT)…
Symmetry breaking and manipulation of nonlinear optical modes in an asymmetric double-channel waveguide
Rujiang Li, Fei Lv, Lu Li +1
We study light-beam propagation in a nonlinear coupler with an asymmetric double-channel waveguide and derive various analytical forms of optical modes. The results show that the s…