Single-mode waveguide optical isolator based on direction-dependent cutoff frequency.
A single-mode-waveguide optical isolator based on propagation direction dependent cut-off frequency is proposed. The isolation bandwidth is the difference between the cut-off frequencies of the lowest forward and backward propagating modes. Perturbation theory is used for analyzing the correlation between the material distribution and the bandwidth. The mode profile determines an appropriate distribution of non-reciprocal materials.
Tang
Lingling
L
Department of Electrical and Computer Engineering, Fitzpatrick Institute for Photonics, Duke University, Durham, NC 27708-0291, USA. lingling.tang@duke.edu
Drezdzon
Samuel M
SM
Yoshie
Tomoyuki
T
D000465:Algorithms; D003198:Computer Simulation; D004867:Equipment Design; D008027:Light; D015233:Models, Statistical; D008962:Models, Theoretical; D055095:Optics and Photonics; D012542:Scattering, Radiation