TE waves in a cylindrical superlattices (LANs) and left handed material (LHm) waveguide structure

The propagation characteristics of TE waves in a cylindrical waveguide structure of a lateral antiferromagnetic -non magnetic superlattices (LANs) bounded by a left handed material (LHM) are investigated. We found that, adjusting the thickness of the waveguide to small reduced radius will support backward TE wave modes which can have very large effective index n_x. At large reduced radius the forward waves of definite wave index and lower frequency are observed. Larger propagation lengths and constant power of the backward waves are realized by decreasing the values of negative electric permittivity ε_h of LHm. By decreasing the magnetic fraction f₁ of (LANS), the backward waves hare getting higher power.