Experimental demonstration of spectral non-reciprocity and unidirectionality in volumetric and printed magnetic photonic crystals Conference

Sertel, K, Zhang, L, Apaydin, N et al. (2011). Experimental demonstration of spectral non-reciprocity and unidirectionality in volumetric and printed magnetic photonic crystals . 10.1109/URSIGASS.2011.6050643

cited authors

  • Sertel, K; Zhang, L; Apaydin, N; Volakis, JL

authors

abstract

  • We present experimental confirmation of spectral non-reciprocity and unidirectional propagation in magnetic photonic crystals. The unique dispersion properties of such periodic anisotropic/magnetic media were also emulated on simpler printed structures. We outline two designs that exhibit non-reciprocal dispersion diagrams (i.e. ω(K) ≠ ω(-K)) in volumetric and printed magnetic photonic crystals. Due to spectral non-reciprocity, unidirectional propagation properties were experimentally observed. These designs can also be tuned such that a stationary inflection point is achieved within the first propagation band, where ω′=ω″=ω‴=0 (where ω′=∂ω/∂K). This special mode is referred to as the "frozen mode" (i.e. zero group velocity). Correspondingly, a significantly longer group delay is observed in experiments. These measurements constitute the first experimental demonstration of the unique properties of the subject magnetic photonic crystals. © 2011 IEEE.

publication date

  • November 21, 2011

Digital Object Identifier (DOI)

International Standard Book Number (ISBN) 13