Abstract

Asymmetric graded-index (GRIN) inhomogeneous medium is proposed to enable even-to-odd mode conversion. An exponential refractive index profile is implemented to induce an asymmetric refractive index distribution. A two-dimensional photonic crystal structure composed of constant dielectric radii with rectangular unit cells is deployed. Efficient mode transformation in a compact structure may promote the manipulation of light for the creation of other types of higher-order modes in asymmetric GRIN structures.

© 2013 Optical Society of America

Mode transformation using graded photonic crystals with axial asymmetry

M. Turduev, B. B. Oner, I. H. Giden, and H. Kurt
J. Opt. Soc. Am. B 30(6) 1569-1579 (2013)

High-efficiency beam bending using graded photonic crystals

B. B. Oner, M. Turduev, and H. Kurt
Opt. Lett. 38(10) 1688-1690 (2013)

Method of implementing graded index media by symmetry-reduced helical photonic structures

I. H. Giden, B. Rezaei, and H. Kurt
J. Opt. Soc. Am. B 32(10) 2153-2157 (2015)

Efficient mode-order conversion using a photonic crystal structure with low symmetry

Nur Erim, I. Halil Giden, Mirbek Turduev, and Hamza Kurt
J. Opt. Soc. Am. B 30(11) 3086-3094 (2013)

Modified Maxwell fish-eye approach for efficient coupler design by graded photonic crystals

H. Kurt, B. B. Oner, M. Turduev, and I. H. Giden
Opt. Express 20(20) 22018-22033 (2012)