Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Mode transformation using graded photonic crystals with axial asymmetry

Not Accessible

Your library or personal account may give you access

Abstract

We propose a mode conversion method that enables transformation of the propagating mode from fundamental to higher-order modes by utilizing asymmetric graded index (A-GRIN) structures. Refractive index variations of two different asymmetric gradient profiles, i.e., exponential and Luneburg lens profiles, have been approximated by two-dimensional photonic crystals (PCs). The basic structure is composed of constant radii with different lattice sizes. The designed GRIN mode converters provide relatively high transmission efficiency in the spectral region of interest and achieve the transformation in compact configuration. Numerical approaches utilizing the finite-difference time-domain and plane wave expansion methods are used to analyze the mode conversion phenomenon of proposed GRIN PC media. Analytical formulation based on ray theory is outlined to explore both ray trajectories and the physical concept of a wavefront retardation mechanism.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
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)

Efficient mode converter design using asymmetric graded index photonic structures

B. B. Oner, M. Turduev, I. H. Giden, and H. Kurt
Opt. Lett. 38(2) 220-222 (2013)

Controlling electromagnetic fields with graded photonic crystals in metamaterial regime

Borislav Vasić, Goran Isić, Radoš Gajić, and Kurt Hingerl
Opt. Express 18(19) 20321-20333 (2010)

Supplementary Material (4)

Media 1: MPG (2228 KB)     
Media 2: MPG (2666 KB)     
Media 3: MPG (2126 KB)     
Media 4: MPG (2114 KB)     

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (26)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved