Photonic crystal superlattices in electro-optic slab waveguides

Curtis W. Neff; Christopher J. Summers

doi:10.1117/12.561470

14 October 2004 Photonic crystal superlattices in electro-optic slab waveguides

Proceedings Volume 5511, Tuning the Optical Response of Photonic Bandgap Structures; (2004) https://doi.org/10.1117/12.561470
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

A tunable two-dimensional photonic crystal (2D-PC) design is proposed in which the background medium is composed of an electro-optic material such as lead lanthanum zirconate titanate. The lattice structure is based upon the 2D triangular lattice of holes in a dielectric background; however, holes of two different radii are used and arranged in such a way to create a superlattice structure. The optical properties of this structure are modified by applying an electrical bias so that the dielectric constant is changed from 6.2 to 6.75. Numerical calculations show the band structure of the superlattice is highly modified in comparison to the triangular lattice. In particular, the first full photonic band gap decreases in width and band splitting occurs at high symmetry points of the lattice. From the analysis of the equifrequency contours resulting from the dispersion surface, the angle of refraction of an incident beam was calculated. By changing the biasing conditions on the structure, the refracted beam can be tuned >55° at an incident angle of 14°. This represents an increase of functionality over the regular triangular lattice which is tunable over 5-10° for a 1.36 change in dielectric constant.

Citation Download Citation

Curtis W. Neff and Christopher J. Summers "Photonic crystal superlattices in electro-optic slab waveguides", Proc. SPIE 5511, Tuning the Optical Response of Photonic Bandgap Structures, (14 October 2004); https://doi.org/10.1117/12.561470

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available