PT-symmetry and kagome lattices
(Conference Presentation)

Avadh Saxena; Gia-Wei Chern

doi:10.1117/12.2237920

9 November 2016 PT-symmetry and kagome lattices (Conference Presentation)

Avadh Saxena, Gia-Wei Chern

Proceedings Volume 9920, Active Photonic Materials VIII; 99201N (2016) https://doi.org/10.1117/12.2237920
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

We consider a complex photonic lattice by placing PT-symmetric dimers at the Kagome lattice points. This lattice is a two-dimensional network of corner-sharing triangles. Each dimer represents a pair of strongly coupled waveguides. The frustrated coupling between waveguide modes results in a dispersionless flat band comprising spatially localized modes. For a balanced arrangement of gain and loss on each dimer, up to a critical value of the gain/loss parameter the system exhibits a PT-symmetric phase. The beam evolution in the waveguide array leads to an oscillatory rotation of the optical power. We observe local chiral structures with a narrow beam excitation. We also study nonlinearity and disorder in this set up.

Conference Presentation

Citation Download Citation

Avadh Saxena and Gia-Wei Chern "PT-symmetry and kagome lattices (Conference Presentation)", Proc. SPIE 9920, Active Photonic Materials VIII, 99201N (9 November 2016); https://doi.org/10.1117/12.2237920

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