"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Tailoring slow light properties by shifting the innermost rows of holes in photonic crystal waveguides with ring-shaped holes

F. BAGCI1, B. AKAOGLU1,*

Affiliation

  1. Department of Engineering Physics, Faculty of Engineering, Ankara University, 06100 Besevler, Ankara, Turkey

Abstract

A silicon ring-shaped photonic crystal waveguide embedded in silica is proposed and the effects of shifting the first and the second innermost rows towards the line-defect on slow light properties are systematically investigated by plane-wave expansion method. The first and second rows affect the slow light characteristics differently, which offers a strategy to design flatter bands. The behavior of slow light generation in ring-shaped photonic crystal waveguides against row shifting is clarified and a structural strategy for obtaining higher group index and less group velocity dispersion is put forward. Slow wave propagation is also verified by finite-difference time-domain calculations..

Keywords

Photonic crystal waveguide, Slow light, Group index, Plane-wave expansion method, Finite-difference time-domain method.

Citation

F. BAGCI, B. AKAOGLU, Tailoring slow light properties by shifting the innermost rows of holes in photonic crystal waveguides with ring-shaped holes, Optoelectronics and Advanced Materials - Rapid Communications, 8, 5-6, May-June 2014, pp.353-358 (2014).

Submitted at: May 21, 2013

Accepted at: May 15, 2014