Asymmetric light propagation in chirped photonic crystal waveguides

Date
2012
Advisor
Instructor
Source Title
Optics Express
Print ISSN
10944087
Electronic ISSN
Publisher
Optical Society of American (OSA)
Volume
20
Issue
18
Pages
20635 - 20646
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We report numerical and experimental investigations of asymmetric light propagation in a newly designed photonic structure that is formed by creating a chirped photonic crystal (PC) waveguide. The use of a non-symmetric distribution of unit cells of PC ensures the obtaining of asymmetric light propagation. Properly designing the spatial modulation of a PC waveguide inherently modifies the band structure. That in turn induces asymmetry for the light's followed path. The investigation of the transmission characteristics of this structure reveals optical diode like transmission behavior. The amount of power collected at the output of the waveguide centerline is different for the forward and backward propagation directions in the designed configuration. The advantageous properties of the proposed approach are the linear optic concept, compact configuration and compatibility with the integrated photonics. These features are expected to hold great potential for implementing practical optical rectifier-type devices. © 2012 Optical Society of America.

Course
Other identifiers
Book Title
Keywords
Laser optics, Light propagation, Photonics, Waveguides, Backward propagation, Centerlines, Chirped photonic crystals, Experimental investigations, Integrated photonics, Linear optics, Optical diodes, PC waveguides, Photonic structure, Spatial modulations, Transmission behavior, Transmission characteristics, Unit cells, Light transmission, article, computer aided design, computer simulation, equipment design, equipment failure analysis, instrumentation, light, radiation scattering, surface plasmon resonance, theoretical model, Computer Simulation, Computer-Aided Design, Equipment Design, Equipment Failure Analysis, Light, Models, Theoretical, Scattering, Radiation, Surface Plasmon Resonance
Citation
Published Version (Please cite this version)