Title :
Guiding and Confining Light in Low-Index Circularly Symmetric Waveguides
Author :
Wenfu Zhang ; Jian-Wei Mu ; Wei-Ping Huang ; Wei Zhao
Author_Institution :
State Key Lab. of Transient Opt. & Photonics, Chinese Acad. of Sci., Xi´an, China
Abstract :
A circularly symmetric waveguide with a low-index ring inside the core has been proposed and studied comprehensively. By taking advantage of the azimuthal TM01 mode, the structure can confine light inside the low-index region with very high power confinement efficiency. Key characteristic parameters as functions of geometry factors have been investigated through rigorous finite-difference methods. The fabrication tolerance and the material candidate for various potential applications have been discussed.
Keywords :
circular waveguides; finite difference methods; geometrical optics; nanowires; optical waveguides; azimuthal TM01 mode; characteristic parameters; circularly symmetric waveguides; fabrication tolerance; finite difference methods; geometry factors; light confinement; light guidance; low index ring; very high power confinement efficiency; Indexes; Optical device fabrication; Optical sensors; Optical waveguides; Silicon; Waveguides; nanowires; subwavelength structures;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2011.2167602
