Open AccessThin-ridge Silicon-on-Insulator waveguides with directional control of lateral leakage radiation
Author(s) -
Naser Dalvand,
Thach G. Nguyen,
Ravi S. Tummidi,
Thomas Koch,
Arnan Mitchell
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.005635
Subject(s) - optics , radiation , materials science , silicon , leakage (economics) , insulator (electricity) , silicon on insulator , ridge , radiation pattern , power dividers and directional couplers , optoelectronics , physics , telecommunications , computer science , antenna (radio) , paleontology , biology , economics , macroeconomics
In this paper, we propose a Silicon-On-Insulator waveguide structure which when excited with TM guided light emits controlled TE polarized radiation from one side of the structure only. The validity of the proposed structure is analyzed using eigenmode expansion and supermode techniques. It is shown that care must be taken to select the gap between the radiating elements such that both the phase and the amplitude of the radiating modes are maintained along the propagation direction to achieve the desired directional control of radiation. Steps toward practical demonstration of the proposed structure are identified.