A theoretical analysis and comparison of the integration density are given for passive planar lightwave circuits based on three different kinds of nanophotonic waveguide, namely, photonic crystal waveguides, Si nanowire waveguides, and nanoslot waveguides. Two criteria for determining the integration density are used. One is the minimal decoupled separation between two parallel nanophotonic waveguides, and the other is the area occupied by a low-loss 90° turn. Some important functional components (such as Y branches and optical add–drop filters) are also chosen as basic elements to evaluate the integration density. It is shown that the integration densities of passive linear planar lightwave circuits based on these three kinds of nanophotonic waveguide are comparable.
© 2007 Optical Society of America
Original Manuscript: July 10, 2006
Revised Manuscript: November 21, 2006
Manuscript Accepted: November 30, 2006
Published: February 12, 2007
Daoxin Dai, Yaocheng Shi, and Sailing He, "Comparative study of the integration density for passive linear planar light-wave circuits based on three different kinds of nanophotonic waveguide," Appl. Opt. 46, 1126-1131 (2007)