Title :
Mode Conversion/Splitting in Multimode Waveguides Based on Invariant Engineering
Author :
Kai-Hsun Chien ; Chi-Shung Yeih ; Shuo-Yen Tseng
Author_Institution :
Dept. of Photonics, Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
We discuss mode conversion and splitting in multimode waveguides based on Lewis-Riesenfeld invariant theory. The design of mode converters/splitters using the dynamical invariant is discussed. Closed form expressions for the modal power at the output for converter/splitter design are derived. Various design approaches are discussed and assessed by beam propagation simulations. We show that the invariant-based engineering scheme reduces device length as compared to the common adiabatic scheme.
Keywords :
light propagation; optical waveguides; Lewis-Riesenfeld invariant theory; beam propagation simulation; dynamical invariant engineering; mode conversion; mode converter-splitter design; mode splitting; multimode waveguides; Boundary conditions; Couplings; Equations; Gratings; Optical coupling; Optical pulses; Optical waveguides; Coupled mode analysis; gratings; multimode waveguide; optical beam splitting; optical planar waveguides;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2013.2283032
