Title :
Adiabatic Mode Conversion in Multimode Waveguides Using Computer-Generated Planar Holograms
Author :
Tseng, Shuo-Yen ; Wu, Ming-Chan
Author_Institution :
Dept. of Electro-Opt. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
We propose a mode converter based on adiabatic evolution of the system eigenmode. Mode conversion is mediated by an intermediate mode that is hardly excited. The coupling properties are analyzed using the coupled-mode theory. Computer-generated planar holograms on multimode waveguides are designed to implement the required coupling coefficients between the guided modes. Beam propagation simulations are used to verify the theoretical analysis.
Keywords :
computer-generated holography; coupled mode analysis; optical waveguides; adiabatic mode conversion; beam propagation simulation; computer-generated planar holograms; coupled-mode theory; coupling coefficients; intermediate mode; multimode waveguides; Coupled mode analysis; gratings; multimode waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2052098
