Title :
Spot-size conversion of guided optical wave with Gaussian approximation
Author :
Hashimoto, Toshikazu ; Saida, Takashi ; Kasahara, Ryoichi ; Ogawa, Ikuo
Author_Institution :
Photonics Labs., Nippon Telegraph & Telephone Corp., Kanagawa, Japan
Abstract :
We propose an approach to optical wave field spot-size conversion that uses a waveguide structure. An optical wave field is decomposed with a Hermite-Gaussian basis, and we describe its motion with partial differential equations for the field radius and center parameters derived from the propagation of the lower order components. We use the equations to design a spot-size conversion waveguide structure for expanding and reducing a field spot as an example in a quasi-single-mode optical waveguide.
Keywords :
integrated optics; optical design techniques; optical waveguide theory; partial differential equations; Gaussian approximation; Hermite-Gaussian basis; center parameters; coupling efficiency; field radius; field spot; guided optical wave; lower order components propagation; optical integration; optical wave field spot-size conversion; partial differential equations; quasi-single-mode optical waveguide; spot-size conversion; spot-size conversion waveguide structure design equations; waveguide structure; Circuits; Gaussian approximation; Integrated optics; Lenses; Optical planar waveguides; Optical propagation; Optical scattering; Optical waveguides; Planar waveguides; Programmable control;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.818172
