Title :
Grating assisted waveguide-to-waveguide couplers
Author :
Liang, Tao ; Ziolkowski, Richard W.
Author_Institution :
Electromagnetics Lab., Arizona Univ., Tucson, AZ, USA
fDate :
5/1/1998 12:00:00 AM
Abstract :
A new radiation-type waveguide-to-waveguide coupler is proposed. The coupling is realized through gratings embedded on the dielectric waveguides involved. Compared to the conventional hybrid-mode coupler, this type of coupler has advantages in that the two waveguides can be quite dissimilar as well as being separated by large distances. It is demonstrated that the coupling performance of this radiation-type coupler can be enhanced significantly by using photonic bandgap (PBG) structures.
Keywords :
diffraction gratings; finite difference time-domain analysis; integrated optics; optical communication equipment; optical couplers; optical design techniques; optical waveguide theory; photonic band gap; conventional hybrid-mode coupler; coupling performance; dielectric waveguides; grating assisted waveguide-to-waveguide couplers; integrated optics; large distances; optical communications equipment; photonic bandgap structures; radiation-type coupler; radiation-type waveguide-to-waveguide coupler; Couplers; Dielectrics; Electromagnetic waveguides; Finite difference methods; Gratings; Mirrors; Optical waveguide theory; Optical waveguides; Photonic band gap; Time domain analysis;
Journal_Title :
Photonics Technology Letters, IEEE
