Title :
A new low-loss structure of abrupt bends in dielectric waveguides
Author :
Hirayama, Koichi ; Koshiba, Masanori
Author_Institution :
Dept. of Electron. Eng., Kitami Inst. of Technol., Japan
fDate :
5/1/1992 12:00:00 AM
Abstract :
In the proposed low-loss structure, a region whose refractive index is altered for reducing bending losses becomes much smaller. The beam propagation method is used to evaluate the loss of the modified corner bend proposed here. The validity of the results is confirmed in some cases through a comparison with those of a combination of the finite-element and boundary-element methods. Also, it is shown that the propagation characteristics of the proposed structure can be easily explained by using Snell´s law
Keywords :
bending; boundary-elements methods; finite element analysis; integrated optics; optical losses; optical waveguide theory; Snell´s law; abrupt bends; beam propagation method; bending losses; boundary-element methods; dielectric waveguides; finite element methods; low-loss structure; modified corner bend; optical integrated circuits; refractive index; Dielectrics; Finite element methods; Integrated optics; Optical refraction; Optical scattering; Optical variables control; Optical waveguide theory; Optical waveguides; Refractive index; Waveguide discontinuities;
Journal_Title :
Lightwave Technology, Journal of
