Title :
Scattering loss of antiresonant reflecting optical waveguides
Author :
Baba, Toshihiko ; Kokubun, Yasuo
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
fDate :
5/1/1991 12:00:00 AM
Abstract :
The scattering loss of two-dimensional antiresonant reflecting optical waveguides (ARROW) and of ARROW-B, which has a similar structure to ARROW and less polarization dependence, are analyzed by the first-order perturbation theory. Calculated results are compared with those of conventional three layer waveguides. Optimum design for the reduction of scattering loss of these ARROW-type waveguides is discussed. It was found that the scattering loss of ARROW-type waveguides is no larger than that of a conventional waveguide having a relative refractive-index difference, Δ of 2.5%, despite each interface of ARROW-type waveguides having a large Δ, normally larger than 20%. The optimum design for the reduction of essential radiation loss of ARROW is also optimum for the reduction of scattering loss
Keywords :
light scattering; optical losses; optical waveguides; first-order perturbation theory; optimum design; polarization dependence; relative refractive-index difference; scattering loss; two-dimensional antiresonant reflecting optical waveguides; Light scattering; Optical devices; Optical losses; Optical refraction; Optical scattering; Optical variables control; Optical waveguide theory; Optical waveguides; Particle scattering; Semiconductor waveguides;
Journal_Title :
Lightwave Technology, Journal of
