Title :
Losses of tapered dielectric slab waveguides with axial variations in index of refraction
Author :
Scarmozzino, Robert ; Podlesnik, Dragan V. ; Osgood, Richard M., Jr.
Author_Institution :
Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA
fDate :
2/1/1990 12:00:00 AM
Abstract :
The effects of varying the index of refraction in the cladding along the length of a tapered dielectric waveguide are calculated using a local normal mode analysis. Variations in the length and shape of the taper are considered. The numerical results show that in some cases the losses can be reduced by an order of magnitude, even for short tapers whose length is of the order of the guide dimensions. The technique has several other potential applications, including waveguide bends, branches, and couplers
Keywords :
dielectric waveguides; optical losses; optical waveguide theory; refractive index; axial variations; branches; cladding; couplers; local normal mode analysis; losses; optical waveguides; refractive index variations; tapered dielectric slab waveguides; waveguide bends; Couplers; Dielectric losses; Etching; Gallium arsenide; Helium; Microelectronics; Shape; Slabs; Waveguide components; Waveguide lasers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Conference_Location :
2/1/1990 12:00:00 AM
