Title :
Analysis of periodically segmented waveguide mode expanders
Author :
Weissman, Z. ; Hendel, I.
Author_Institution :
Fac. of Eng., Tel Aviv Univ., Israel
fDate :
10/1/1995 12:00:00 AM
Abstract :
Periodically segmented waveguide (PSW) mode expanders can be realized simply, using a single step lithography. In this paper such devices are studied numerically, with respect to high-Δ silica waveguides and InP strip waveguides. The efficiency of such expanders is shown to be high, for proper length and segmentation period, and back reflection is negligible. It is shown that lithographical grids of 0.125-0.25 μm resolution are sufficient to obtain efficient out-coupling. Basic design rules are outlined
Keywords :
integrated optics; optical couplers; optical design techniques; optical waveguide theory; photolithography; refractive index; 0.125 to 0.25 mum; InP; InP strip waveguides; back reflection; basic design rules; efficient out-coupling; high-Δ silica waveguides; lithographical grids; periodically segmented waveguide mode expander analysis; proper length; segmentation period; single step lithography; Electrooptical waveguides; Fabrication; Indium phosphide; Integrated optics; Lithography; Optical coupling; Optical reflection; Optical waveguides; Silicon compounds; Strips;
Journal_Title :
Lightwave Technology, Journal of
