Title :
Optical confinement factor in waveguide electroabsorption modulators: design and measurement
Author_Institution :
California Univ., San Diego, La Jolla, CA, USA
Abstract :
In this paper, we show that optical confinement factor (/spl gamma/) can be a powerful design tool for optimizing the total performance of waveguide electroabsorption modulator, provided the material design is also optimized. In particular, a small-/spl gamma/, large-core waveguide design not only reduces the fiber-to-fiber insertion loss, but also improves the robustness of the waveguide mode, as shown by the experimental measurement of /spl gamma/ as a function of applied voltage for two types of waveguides.<>
Keywords :
electro-optical devices; electroabsorption; optical design techniques; optical losses; optical modulation; optical waveguide theory; optical waveguides; applied voltage; design tool; fiber-to-fiber insertion loss; large-core waveguide design; material design; measurement; optical confinement factor; total performance; waveguide electroabsorption modulators; waveguide mode; Design optimization; Insertion loss; Loss measurement; Optical design; Optical fiber losses; Optical materials; Optical modulation; Optical waveguide components; Optical waveguides; Robustness;
Journal_Title :
Photonics Technology Letters, IEEE
