Title :
Distributed effects model for cascaded traveling-wave electroabsorption modulator
Author :
Chiu, Yi-Jen ; Kaman, Volkan ; Zhang, Sheng Z. ; Bowers, John E.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
A distributed model based on the large-signal electrooptic conversion is proposed to analyze cascaded traveling-wave electroabsorption modulators (TWEAMs) for high-speed optical switching applications. The microwave propagation loss, velocity mismatch, as well as frequency chirping are included. The model predicts that a cascaded TWEAM structure has the advantage of a high design tolerance to various distributed effects and an improved extinction ratio and optical loss in comparison to a single device of same total length. The agreement between experimental and calculated results indicates that the cascaded structures can be implemented for efficient TWEAM design.
Keywords :
chirp modulation; electro-optical modulation; electro-optical switches; electroabsorption; high-speed optical techniques; integrated optics; optical communication equipment; optical design techniques; optical losses; optical waveguides; time division multiplexing; cascaded structures; cascaded traveling-wave electroabsorption modulator; distributed effects model; frequency chirping; high design tolerance; high-speed optical switching applications; large-signal electrooptic conversion; microwave propagation loss; optical loss; velocity mismatch; Chirp modulation; Electrooptic modulators; Extinction ratio; Frequency; High speed optical techniques; Microwave devices; Optical design; Optical modulation; Predictive models; Propagation losses;
Journal_Title :
Photonics Technology Letters, IEEE
