Title :
Design and Modeling of Traveling-Wave Electro-Optic Polymer Modulator for Ultrahigh Speed Applications
Author :
Li, Bing ; Vemagiri, Jeevan ; Dinu, Raluca
Author_Institution :
Lumera Corp., Bothell, WA
fDate :
3/1/2009 12:00:00 AM
Abstract :
We present a complete model and design approach for high speed electro-optic (EO) polymer modulators. A general numerical model for arbitrary travelling-wave EO modulators is built, and the dispersion characteristic of each polymer layer in the device stack is carefully considered and integrated into the model. A velocity compensation layer is added to allow more room for increasing the waveguide core index to optimize half-wave voltage of the device. Microstrip mode analysis is also included to estimate the influence of different polymer stack to the E filed distribution inside the waveguide core. The device has been successfully designed and achieves more than 45 GHz EO bandwidth with a half-wave voltage of 3.2 V. A 100 Gbps EO modulator is under development.
Keywords :
electro-optical modulation; optical dispersion; optical polymers; E filed distribution; bit rate 100 Gbit/s; dispersion characteristic; electro optic polymer modulator; frequency 45 GHz; half wave voltage; microstrip mode analysis; traveling wave; ultrahigh speed applications; velocity compensation layer; voltage 3.2 V; waveguide core index; Bandwidth; Dielectric materials; Electrodes; Electrooptic modulators; Electrooptical waveguides; Frequency; Microstrip; Optical polymers; Optical waveguides; Voltage; Electrooptic (EO) modulation; high-speed electronics; microstrip; optical waveguide components;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2008.2004943
