Title :
A linearization concept for integrated-optic modulators
Author :
Djupsjöbacka, Anders
Author_Institution :
Ericsson Telecom AB, Stockholm, Sweden
Abstract :
A novel linearization concept to reduce the distortion products from integrated-optic modulators is proposed and analyzed. The proposed linearization concept could be used on any type of modulator with an odd transfer function. A dual parallel Mach-Zehnder modulator was linearized, and the results are compared to those obtained using a conventional linearization concept. The proposed concept gives a 40% higher modulation index compared to a concept based on reduction of the cubic nonlinearity of the modulator.<>
Keywords :
integrated optics; optical constants; optical modulation; optical transfer function; cubic nonlinearity; distortion products; dual parallel Mach-Zehnder modulator; integrated-optic modulators; linearization concept; modulation index; nonlinear optics; odd transfer function; optical waveguide theory; Electron optics; Indium compounds; Indium gallium arsenide; Integrated optics; Optical fiber cables; Optical materials; Optical modulation; Power dividers; Quantum well devices; Transfer functions;
Journal_Title :
Photonics Technology Letters, IEEE
