Study of Linearization of Optical Polymer Modulators
Abstract
To improve the Spur Free Dynamic Range of analog electro-optic modulators in the >10 GHz regime, techniques for improving the linearity of these devices must be developed. This report discusses an investigation into electro-optic directional couplers that use variable coupling in polymer-based waveguide structures. The approach begins with determining the desired response function, in this case a trapezoid. The Fourier transform method is then applied to synthesize the variable coupling function which results in the desired output response. This initial coupling function is iteratively modified using Newton's method to obtain a coupling design that can be implemented in a polymer waveguide. Approaches to achieving the variable coupling, including regions of negative coupling, are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2004
- Accession Number
- ADA421650
Entities
People
- Anand Gopinath
- Desalegn Bereka
- Jaesang Oh
- Ross T. Schermer
Organizations
- University of Minnesota