Segmented transmission-line electroabsorption modulators

Author

Lewén, Robert ; Irmscher, Stefan ; Westergren, Urban ; Thylén, Lars ; Eriksson, Urban

Author_Institution

Lab. of Opt., R. Inst. of Technol., Kista, Sweden

Volume

22

Issue

1

fYear

2004

Firstpage

172

Lastpage

179

Abstract

We present segmented transmission-line (TML) electroabsorption modulators (EAMs) with characteristic impedance close to 50 Ω. The segmented TML approach allows us to design a traveling-wave EAM with 50 Ω impedance and very high bandwidth. The devices show low return loss (<-15 dB) and excellent frequency response up to 50 GHz, and exhibit a maximum model-extrapolated 3 dBe bandwidth (BW) of 90 GHz. An effective modeling tool based on Bloch-wave analysis is derived. Design considerations and TML properties for periodic TML-EAMs are discussed.

Keywords

electric impedance; electro-optical modulation; electroabsorption; optical communication equipment; 50 Ωimpedance; 50 GHz; 50 ohm; 90 GHz; Bloch-wave analysis; frequency response; return loss; segmented TML; segmented transmission-line electroabsorption modulators; traveling-wave EAM; Bandwidth; Frequency; High speed optical techniques; Impedance; Nonlinear optics; Optical losses; Optical modulation; Optical scattering; Optical waveguides; Transmission lines;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2003.822829

Filename

1266691