DocumentCode :
1124545
Title :
InP-Based Mach–Zehnder Modulator With Capacitively Loaded Traveling-Wave Electrodes
Author :
Akiyama, Suguru ; Itoh, Hiroaki ; Sekiguchi, Shigeaki ; Hirose, Shinichi ; Takeuchi, Tatsuya ; Kuramata, Akito ; Yamamoto, Tsuyoshi
Author_Institution :
Fujitsu Labs. Ltd., Atsugi
Volume :
26
Issue :
5
fYear :
2008
fDate :
3/1/2008 12:00:00 AM
Firstpage :
608
Lastpage :
615
Abstract :
InP-based Mach-Zehnder modulators with capacitively loaded traveling-wave electrodes (CL-TWEs), which have segmented structures along the optical waveguides, are presented. Devices with various structural parameters for gap length (the length between adjacent segmented phase modulators) and total active length were fabricated and investigated both optically and electrically. Excellent characteristics such as characteristic impedance matching to 50 Omega and low electrical propagation losses were obtained. Using the optimum structures, 40- and 10-Gb/s large signal operations were successfully performed with peak-to-peak driving voltages of 3.0 and 1.2 V, respectively. The effects of structural parameters, such as gap length and total active length on electrical and optical modulation properties, are discussed.
Keywords :
III-V semiconductors; Mach-Zehnder interferometers; electro-optical modulation; electrodes; indium compounds; optical fibre communication; InP; Mach-Zehnder modulator; bit rate 10 Gbit/s; bit rate 40 Gbit/s; capacitively loaded traveling-wave electrodes; characteristic impedance matching; electrical modulation properties; electrical propagation losses; electro-optic modulation; gap length; optical fiber communication; optical modulation properties; optical waveguides; segmented phase modulators; structural parameters; total active length; voltage 1.2 V; voltage 3 V; Capacitance; Electrodes; High speed optical techniques; Impedance matching; Optical modulation; Optical transmitters; Optical waveguides; Phase modulation; Structural engineering; Voltage; Electrooptic modulation; Mach–Zehnder (MZ); optical fiber communication; traveling wave;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/JLT.2007.915278
Filename :
4484086
Link To Document :
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