Design and characterization for travelling wave electrodes of high‐speed Mach‐Zehnder electro‐optic modulator on an n‐doped InP substrate

Designing a traveling wave electrode (TWE), which feeds a high‐speed electrical signal to modulate an optical signal, is a key issue of high‐speed Mach‐Zehnder electro‐optic modulator (MZM) development fields. In this article, we have presented TWE design and characterization results for an MZM on a...

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Bibliographic Details
Published in:Microwave and optical technology letters 2018-06, Vol.60 (6), p.1558-1562
Main Authors: Kim, Sungil, Lee, Chul‐Uk, Song, Minhyup, Hwan Kwak, Min
Format: Article
Language:English
Subjects:
Circuit design
Coplanar waveguides
Electric components
Electrodes
Equivalent circuits
Immunity
impedance matching
Mach‐Zehnder electro‐optic modulator (MZM)
n‐InP substrate
Optical communication
radiofrequency
Substrates
traveling wave electrode
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Summary:Designing a traveling wave electrode (TWE), which feeds a high‐speed electrical signal to modulate an optical signal, is a key issue of high‐speed Mach‐Zehnder electro‐optic modulator (MZM) development fields. In this article, we have presented TWE design and characterization results for an MZM on an n‐type InP substrate operating frequency range from DC to 25 GHz. A coplanar waveguide with ground structure has been adapted to the TWE to overcome lossy characteristics of the n‐type InP substrate and increase noise immunity. The designed results are analyzed as comparing with equivalent circuits extracted by the data, which is measured by a vector network analyzer. Consequently, we hope our results can be helpful in the fields of design and fabrication of high‐speed opto‐electric components.
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.31203