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Quasistatic analysis of coupled coplanar waveguide traveling-wave electrodes for electro-optic modulators

✍ Scribed by Ic-Pyo Hong; Seong-Kyoon Park; Han-Kyu Park

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 117 KB
Volume: 20
Category: Article
ISSN: 0895-2477
DOI: 10.1002/(sici)1098-2760(19990220)20:4<284::aid-mop19>3.0.co;2-f

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✦ Synopsis

In this letter, an LiNbO optical modulator using a 3 ( ) coupled coplanar wa¨eguide CPW with an SiO buffer layer is ana-2 lyzed accurately by incorporating the tra¨eling-wa¨e electrode thickness effect. The effect of coupled ground planes, electrode, and buffer layer thickness on the effecti¨e dielectric constant and characteristic impedance of coupled CPW electrode is discussed. Numerical computations show that increasing the width of the coupled ground planes can slightly impro¨e the phase ¨elocity mismatch between electric and optical wa¨es.

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