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IEEE Journal of Lightwave Technology
Volume 18 Number 6, June 2000

Table of Contents for this issue

Complete paper in PDF format

PLZT Film Waveguide Mach-Zehnder Electrooptic Modulator

G. H. Jin, Member, IEEE Y. K. Zou, Senior Member, IEEE, Member, OSA V. Fuflyigin, S. W. Liu, Y. L. Lu, J. Zhao and M. Cronin-Golomb Member, OSA

Page 807.

Abstract:

We report the numerical analysis and the fabrication of a reversed-ridge PLZT film waveguide. It is single-mode, has low transmission loss, and has large transverse cross-section suitable for efficient coupling to single-mode optical fibers. We used this structure to fabricate Mach-Zehnder (MZ) waveguide modulators. The field distribution in the channel and Y branch waveguides was calculated using a beam propagation method to analyze the modal profiles and the propagation loss. The reversed-ridge waveguides and the MZ structures were fabricated on r-sapphire substrates with a patterned ITO spacer film by sol-gel deposition. At 1.55 µm the propagation loss was 2.7 dB/cm. In the MZ, the half-wave modulation voltage was 8.5 V using 1.55µm light and electrode length of 3.5 mm.

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