Abstract
The fabrication of a novel electrooptic modulator with a transverse electrode geometry, formed by parallel electrodes on opposite faces of a thinned lithium niobate substrate straddling a strip waveguide, is reported. The device, referred to as a transverse electrooptic modulator (TEOM), has several advantages over standard electrooptic waveguide modulators using a coplanar electrode geometry. It is shown that it is possible to achieve a 30% reduction in the operating voltage for a given electrode spacing and a substantial reduction in the figure of merit, the power required per unit bandwidth, for electrooptic modulators with either lumped or traveling wave electrode structures. Moreover, a more accurate estimate of the electrooptic coefficients is possible than with modulators using strip waveguides and coplanar electrodes.
Original language | English |
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Pages (from-to) | 163-168 |
Number of pages | 6 |
Journal | Lightwave Technology, Journal of |
Volume | 10 |
Issue number | 2 |
DOIs | |
Publication status | Published - 6 Aug 1992 |
Keywords
- electrooptic modulators
- electrodes
- electrooptical waveguides
- geometry
- strips
- coplanar waveguides
- optical device fabrication
- lithium niobate
- electrooptic devices
- voltage