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Cross section of (a) the in-plane CPW MZ and (b) the buried CPW MZ. The solid arrow represents the position of the optical mode center and the dotted line is the electric field distribution. is the gap spacing, is the waveguide width, is the trench depth, and is the core thickness.
Overlap integral factors of the polymer MZ modulators in three different electrode structures. The optical waveguide used in this calculation has , , and . is . The core-cladding index contrast is 0.1 and the normalizing optical mode size is .
SEM cross sectional image of the fabricated device using AJL8/APC EO polymer. One of the MZ arms is shown.
Modulated output waveform of the buried CPW MZ using AJL8/APC. The triangular modulating signal is applied to the electrode through a signal amplifier.
Measured and the efficiency product of the fabricated MZ devices.
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