Abstract

A bias-free two-section Y-branch directional coupler modulator with high linearity based on domain-inverted modulation is fabricated and tested. 25wt.% AJLS102/APC is used as an active core layer with an experimentally confirmed device r33 value of 56pmV at 1.59μm. The fabricated device shows an extinction voltage of 4V. A two-tone test is performed to demonstrate 64dB distortion suppression at 25% modulation depth, which is 22dB higher than a conventional Mach–Zehnder modulator.

© 2009 Optical Society of America

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