Bias-free electro-optic polymer-based two-section Y-branch waveguide modulator with 22 dB linearity enhancement
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Published on: March 19, 2016
Beomsuk Lee1, Cheyun Lin, Xiaolong Wang
1Microelectronics Research Center, The University of Texas at Austin, 10100 Burnet Road, Austin, Texas 78758, USA. bslee74@gmail.com
Abstract:
A bias-free two-section Y-branch directional coupler modulator with high linearity based on domain-inverted modulation is fabricated and tested. 25 wt.% AJLS102/APC is used as an active core layer with an experimentally confirmed device r(33) value of 56 pm/V at 1.59 microm. The fabricated device shows an extinction voltage of 4 V. A two-tone test is performed to demonstrate 64 dB distortion suppression at 25% modulation depth, which is 22 dB higher than a conventional Mach-Zehnder modulator.
