title: Bias-free electro-optic polymer-based two-section Y-branch waveguide modulator with 22 dB linearity enhancement.
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.
authors.affiliation: Microelectronics Research Center, The University of Texas at Austin, 10100 Burnet Road, Austin, Texas 78758, USA. bslee74@gmail.com
authors.forename: Beomsuk
authors.initials: B
authors.lastname: Lee
authors.forename: Cheyun
authors.initials: C
authors.lastname: Lin
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Wang
authors.forename: Ray T
authors.initials: RT
authors.lastname: Chen
authors.forename: Jingdong
authors.initials: J
authors.lastname: Luo
authors.forename: Alex K Y
authors.initials: AK
authors.lastname: Jen