title: Linearized electro-optic modulators based on a two-section Y-fed directional coupler.
abstract: We experimentally demonstrate a linearized Y-fed directional coupler (DC) modulator based on an electro-optic (EO) polymer waveguide. The spurious free dynamic range of 119 dB/Hz2/3, which is 11 dB higher than that of the conventional Mach-Zehnder modulator, is achieved by introducing the reversed Δβ technique in the two-section Y-fed DC. The in-device EO coefficient (r33) of the fabricated device is as high as 79 pm/V in 1.55 μm wavelength, which is 88% of a single film r33 of LPD-80/APC.
authors.affiliation: 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: Che-Yun
authors.initials: CY
authors.lastname: Lin
authors.forename: Alan X
authors.initials: AX
authors.lastname: Wang
authors.forename: Raluca
authors.initials: R
authors.lastname: Dinu
authors.forename: Ray T
authors.initials: RT
authors.lastname: Chen