title: Phase error corrected 4-bit true time delay module using a cascaded 2 x 2 polymer waveguide switch array.
abstract: A fully integrated 4-bit true time delay device using polymer optical switches and waveguide delay lines is demonstrated. The fabricated device, which contains five 2x2 thermo-optic switches, has a maximum power consumption of 143 mW and a switching time less than 3 ms. The rf phase error, which is affected by the optical switch cross talk, is also theoretically analyzed and proved to be negligible by experimental results.
authors.affiliation: University of Texas at Austin, TX 78758, USA.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Wang
authors.forename: Brie
authors.initials: B
authors.lastname: Howley
authors.forename: Maggie Y
authors.initials: MY
authors.lastname: Chen
authors.forename: Ray T
authors.initials: RT
authors.lastname: Chen