Free space millimeter wave-coupled electro-optic high speed nonlinear polymer phase modulator with in-plane slotted patch antennas
Published/Posted: June 3, 2015
Authors: Park; D. H., Pagán, V. R.; Murphy, T. E.; Luo, J.; Jen, A. K. Y.; Herman, W. N.
DOI: 10.1364/OE.23.009464Abstract: We report in-plane slotted patch antenna-coupled electro-optic phase modulators with a carrier-to-sideband ratio (CSR) of 22 dB under an RF power density of 120 W/m2 and a figure of merit of 2.0 W-1/2 at the millimeter wave frequencies of 36-37 GHz based on guest-host type of second-order nonlinear polymer SEO125. CSR was improved more than 20 dB by using a SiO2 protection layer. We demonstrate detection of 3 GHz modulation of the RF carrier. We also derive closed-form expressions for the modulated phase of optical wave and carrier-to-sideband ratio. Design, simulation, fabrication, and experimental results are discussed.
D. H. Park, V. R. Pagán, T. E. Murphy, J. Luo, A. K. Y. Jen and W. N. Herman, "Free space millimeter wave-coupled electro-optic high speed nonlinear polymer phase modulator with in-plane slotted patch antennas", Opt. Express 23(7) 9464-9476 (2015)
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