4.6 Article

Wide optical spectrum range, subvolt, compact modulator based on an electro-optic polymer refilled silicon slot photonic crystal waveguide

Journal

OPTICS LETTERS
Volume 38, Issue 22, Pages 4931-4934

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.38.004931

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Funding

  1. Air Force Research Laboratory (AFRL) [FA8650-12-M-5131]

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We design and demonstrate a compact and low-power, band-engineered, electro-optic (EO) polymer refilled silicon slot photonic crystal waveguide (PCW) modulator. The EO polymer is engineered for large EO activity and near-infrared transparency. A PCW step coupler is used for optimum coupling to the slow-light mode of the band-engineered PCW. The half-wave switching voltage is measured to be V-pi = 0.97 +/- 0.02 V over an optical spectrum range of 8 nm, corresponding to the effective in-device r(33) of 1190 pm/V and V-pi x L = 0.291 +/- 0.006 V x mm in a push-pull configuration. Excluding the slow-light effect, we estimate that the EO polymer is poled with an efficiency of 89 pm/V in the slot. (C) 2013 Optical Society of America

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