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arXiv · 2208.01186

Silicon-organic hybrid thermo-optic switch based on a slot waveguide directional coupler

Li-Yuan Chiang·Chun-Ta Wang·Steve Pappert·Paul K. L. Yu
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Abstract

We propose and demonstrate a passively biased 2 by 2 thermo-optic switch with high power efficiency and fast response time. The device benefits from the highly concentrated optical field of a slot waveguide mode and the strong thermo-optic effect of a nematic liquid crystal (NLC) cladding. The NLC fills the nano-slot region and is aligned by the subwavelength grating inside. The measured power consumption and thermal time constant are 0.58 mW and 11.8 microsecond, respectively, corresponding to a figure-of-merit of 6.8. The proposed silicon-organic hybrid device provides a new solution to design thermo-optic actuators having lower power consumption and fast operation speed.

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Li-Yuan Chiang, Chun-Ta Wang, Steve Pappert, Paul K. L. Yu. 2022-08-02. Silicon-organic hybrid thermo-optic switch based on a slot waveguide directional coupler. https://doi.org/10.1364/ol.467858

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