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|Title:||Out-of-plane nanomechanical tuning of double-coupled one-dimensional photonic crystal cavities||Authors:||Tian, F.
|Issue Date:||15-Jun-2013||Citation:||Tian, F., Zhou, G., Du, Y., Chau, F.S., Deng, J., Akkipeddi, R. (2013-06-15). Out-of-plane nanomechanical tuning of double-coupled one-dimensional photonic crystal cavities. Optics Letters 38 (12) : 2005-2007. ScholarBank@NUS Repository. https://doi.org/10.1364/OL.38.002005||Abstract:||We demonstrate tuning of double-coupled one-dimensional photonic crystal cavities by their out-of-plane nano-mechanical deformations. The coupled cavities are pulled by the vertical electrostatic force generated by the potential difference between the device layer and the handle layer in a silicon-on-insulator chip, and the induced deformations are analyzed by the finite element method. Applied with a voltage of 12 V, the cavities obtain a redshift of 0.0405 nm (twice the linewidth) for their second-order odd resonance mode and a blueshift of 0.0635 nm (three times the linewidth) for their second-order even resonance mode, which are mainly attributed to out-of-plane relative displacement. Out-of-plane tuning of coupled cavities does not need actuators and corresponding circuits; thus the device is succinct and compact. This working principle can be potentially applied in chip-level optoelectronic devices, such as sensors, switches, routers, and tunable filters. © 2013 Optical Society of America.||Source Title:||Optics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/61042||ISSN:||01469592||DOI:||10.1364/OL.38.002005|
|Appears in Collections:||Staff Publications|
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