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Materials 2014, 7(8), 5591-5602; https://doi.org/10.3390/ma7085591

Nanomechanical Optical Fiber with Embedded Electrodes Actuated by Joule Heating

Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK
These authors contributed equally to this work.
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Received: 13 June 2014 / Revised: 18 July 2014 / Accepted: 24 July 2014 / Published: 31 July 2014
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Abstract

Nanomechanical optical fibers with metal electrodes embedded in the jacket were fabricated by a multi-material co-draw technique. At the center of the fibers, two glass cores suspended by thin membranes and surrounded by air form a directional coupler that is highly temperature-dependent. We demonstrate optical switching between the two fiber cores by Joule heating of the electrodes with as little as 0.4 W electrical power, thereby demonstrating an electrically actuated all-fiber microelectromechanical system (MEMS). Simulations show that the main mechanism for optical switching is the transverse thermal expansion of the fiber structure. View Full-Text
Keywords: micro-structured optical fibers; optical fiber sensors; all-optical fiber devices; optical switching micro-structured optical fibers; optical fiber sensors; all-optical fiber devices; optical switching
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Lian, Z.; Segura, M.; Podoliak, N.; Feng, X.; White, N.; Horak, P. Nanomechanical Optical Fiber with Embedded Electrodes Actuated by Joule Heating. Materials 2014, 7, 5591-5602.

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