Power-independent wavelength determination by hot carrier collection in metal-insulator-metal devices

Fuming Wang and Nicholas A. Melosh ()
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Fuming Wang: Stanford University, 496 Lomita Mall, Stanford, California 94305, USA
Nicholas A. Melosh: Stanford University, 496 Lomita Mall, Stanford, California 94305, USA

Nature Communications, 2013, vol. 4, issue 1, 1-7

Abstract: Abstract Wavelength separation and detection is generally performed by spatial dispersal of incident light onto separate detectors, or by appropriate wavelength-selective filters. Here we demonstrate direct wavelength determination of monochromatic light in a power-independent fashion with a single metal-insulator-metal device. This simple platform allows facile fabrication and scaling, and may be useful for on-chip optical communications. Although a single wavelength is power-independent, with two or more concurrent input signals, the output obeys a simple current sum rule, allowing the output to be tuned by choosing the input wavelengths and power. Finally, we demonstrate real-time deconvolution of three different wavelength asynchronous signals.

Date: 2013
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DOI: 10.1038/ncomms2728

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