Special Section on Plasmonic Systems and Applications

Plasmonic hydrogen sensor based on integrated microring resonator

[+] Author Affiliations
Ya Sha Yi

University of Michigan, Integrated Nano-Optoelectronics Laboratory, Department of Electrical and Computer Engineering, Dearborn, Michigan, United States

University of Michigan, Energy Institute, Ann Arbor, Michigan, United States

Da Chuan Wu

University of Michigan, Integrated Nano-Optoelectronics Laboratory, Department of Electrical and Computer Engineering, Dearborn, Michigan, United States

Opt. Eng. 56(12), 121904 (Mar 23, 2017). doi:10.1117/1.OE.56.12.121904
History: Received December 1, 2016; Accepted March 10, 2017
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Abstract.  We have proposed and demonstrated numerically an ultrasmall and highly sensitive plasmonic hydrogen sensor based on an integrated microring resonator, with a footprint size as small as 4×4  μm2. With a palladium (Pd) or platinum (Pt) hydrogen-sensitive layer coated on the inner surface of the microring resonator and the excitation of surface plasmon modes at the interface from the microring resonator waveguide, the device is highly sensitive to low hydrogen concentration variation, and the sensitivity is at least one order of magnitude larger than that of the optical fiber-based hydrogen sensor. We have also investigated the tradeoff between the portion coverage of the Pd/Pt layer and the sensitivity, as well as the width of the hydrogen-sensitive layer. This ultrasmall plasmonic hydrogen sensor holds promise for the realization of a highly compact sensor with integration capability for applications in hydrogen fuel economy.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Ya Sha Yi and Da Chuan Wu
"Plasmonic hydrogen sensor based on integrated microring resonator", Opt. Eng. 56(12), 121904 (Mar 23, 2017). ; http://dx.doi.org/10.1117/1.OE.56.12.121904


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