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Double-Slot Hybrid Plasmonic Ring Resonator Used for Optical Sensors and Modulators
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Fotonik och mikrovågsteknik, FMI. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP. (Laboratory of Photonics and Microwave Engineering)ORCID iD: 0000-0003-3618-6049
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP. Zhejiang-KTH Joint Research Center of Photonics, JORCEP .
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Fotonik och mikrovågsteknik, FMI. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP. Hewlett-Packard Laboratories, Palo Alto, CA 94304, USA. (Laboratory of Photonics and Microwave Engineering)
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Fotonik och mikrovågsteknik, FMI. KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP. JORCEP, Joint Research Center of Photonics of the Royal Institute of Technology (Sweden) and Zhejiang University (China), Hangzhou, 310058, China. (Laboratory of Photonics and Microwave Engineering)ORCID iD: 0000-0001-5967-2651
2015 (English)In: Photonics, ISSN EISSN 2304-6732, Vol. 2, no 4, 1116-1130 p.Article in journal (Refereed) Published
Abstract [en]

An ultra-high sensitivity double-slot hybrid plasmonic (DSHP) ring resonator, used for optical sensors and modulators, is developed. Due to high index contrast, as well as plasmonic enhancement, a considerable part of the optical energy is concentrated in the narrow slots between Si and plasmonic materials (silver is used in this paper), which leads to high sensitivity to the infiltrating materials. By partial opening of the outer plasmonic circular sheet of the DSHP ring, a conventional side-coupled silicon on insulator (SOI) bus waveguide can be used. Experimental results demonstrate ultra-high sensitivity (687.5 nm/RIU) of the developed DSHP ring resonator, which is about five-times higher than for the conventional Si ring with the same geometry. Further discussions show that a very low detection limit (5.37 × 10−6 RIU) can be achieved after loaded Q factor modifications. In addition, the plasmonic metal structures offer also the way to process optical and electronic signals along the same hybrid plasmonic circuits with small capacitance (~0.275 fF) and large electric field, which leads to possible applications in compact high-efficiency electro-optic modulators, where no extra electrodes for electronic signals are required

Place, publisher, year, edition, pages
MDPI AG, Basel, Switzerland, 2015. Vol. 2, no 4, 1116-1130 p.
Keyword [en]
integrated optics, waveguides, plasmonic
National Category
Engineering and Technology
Research subject
Information and Communication Technology
Identifiers
URN: urn:nbn:se:kth:diva-198460DOI: 10.3390/photonics2041116OAI: oai:DiVA.org:kth-198460DiVA: diva2:1056456
Funder
Swedish Research Council
Note

QC 20161215

Available from: 2016-12-14 Created: 2016-12-14 Last updated: 2016-12-15Bibliographically approved

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Sun, XuThylén, LarsWosinski, Lech
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Fotonik och mikrovågsteknik, FMIZhejiang-KTH Joint Research Center of Photonics, JORCEP
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