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Nano Research & Applications
ISSN: 2471-9838
January 28-29, 2019
Barcelona, Spain
Nanomat 2019
Page 18
18
th
Edition of International Conference on
Emerging Trends in
Materials Science and
Nanotechnology
P
lasmonic sensors have been the promising structure to
providehighsensitivityonrefractiveindexdetection.However,
their sensitivity is limited within the narrow bandwidth of device
near resonance. Herein we introduce a novel structure about the
improvement in detecting range of the refractive index through a
high-contrast-index curved waveguide surrounding with an outer
gold ring. The proposed detection technique is based on the
output power measurement of the curved waveguide that offers
a linear response over an ultra-broad range of the refractive index
of a surrounding medium from n = 1 to 2.21. Meanwhile, the high
refractive index resolution of 4.03×10-10 RIU is achievable for
such the broad testing range. The application could be gas or
aqueous chemical sensing. Furthermore, the proposed detection
approach based on the optical powermeasurement is achievable
by the integration with an on-chip photodiode so that such a
compact design could be a multifunctional and high sensitive
sensor-on-chip device.
Biography
Chii-Chang Chen received his PhD in Université de Franche-Comté (France)
in 1998. In 1998, he worked in Laboratoire d’Optique P.M. Duffieux of Be-
sançon to study high-speed LiNbO3 modulators. In 2002, he joined Insti-
tute of Optical Sciences of NCU as an Assistant Professor. He joined Fried-
rich-Schiller-Universität Jena (Germany) as a visiting researcher in 2005. He
joined Université Paris 13 (France) as a visiting researcher in 2006, 2007,
2011 and 2018. He became Professor and Distinguished Professor of NCU
since 2009 and 2010, respectively. His current research interests are na-
no-optics, photonic neural networks, photonic crystals and bio-sensors.
trich@dop.ncu.edu.twPlasmonic curved waveguide sensor with
ultrabroad detection range
Chii-Chang Chen
National Central University, Taiwan
National Taipei University of Technology, Taiwan
Chii-Chang Chen, Nano Res Appl 2019, Volume 5
DOI: 10.21767/2471-9838-C1-029