TY - JOUR
T1 - Simultaneous measurement of refractive index and temperature using a SPR-based fiber optic sensor
AU - Velázquez-González, Jesús Salvador
AU - Monzón-Hernández, David
AU - Moreno-Hernández, David
AU - Martínez-Piñón, Fernando
AU - Hernández-Romano, Iván
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - A surface plasmon resonance-based fiber-optic sensor for simultaneous measurement of refractive index and temperature of liquid samples is proposed and experimentally demonstrated. The sensor consists of a gold-coated MM-SM-MM optical fiber structure, whose sensitive section was partially covered with polydimethylsiloxane (PDMS) to generate two independent SPR resonance dips in the fiber transmission spectrum. One of the dips is generated by the bare gold-coated fiber section whose wavelength resonance is tuned by the refractive index and temperature of the surrounding medium. The other dip that is exclusively used to monitor the temperature variations of the liquid sample, whose central wavelength at 900 nm corresponds to PDMS refractive index at 20 °C, is produced by the polymerized gold-coated fiber section. The high refractive index and temperature sensitivity achieved, 2323.4 nm/RIU and −2.850 nm/°C respectively, the small size, the ease fabrication process, and the bio-compatibility of the proposed device are appealing characteristics that makes it ideal for practical bio-sensing applications.
AB - A surface plasmon resonance-based fiber-optic sensor for simultaneous measurement of refractive index and temperature of liquid samples is proposed and experimentally demonstrated. The sensor consists of a gold-coated MM-SM-MM optical fiber structure, whose sensitive section was partially covered with polydimethylsiloxane (PDMS) to generate two independent SPR resonance dips in the fiber transmission spectrum. One of the dips is generated by the bare gold-coated fiber section whose wavelength resonance is tuned by the refractive index and temperature of the surrounding medium. The other dip that is exclusively used to monitor the temperature variations of the liquid sample, whose central wavelength at 900 nm corresponds to PDMS refractive index at 20 °C, is produced by the polymerized gold-coated fiber section. The high refractive index and temperature sensitivity achieved, 2323.4 nm/RIU and −2.850 nm/°C respectively, the small size, the ease fabrication process, and the bio-compatibility of the proposed device are appealing characteristics that makes it ideal for practical bio-sensing applications.
KW - Metal deposition
KW - Optical fiber sensors
KW - Polydimethylsiloxane (PDMS)
KW - Refractive index and temperature sensing
KW - Surface plasmon resonance
UR - http://www.scopus.com/inward/record.url?scp=85027917156&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2016.09.164
DO - 10.1016/j.snb.2016.09.164
M3 - Artículo
SN - 0925-4005
VL - 242
SP - 912
EP - 920
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -