TITLE:
Numerical Calculation of Seawater Temperature Sensing Based on Polydimethylsiloxane-Coated Microfiber Knot Resonator
AUTHORS:
Hongjuan Yang, Shanshan Wang, Kening Mao, Guoxiang Li, Jing Wang
KEYWORDS:
Seawater Temperature, Sensor, Microfiber Knot Resonators, Coating
JOURNAL NAME:
Optics and Photonics Journal,
Vol.4 No.4,
April
29,
2014
ABSTRACT:
A seawater temperature sensing method based
on polydimethylsiloxane-coated (PDMS-coated) microfiber knot resonator (MKR) is
proposed, which has the advantages of high sensitivity and weak salinity
dependence. The dependences of the temperature sensitivity on fiber diameter,
coating thickness and probing wavelength are theoretically investigated and the
range of coating thickness for weak salinity dependence is obtained. By
optimizing the parameters of the seawater temperature sensing system, when the
probing wavelength is 1550 nm, the fiber diameter is 1 μm, and the coating
thickness is 5 μm, the sensitivity can reach to 0.197 nm/°C. Results shown here
are beneficial to find the optimal parameters for the temperature sensors with
high sensitivity and weak salinity dependence.