Title
Temperature sensing in seawater based on microfiber knot resonator.
Abstract
Ocean internal-wave phenomena occur with the variation in seawater vertical temperature, and most internal-wave detections are dependent on the measurement of seawater vertical temperature. A seawater temperature sensor based on a microfiber knot resonator (MKR) is designed theoretically and demonstrated experimentally in this paper. Especially, the dependences of sensing sensitivity on fiber diameter and probing wavelength are studied. Calculated results show that sensing sensitivity increases with the increasing microfiber diameter with the range of 2.30-3.91 mu m and increases with the increasing probing wavelength, which reach good agreement with results obtained by experiments. By choosing the appropriate parameters, the maximum sensitivity measured can reach to be 22.81 pm/degrees C. The seawater temperature sensor demonstrated here shows advantages of small size, high sensitivity, easy fabrication, and easy integration with fiber systems, which may offer a new optical method to detect temperature of seawater or ocean internal-wave phenomenon and offer valuable reference for assembling micro sensors used for other parameters related to seawater, such as salinity, refractive index, concentration of NO3- and so on.
Year
DOI
Venue
2014
10.3390/s141018515
SENSORS
Keywords
Field
DocType
microfiber,knot resonator,seawater temperature,sensing,ocean internal-wave
Optical fiber,Analytical chemistry,Refractometry,Fiber,Resonator,Optics,Seawater,Microfiber,Engineering,Wavelength,Refractive index
Journal
Volume
Issue
ISSN
14
10
1424-8220
Citations 
PageRank 
References 
4
1.04
1
Authors
5
Name
Order
Citations
PageRank
Hongjuan Yang141.04
Shanshan Wang241.38
Xin Wang341.72
Jing Wang4224.50
Yipeng Liao541.04