Variable Waist-Diameter Mach-Zehnder Tapered-Fiber Interferometer as Humidity and Temperature Sensor

In-line single-mode tapered-fiber Mach-Zehnder interferometer (MZI-SMTF) with average waist diameters (davg) of 4.05 and 2.89 μm have been fabricated, and both the temperature and the humidity sensitivity of the surrounding media have been measured and compared. The humidity and the temperature were...

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Bibliographic Details
Published in:IEEE sensors journal 2016-08, Vol.16 (15), p.5987-5992
Main Authors: Soltanian, M. R. K., Sharbirin, A. S., Ariannejad, M. M., Amiri, I. S., De La Rue, R. M., Brambilla, G., Rahman, B. M. A., Grattan, K. T. V., Ahmad, H.
Format: Article
Language:English
Subjects:
Chambers
Fiber sensor
Humidity
humidity sensor
inline MZI
Interferometers
Mach-Zehnder interferometers
Media
Optical fiber sensors
Optical fibers
Sensors
Stability
tapered fiber
Temperature measurement
temperature sensor
Temperature sensors
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Summary:In-line single-mode tapered-fiber Mach-Zehnder interferometer (MZI-SMTF) with average waist diameters (davg) of 4.05 and 2.89 μm have been fabricated, and both the temperature and the humidity sensitivity of the surrounding media have been measured and compared. The humidity and the temperature were measured over the ranges from 0% to 90% and 28 °C to 40 °C, respectively. The stability of the system at 50%RH and 90%RH was investigated, while the temperature of the chamber was maintained at about 28 °C. The humidity and temperature sensitivity resolution values were 0.02 nm/%RH and 0.05 nm/0.1 °C for the MZI-SMTF-1 with an average waist diameter of 4.05 μm, while they were 0.01 nm/%RH and 0.025 nm/0.1 °C for the MZI-SMTF-2 with an average waist diameter of 2.89 μm.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2016.2573961