Temperature sensing using CdSe quantum dot doped poly(methyl methacrylate) microfiber
Document Type
Article
Publication Date
1-1-2017
Abstract
This work describes noncontact temperature measurements using wavelength shifts of CdSe quantum dot (QD) doped poly(methyl methacrylate) microfiber. The sensor is fabricated using a drawing method by bridging two tapered single mode fibers with a polymer microfiber (PMF) approximately 3 μm in diameter. A set of a PMF section with and without the doping of the CdSe-ZnS core-shell QD was applied as sensing probes and used to measure temperatures over the range of 25°C-48°C. The experimental results show that the doped PMF is able to achieve a higher performance with a reasonably good sensitivity of 58.5 pm/°C based on the wavelength shifting, which is about 18 times that of the undoped PMF temperature sensitivity. The proposed sensor showed a linear temperature sensing range that matches well with the physiologically relevant temperatures. Moreover, these results open the way for long-Term and high-stability realization of temperature sensing optical fibers.
Keywords
Esters, Nanocrystals, Optical fiber fabrication, Optical fibers, Semiconductor quantum dots, Single mode fibers, Temperature measurement, Zinc sulfide
Publication Title
Applied Optics
Divisions
fac_eng
Volume
56
Issue
16
Publisher
Optical Society of America