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
Divisions
fac_eng
Publication Title
Applied Optics
Volume
56
Issue
16
Publisher
Optical Society of America