Highly sensitive micro-hygrometer based on microfiber knot resonator
Document Type
Article
Publication Date
1-1-2019
Abstract
In this work, we experimentally demonstrated a microfiber knot resonator (MKR) for ambient relative humidity (RH) measurement. The microfiber device was manufactured by forming a ring from a low-loss microfiber, fabricated from a single-mode fiber (SMF) by using flame-heating technique. The resonator was successfully formed when a periodic output resonance spectrum was achieved. Without employing any coating hygroscopic material, the MKR was observed to highly sensitive to the variation of ambient RH ranging from of 30% RH to 94% RH. The proposed device is an extremely compact and fast response sensor, useful for a wide spectrum of industrial applications.
Keywords
Optical fiber sensor, Relative humidity measurement, Microfiber knot resonator
Divisions
Science
Funders
National Natural Science Foundation of China (NSFC) (61327012, 61377087),National High Technology Research and Development Program 863, China (2009AA06Z203),Ministry of Education Project of Science and Technology Innovation, China (Z08119),Ministry of Science and Technology Project of International Cooperation, China (2008CR1063),Shaanxi Province Project of Science and Technology Innovation, China (2008ZDGC-14, 2009ZKC01-19),ShaanXi Young Scientist Star Program, China (2016 KJXX-04),Projects of Scientific Research Plan of ShaanXi Education Department, China (15JK1751),Northwest University (NWU) Young Scientist Support Program (NJ00089),Fellow of the Royal Geographical Society (RGS), United Kingdom,Ministry of Education Malaysia FRGS, Malaysia grant (FP033-2017A)
Publication Title
Optics Communications
Volume
431
Publisher
Elsevier