Session Index

We proposed a novel sensor based on an ultracompact leaky-guided liquid-core fiber Mach-Zehnder interferometer (LLCFMZI) for high modulation of interference spectra. The structure is based on a micron-sized hollow-core fiber (HCF) splicing a tilt endface single-mode fiber (SMF) to create a miniature oblique gap for effective access of different liquids.

 

This study presents a highly sensitive liquid-core fiber Michelson interferometer (LCFMI) for sensing temperature (T). The structure is based on single-mode fiber (SMF) fusion splicing a micron-sized liquid-core fiber (LCF) whose volume of liquid is only a few picoliters.

 

This paper shows the fiber grating sensor for detecting acoustic vibration signals. We design two kinds of sensing structures and experimentally demonstrate to confirm the sensing performance in different frequency bands. The wavelet transform is used for analyzing the variety of the non-stationary signal.

 

This paper proposed a novel electric-field fiber sensor composed of a tilted fiber grating (TFBG) and the liquid crystal. Due to that TFBG is insensitive to electric field changes, the index change of TFBG’s cladding layer can be used for indirectly measuring the testing electric field. The variation of the electric-field intensity will create the index change of the liquid crystal and then to cause the loss-dip wavelength shift of the TFBG. By means of monitoring the wavelength shift of spectrum loss-dip to obtain the the testing electric field intensity.

 

In this paper we propose a humidity fiber sensor by using a tapered superstructure fiber grating coated on the thin-film of calcium chloride. The operation mechanism is based on the humidity to cause the index change of calcium chloride and then to result in the grating spectrum variation.