Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

Optical fibers have been involved in the area of sensing applications for more than four
decades. Moreover, interferometric optical fiber sensors have attracted broad interest for …

Thanks to the peculiarities of optical fiber and its ability to be combined with
nanotechnology, precise and accurate measurements of the changes in optical properties …

An ultra-high sensitivity open-cavity Fabry–Perot interferometer (FPI) gas refractive index
(RI) sensor based on the photonic crystal fiber (PCF) and Vernier effect is proposed and …

Optical fiber sensors based on surface plasma technology have many unique advantages in
specific applications such as extreme environmental monitoring, physical parameter …

Photonic crystal fibers are a kind of fiber optics that present a diversity of new and improved
features beyond what conventional optical fibers can offer. Due to their unique geometric …

A novel highly sensitive airflow sensor based on Fabry–Perot interferometer (FPI) and
Vernier effect is proposed and demonstrated. The sensor is fabricated by splicing a section …

This paper reviews a wide variety of fiber-optic microstructure (FOM) sensors, such as fiber
Bragg grating (FBG) sensors, long-period fiber grating (LPFG) sensors, Fabry-Perot …

In-line fiber optic interferometers have attracted intensive attention for their potential sensing
applications in refractive index, temperature, pressure and strain measurement, etc. Typical …

A miniature and highly sensitive optic fiber temperature sensor using a PDMS-filled air-
microbubble Fabry-Perot (FP) interferometer (PAFPI) in a hollow-core fiber (HCF) is …