Photonic crystal fibers (PCFs) are a special class of optical fibers with a periodic
arrangement of microstructured holes located in the fiber's cladding. Light confinement is …

This paper overviews recent development in gas detection with micro-and nano-engineered
optical fibers, including hollow-core fibers, suspended-core fibers, tapered optical …

Recent progress in gas detection with hollow-core microstructured optical fibers (HC-MOFs)
and direct absorption/photothermal interferometry spectroscopy are reported. For direct …

In this study, a new type of highly sensitive fiber-optic Fabry–Perot interferometer (FFPI) is
proposed with a high sensitivity on a wide refractive index (RI) measurement range based …

A novel and compact interferometric refractive index (RI) point sensor is developed using
hollow-core photonic crystal fiber (HC-PCF) and experimentally demonstrated for high …

Diagnosis of diseases through exhalation is a new, noninvasive method. In this study, a new
photonic crystal fiber (PCF) has been proposed for detecting ammonia gas in breath. The …

In this paper, we report a novel fiber-optic Fabry-Perot interferometric (FFPI) temperature
sensor based on the difference of thermal expansion coefficient between fused silica and …

In this paper, we present a quantitative near-infrared spectroscopy measurement of the
chemical compositions of gas mixtures, such as natural gas, based on a photonic bandgap …

A tubular lattice nodeless hollow core photonic crystal fiber (NHC-PCF) with unsymmetrical
gap design is proposed. The design relies on one large unsymmetrical gap between the …

A novel structure of a fiber-optic Fabry–Perot interferometric (FFPI) temperature sensor is
presented in this paper. The design of the sensor is analyzed and evaluated by the finite …