Globally, there is active development of photonic sensors incorporating multidisciplinary
research. The ultimate objective is to develop small, low-cost, sensitive, selective, quick …

Gas sensors play an important role in the increasing trend of industrial automation in recent
years. Hollow core microstructured optical fibers have become a popular material for gas …

Featured Application This article is an extensive overview of the different types of in-fiber
interferometric-based sensors and their technology. Abstract In-fiber interferometric-based …

Gas monitoring in mines and tunnels is the key to ensuring safe production. Nowadays,
optical fiber gas sensors depend on the advantages of nonelectrical signal transmission …

This paper presents a hollow core photonic crystal fiber (HC-PCF) based gas sensor for
monitoring carbon dioxide (CO 2). The HC-PCF based sensor is employed for monitoring …

An optical fiber temperature sensor based on a Mach-Zehnder interferometer (MZI) coated
with a film of polydimethylsiloxane (PDMS) was demonstrated. The MZI was fabricated by a …

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 …

In this article, we propose a rectangular slotted porous core photonic crystal fiber (RSPC-
PCF) for sensing the CO 2 gas. The RSPC-PCF is made of purely silica material with …

Carbon dioxide (CO 2) is a colorless and odorless gas. The imbalanced CO 2
concentrations can have detrimental effects, therefore numerous CO 2 gas sensors have …

The highly sensitive CO 2 detective instrument is intensively studied recently for the
atmosphere protection. Fiber-optic interferometer is widely used as a gas sensor because its …