Experiments have been carried out to study the refractive index of well water using the principle of refraction of a laser beam on a hollow prism.
To our best knowledge, we presented the methane gas sensor based on VE in two parallel optical fiber Sagnac loops for the first time. The designed optical fiber methane gas sensor
Imagine a world where the Internet doesn''t just connect but senses—detecting earthquakes, monitoring battery health, or safeguarding
Moreover, the high sensitivity of optical fiber sensors and their multiplexing capability allow the integration of multifunctional sensing structures on a single
The work describes a surface plasmon resonance (SPR) sensor that measures the liquid level and refractive index (RI) simultaneously. The sensor is
This paper aims to simplify the fabrication and broaden the applications of hollow fiber-based surface plasmon resonance (SPR) sensors for low refractive index (RI) detection. The authors propose an
It''s also used in thin-film optics, often as antireflection coatings on optical devices. Beyond its optical applications, silicon dioxide finds use in ceramics, construction, and even as a food additive.
Unlike other micro/nano devices, fiber optic components can incorporate embedded high-resolution microsensors, offering unique advantages in self-sensing and micro/nano execution .
In some cases, it is necessary to carry out the calibration procedure under ideal conditions, avoiding sudden temperature changes, since the refractive index of liquids decreases with increasing
The FPI-based optical fiber sensors having a variety of cavity lengths have been constructed in the literature to measure the strain, temperature, magnetic field, and refractive index of
Fiber optic sensors are compact because the detection circuit is located in the amplifier, allowing for detection even in narrow spaces. Installation and
In this present work we report fabrication of fiber optic liquid refractive index (RI) measurement sensor based on Michelson Interferometer method. This sensor.
We present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature
In this paper, a dual-parameter liquid level and refractive index (R.I.) sensor is fabricated using three pieces of bare polymer optical fibers (POFs), which can independently and...
An optical fiber, partially stripped of its cladding is shown to sense refractive index of a liquid in which the uncladded sensing region is immersed, to a high degree of precision and over a
A simple fiber optic sensor is presented to determine the refractive index of liquids. The study shows that the output light intensity peak observed in various liquids is function of the refractive index of the
Refractive index of the photoresists IP-S, IP-Dip, IP-L, and OrmoComp depending on the UV dose. For all photoresists the refractive index rises with longer UV curing times over the entire
In this paper, we propose a sensor for determining the RI of liquids based on femtosecond laser (fs-laser) writing of a dual-side polished singlemode–multimode–singlemode (SMS) fiber.
A compact dual-parameter optical fiber sensor combining surface plasmon resonance (SPR) and lossy mode resonance (LMR) technologies was proposed for the simultaneous
Abstract We demonstrate a fiber optics sensing structure for the measurement of the refractive index of liquid samples at multiple spatial
This review is focused on microstructured optical fiber sensors developed in recent years for liquid RI sensing. The review is divided into three
Basic fundamentals of FBG and recent progress of fiber Bragg grating-based sensors used in various applications for temperature, pressure,
The intensity of light signal transmitted through an optical fiber, whose cladding over a finite length is removed, is used as a sensor of refractive index of liquids, in which the fiber is immersed.
Abstract This paper proposed a cascaded fiber structure comprising single mode-hollow core-single mode convex-taper fibers (SHSC), where the air column of the hollow-core fiber (HCF) is filled by the
For water, the refractive index is typically **1.333** at room temperature, but this value changes with impurities, temperature, and pressure. In optics, refractive index is crucial for designing lenses,
However, liquid detection involves complex data processing, and the difficulty in measuring the refractive index makes it challenging to distinguish between different types of liquids. In this article, a label-free,
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