Liquid sensors using refractive intensity at the end-face of a glass fiber connected to fiber-Bragg grating

Characteristics of optical fiber refractive index sensor based on surface plasmon resonance

“…So, recently, there are many researches focus on the study of refractive index sensor. These include fiber Bragg gratings [5–9], photonics crystal fiber [10–12], Fabry–Perot [13–15], and core‐exposed or tapered fiber [16–18]. To enhance the sensitivity to a certain physical parameter such as refractive index, the guiding properties of optical fiber have to be weakened.…”

Operation of an opto-mechanical system using a double-cell design for liquid color recognition

“…A novel approach in use of an elastomer for monitoring of pressure using plastic optical fiber is given in [9]. In another investigation liquid sensors using refractive intensity at the end-face of a glass fiber connected to fiberBragg grating is reported [10]. A fiber-optic temperature sensor based on the deposition of a thermochromic material on an adiabatic taper is described in Ref.…”

Polymer Optical Fiber Intensity-Based Sensor for Liquid-Level Measurements in Volumetric Flasks for Industrial Application

“…By using reflective intensity modulation to represent a change in the surrounding material, submersion or flooding can be monitored. These applications can be carried out in oil tanks, flood areas, and underground [1,2].…”

“…Most liquid-level optical sensors are discrete or point-level sensors [4], while others allow continuous measurements [5]. In some cases, the sensor is a sensitive element by detecting radiation losses in bends [6] and reflective intensity variations [1] because of surrounding material changes. In these cases the fiber is submerged slightly in the liquids to indicate its presence thus performing intrusive sensors.…”