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Temperature Sensors Based on Polymer Fiber Optic Interferometer
Chemosensors, 2022 Temperature measurements are of great importance in many fields of human activities, including industry, technology, and science. For example, obtaining a certain temperature value or a sudden change in it can be the primary control marker of a chemical ...
Malgorzata Szczerska
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Einstein’s Elevator: World Lines, Michelson–Morley Experiment and Relativistic Paradox
Physics, 2022 We all have in mind Einstein’s famous thought experiment in the elevator where we observe the free fall of a body, and then the trajectory of a light ray.
Mathieu Rouaud
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Advanced research directions in gravitational wave detectors
Физика волновых процессов и радиотехнические системы, 2021 The general principles of gravitational waves detection are considered in this paper. Current gravitational wave detectors represent modernized Michelson interferometer – LIGO-detector.
Ivan P. Ohrymenko +2 more
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Optical Inclinometer Based on a LPG-Taper Series Configuration
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 This article presents the development of an inclinometer device based on a Mach-Zehnder interferometer considering the effects caused by temperature variations. It was demonstrated the operation of a LPG-taper system for angle measurements. The practical
Renato Luiz Faraco Filho +3 more
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Frontiers in Pediatrics, 2022 IntroductionThe study aim was to test the safety and efficacy of a pad with optic fibers developed for monitoring newborn respiratory rate (RR) and heart rate (HR).MethodsThirty New Zealand White rabbits were included, divided by weight into three groups.
Jakub Cubík +13 more
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High-Sensitivity Quantum-Enhanced Interferometers
Photonics, 2023 High-sensitivity interferometers are one of the basic tools for precision measurement, and their sensitivity is limited by their shot noise limit (SNL), which is determined by vacuum fluctuations of the probe field.
Juan Yu +3 more
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Squeezing in Gravitational Wave Detectors
Galaxies, 2022 Injecting optical squeezed states of light, a technique known as squeezing, is now a tool for gravitational wave detection. Its ability to reduce quantum noise is helping to reveal more gravitational wave transients, expanding the catalog of observations
Sheila E. Dwyer +2 more
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Review of acoustical and optical techniques to measure absolute salinity of seawater
Frontiers in Marine Science, 2022 The salinity of seawater is of fundamental importance in climate studies, and the measurement of the variable requires high accuracy and precision in order to be able to resolve its typically small variations in the oceans with depth and over long-time ...
Marc Le Menn, Rajesh Nair
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The Hunt for Environmental Noise in Virgo during the Third Observing Run
Galaxies, 2020 The first twenty years of operation of gravitational-wave interferometers have shown that these detectors are affected by physical disturbances from the surrounding environment. These are seismic, acoustic, or electromagnetic disturbances that are mainly
Irene Fiori +19 more
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Steel Beam Compressive Strain Sensor Using Single-Mode-Multimode-Single-Mode Fiber Structure
IEEE Photonics Journal, 2016 A steel beam compressive strain sensor using single-mode-multimode-single-mode (SMS) fiber structure is demonstrated. Parallel measurements are made using an electrical resistance (ER) strain gauge along with the SMS to sense the compressive strain on ...
S. E. F. Masnan +6 more
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