Results 31 to 40 of about 6,429 (170)

Fiber Optic Fabry-Perot Current Sensor Integrated with Magnetic Fluid Using a Fiber Bragg Grating Demodulation

open access: yesSensors, 2015
An optical fiber current sensor based on Fabry-Perot interferometer using a fiber Bragg grating demodulation is proposed. Magnetic fluid is used as a sensitive medium in fiber optical Fabry-Perot (F-P) cavity for the optical characteristic of magnetic ...
Ji Xia, Qi Wang, Xu Liu, Hong Luo
doaj   +1 more source

Accelerated High-Resolution Photoacoustic Tomography via Compressed Sensing [PDF]

open access: yes, 2016
Current 3D photoacoustic tomography (PAT) systems offer either high image quality or high frame rates but are not able to deliver high spatial and temporal resolution simultaneously, which limits their ability to image dynamic processes in living tissue.
Arridge, Simon   +7 more
core   +2 more sources

Response of a New Low-Coherence Fabry-Perot Sensor to Hematocrit Levels in Human Blood

open access: yesSensors, 2014
In this paper, a low-coherence Fabry-Perot sensor with a spectrally measured signal processing response to the refractive index of liquids is presented.
Małgorzata Jędrzejewska-Szczerska
doaj   +1 more source

High-precision fiber-optic temperature sensor based on Fabry-Perot interferometer with reflective thin-film multilayer structures

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
An embodiment of a fiber-optic temperature sensor based on a Fabry-Perot interferometer and a scheme for interrogating an experimental sample of the sensor are proposed.
I. D. Moor   +6 more
doaj   +1 more source

High-performance versatile setup for simultaneous Brillouin-Raman micro-spectroscopy [PDF]

open access: yes, 2017
This is the author accepted manuscript. The final version is available from American Physical Society via the DOI in this record.Brillouin and Raman scattering spectroscopy are established techniques for the nondestructive contactless and label-free ...
Caponi, S   +15 more
core   +3 more sources

Higher-order Laguerre-Gauss interferometry for gravitational-wave detectors with in situ mirror defects compensation [PDF]

open access: yes, 2015
The use of higher-order Laguerre-Gauss modes has been proposed to decrease the influence of thermal noise in future generation gravitational-wave interferometric detectors.
Allocca, A.   +7 more
core   +5 more sources

Pulsed laser linewidth measurement using Fabry–Pérot scanning interferometer

open access: yesResults in Physics, 2016
We apply the Fabry–Pérot (FP) scanning interferometer, which is normally used for continuous wave (CW) laser linewidth measurement, for the measurement of pulsed laser linewidths.
Junwen Xue   +8 more
doaj   +1 more source

Frequency stability characterization of a broadband fiber Fabry-Perot interferometer [PDF]

open access: yes, 2017
An optical etalon illuminated by a white light source provides a broadband comb-like spectrum that can be employed as a calibration source for astronomical spectrographs in radial velocity (RV) surveys for extrasolar planets.
Diddams, Scott A.   +5 more
core   +3 more sources

Optical fiber sensors: a route from University of Kent to Portugal [PDF]

open access: yes, 2011
In this work the authors first summarily describe the main topics that were the subject of their post-graduate activity in fiber sensing at the Applied Optics Group of University of Kent in the late 1980s and early 1990s.
Lobo Ribeiro, Antonio B.   +1 more
core   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

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