Results 21 to 30 of about 131,065 (169)

Rapid Scanning of the Spectral Line Profile With [PDF]

open access: yesKirkuk Journal of Science, 2011
The problem of rapid scanning of spectral line profiles with help of Fabry-Perot Interferometer, and to investigate the physical parameters of these profiles is discussed.
Saalaar Z. Mohamed
doaj   +1 more source

High-spectral-resolution Fabry-Pérot interferometers overcome fundamental limitations of present volcanic gas remote sensing techniques

open access: yesFrontiers in Earth Science, 2023
Remote sensing (RS) of volcanic gases has become a central tool for studying volcanic activity. For instance, ultraviolet (UV) skylight spectroscopy with grating spectrographs (GS) enables SO2 (and, under favourable conditions, BrO) quantification in ...
Jonas Kuhn   +15 more
doaj   +1 more source

Laser Doppler interferometer based on a solid Fabry–Perot etalon for measurement of surface velocity in shock experiments

open access: yesMeasurement Science and Technology, 2008
This study presents an original optical system designed for measuring the free surface velocity for shock wave diagnostics. The system is based on a solid Fabry–Perot etalon interferometer coupled to a tunable, single frequency laser. The setup assembled for this purpose can measure velocities up to 200 m s−1 and has a resolution time of about 1 ns ...
Arrigoni, M.   +4 more
openaire   +3 more sources

Analytical method to find the optimal parameters for gas detectors based on correlation spectroscopy using a Fabry-Perot interferometer [PDF]

open access: yes, 2007
Several designs of infrared sensors use a Fabry-Perot Interferometer (FPI) to modulate the incident light. In this work we analyse the particular case where the FPI fringes are matched with very well defined ro-vibrational absorption lines of a target ...
Rutt, Harvey N.   +1 more
core   +1 more source

Characterization of a novel three-section tunable slotted fabry-perot laser [PDF]

open access: yes, 2010
A novel three-section tunable slotted-Fabry-Perot laser has been examined. Characterizations of the linewidth, SMSR and RIN indicate that this type of laser may be a suitable source for dynamic networks employing advanced optical modulation ...
Reid, Douglas A.   +8 more
core   +3 more sources

Self-coherent optical transmission using a narrow linewidth tunable slotted fabry-perot laser [PDF]

open access: yes, 2010
A narrow linewidth slotted Fabry-Perot laser has been employed in a self-coherent optical transmission system. A comparison of the system performance of the tunable slotted laser with a SG-DBR laser has also been ...
Anandarajah, Prince M.   +17 more
core   +3 more sources

Micro-machining Techniques for the Fabrication of Fibre Fabry-Perot Sensors [PDF]

open access: yes, 2006
Fabry-Perot optical fibre sensors have been used extensively for measuring a variety of parameters such as strain, temperature, pressure and vibration. Conventional extrinsic fibre Fabry-Perot sensors are associated with problems such as calibration of ...
Machavaram, V. R.
core   +4 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

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

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