scanning Fabry-Perot interferometer
A two channel Fabry Perot interferometer with thermoelectric cooled CCD detectors for neutral wind measurement in the upper atmosphere
... The original system of the present FPI had one fish-eye imaging lens as the front optics and three CCD detectors with a liquid-nitrogen cooling system (Shiokawa et al., 2001). Because the imaging FPI showed significant ...
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Analysis of a Piezo Electric Driver Circuit for Use in a Fabry-Perot Interferometer
... Fabry-perot interferometer (FPI) is a common optical element widely used long before the advent of ...a Fabry-perot interferometer [1]-[2] consists of two closely spaced and ...
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A comparison of thermospheric winds and temperatures from Fabry Perot Interferometer and EISCAT Radar measurements with models
... 1997, Fabry-Perot interferometers (FPI) were operated in northern Scandinavia from the EISCAT radar site at Ramfjord ...Japanese interferometer (Ishii et ...sequential scanning of the sky (for ...
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Thermospheric wind variations observed by a Fabry–Perot interferometer at Tromsø, Norway, at substorm onsets
... Tromsø and Bear Island stations. A local substorm event was identified by visual inspection as an obvious decrease (> 50 nT) from the quiet-time baseline in the X-component of the magnetic field data (positive north), ...
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High latitude thermospheric wind study using a Fabry–Perot interferometer at Tromsø in Norway: averages and variations during quiet times
... In Fig. 3a, b, f, g, the blue rectangle at the top of the panel indicates the quiet-time period as defined in “Method” the red rectangle indicates the interval in which there is large deviation from the average winds, ...
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A Fabry–Perot interferometer-based camera for two-dimensional mapping of SO 2distributions
... taneously. However, typical DOAS (and COSPEC) measure- ments provide data only in a single viewing direction. One- dimensional data (e.g., cross sections of volcanic plumes) can be derived by scanning DOAS schemes ...
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Optical gas sensors based on correlation spectroscopy using a Fabry Perot interferometer
... Another way to implement the TAS technique is by tuning or scanning the narrow width laser emission along a relatively wide frequency region, where the target absorption spectrum occurs [56]. This method permits ...
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Development of low cost sky scanning Fabry Perot interferometers for airglow and auroral studies
... nm and 557.7 nm, respectively. One FPI (FP01), possessing a large aperture etalon (diameter: 116 mm), was installed at the EISCAT Tromsø site in 2009. The other FPIs, using 70-mm diameter etalons, were installed in ...
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Analytical method to find the optimal parameters for gas detectors based on correlation spectroscopy using a Fabry Perot interferometer
... by scanning the FPI cavity length over one half of the reference wavelength. Here we present an analytical method based on the Fourier transform which simplifies the procedure to determine the sensor response. ...
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Comparing high latitude thermospheric winds from Fabry–Perot interferometer (FPI) and challenging mini satellite payload (CHAMP) accelerometer measurements
... FPI wind values taken from Fig. 9 in Hedin et al. (1991) are also plotted. These values are measurements from the University of Alaska (U.Alaska) FPI that collected Longyearbyen data in 1980, 1981 and 1983. The aim is to ...
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The transmission curve of a fabry perot system based on plane and spherical mirror separation
... In this study two sets of Fabry Perot interferometer will be investigated. These are plane and spherical sets of mirror. The study is made to obtain experience in handling the correct alignment and ...
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Using a Confocal Fabry - Perot Interferometer to Analyze the Laser Frequency Stability
... a Fabry-Perot interferometer depends on the physical separation between the interferometer's ...a Fabry-Perot interferometer can be tuned precisely to form transmission peaks ...
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Study on Insertion Loss of Fiber Fabry Perot Filters
... Fiber Fabry-Perot (FFP) filters have been widely used in optical fiber communications, and insertion loss (IL) is one of its important characteristics. Based on theoretically analysis, factors related to IL ...
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Theory of non-Abelian Fabry-Perot interferometry in topological insulators
... One of the most interesting features of the system that we consider is that the two Majorana fields that appear in this action can becomes spatially separated when a superconduct- ing region is sandwiched in between the ...
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RSOA BASED 10G WDM FOR LONG REACH PON USING MANCHESTER CODING FOR REMODULATION.
... Fabry Perot lasers are suited for high performance links. The output from laser is modulated using external Manchester modulator and fed to the Mux. Optical filters modulate the effects of AWG in an actual ...
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Tunable micro-electro mechanical Fabry Perot etalon
... Several uses for Fabry Perot physics have been investigated and implemented over the years. In general there are common ways of approaching the problem of the adjustable device designed to work in the ...
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Aalto-1 nanosatellite – technical description and mission objectives
... adjustable Fabry – Perot mirrors, supporting optics and an RGB CMOS sensor, with an auxiliary VIS – camera confirming the location imaged and whether the image is worth downlinking (there might be cloud ...
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Modeling of Vibration Sensing with Variable Fabry-Perot System
... a Fabry-Perot interferometer by deflection of a diaphragm and interferometric detection of the stress-dependent resonant frequency of an optically excited vibrating beam ...those ...
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Intrinsic Fabry-Perot Sensors for Magnetic Field Detection
... intrinsic Fabry-Perot cavity comprised of two identical Bragg gratings, we could obtain a more accurate detector with the removal of photo-induced birefringence in the detection ...intrinsic ...
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A Theoretical Study and Numerical Simulation of a Quasi-Distributed Sensor Based on the Low-Finesse Fabry-Perot Interferometer: Frequency-Division Multiplexing
... The quasi-distributed optical fibre sensor based on the low-finesse Fabry-Perot interferometer, 288. was studied theoretically and simulated numerically[r] ...
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