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etalon

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etalon

In optical networking, an etalon is a passive filter that uses a Fabry-Perot cavity. See Fabry-Perot.


etalon [′ed·əl‚än]
(optics)
Two adjustable parallel mirrors mounted so that either one may serve as one of the mirrors in a Michelson interferometer; used to measure distances in terms of wavelengths of spectral lines.
An instrument similar to the Fabry-Pérot interferometer, except that the distance between the plates is fixed. Also known as Fabry-Pérot etalon.


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An etalon of the material is illuminated with synchrotron radiation, and the interference fringes in the transmittance spectrum are measured using a Fourier transform spectrometer.
The TrueLock EWL, featuring patent-pending, thermally-controlled etalon technology, is expected to complete Telcordia qualification by October 14, 2002.
These ideas came together in a fascinating assemblage that Duchamp completed in 1914 and called "3 Stoppages Etalon," or three standard stopping points.
 
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