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POLARIZATION DEPENDENCE

Photonics Spectra
Sep 2005
dBm Optics Inc.Request Info
 
A technique for characterizing the polarization dependence of polarization-sensitive optical devices has been announced by dBm Optics Inc. It allows rapid extraction of the spectra corresponding to the TE- and TM-incident Stokes vectors from a fast-matrix polarization-dependent loss (PDL) measurement. It eliminates the need for manual calibrations and, using the Component Spectrum Analyzer, takes advantage of the Mueller matrix calculations to extract the TE and TM information on the fly. Wavelength dependence of the two states is displayed, along with the insertion loss and the PDL. Polarization dependence of the bandwidth and of the center wavelength also is displayed automatically.


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GLOSSARY
polarization
With respect to light radiation, the restriction of the vibrations of the magnetic or electric field vector to a single plane. In a beam of electromagnetic radiation, the polarization direction is the direction of the electric field vector (with no distinction between positive and negative as the field oscillates back and forth). The polarization vector is always in the plane at right angles to the beam direction. Near some given stationary point in space the polarization direction in the beam...
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