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Phase-controlled polarization modulators
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Moseley, S. H. Chuss, D. T. Wollack, E. J. Novak, G. U-Yen, K. Krejny, M. Pisano, G. |
| Copyright Year | 2012 |
| Description | We report technology development of millimeter/submillimeter polarization modulators that operate by introducing a a variable, controlled phase delay between two orthogonal polarization states. The variable-delay polarization modulator (VPM) operates via the introduction of a variable phase delay between two linear orthogonal polarization states, resulting in a variable mapping of a single linear polarization into a combination of that Stokes parameter and circular (Stokes V) polarization. Characterization of a prototype VPM is presented at 350 and 3000 microns. We also describe a modulator in which a variable phase delay is introduced between right- and left- circular polarization states. In this architecture, linear polarization is fully modulated. Each of these devices consists of a polarization diplexer parallel to and in front of a movable mirror. Modulation involves sub-wavelength translations of the mirror that change the magnitude of the phase delay. |
| File Size | 2122798 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120011712 |
| Archival Resource Key | ark:/13960/t5s80c92m |
| Language | English |
| Publisher Date | 2012-07-01 |
| Access Restriction | Open |
| Subject Keyword | Phase Modulation Circular Polarization Prototypes Millimeter Waves Diplexers Submillimeter Waves Linear Polarization Mirrors Polarization Modulation Modulators Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
