| タイトル | Properties of a Variable-Delay Polarization Modulator |
| 本文（外部サイト） | http://hdl.handle.net/2060/20110015421 |
| 著者（英） | Moseley, Harvey; Henry, Ross; Chuss, David T.; Hui, Howard; Krenjy, Megan; Wollack, Edward J.; Novak, Giles; Juarez, Aaron J. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2011-01-01 |
| 言語 | eng |
| 内容記述 | We investigate the polarization modulation properties of a variable-delay polarization modulator (VPM). The VPM modulates polarization via a variable separation between a polarizing grid and a parallel mirror. We find that in the limit where the wavelength is much larger than the diameter of the metal wires that comprise the grid, the phase delay derived from the geometric separation between the mirror and the grid is sufficient to characterize the device. However, outside of this range, additional parameters describing the polarizing grid geometry must be included to fully characterize the modulator response. In this paper, we report test results of a VPM at wavelengths of 350 micron and 3 mm. Electromagnetic simulations of wire grid polarizers were performed and are summarized using a simple circuit model that incorporates the loss and polarization properties of the device. |
| NASA分類 | Instrumentation and Photography |
| レポートNO | GSFC.JA.4728.2011 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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