翻訳と辞書 Words near each other ・ Polarization (waves) ・ Polarization controller ・ Polarization density ・ Polarization division multiple access ・ POlarization Emission of Millimeter Activity at the Sun ・ Polarization identity ・ Polarization in astronomy ・ Polarization mixing ・ Polarization mode dispersion ・ Polarization of an algebraic form ・ Polarization ripples ・ Polarization rotator ・ Polarization scrambling ・ Polarization spectroscopy ・ Polarization-division multiplexing ・ Polarization-maintaining optical fiber ・ Polarized 3D system ・ Polarized light microscopy ・ Polarized light pollution ・ Polarized pluralism ・ Polarized target ・ Polarizer ・ Polarizing filter (photography) ・ Polarizing organic photovoltaics ・ Polarjazz ・ Polarkreis 18 ・ Polarmail Ledge ・ Polarn O. Pyret ・ Polarography ・ Polaroid Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Polarization-maintaining optical fiber ： ウィキペディア英語版 Polarization-maintaining optical fiber In fiber optics, polarization-maintaining optical fiber (PMF or PM fiber) is a single-mode optical fiber in which linearly polarized light, if properly launched into the fiber, maintains a linear polarization during propagation, exiting the fiber in a specific linear polarization state; there is little or no cross-coupling of optical power between the two polarization modes. Such fiber is used in special applications where preserving polarization is essential. ==Polarization crosstalk== In an ordinary (non-polarization-maintaining) fiber, two polarization modes (say vertical and horizontal polarization) have the same nominal phase velocity due to the fiber's circular symmetry. However tiny amounts of random birefringence in such a fiber, or bending in the fiber, will cause a tiny amount of crosstalk from the vertical to the horizontal polarization mode. And since even a short portion of fiber, over which a tiny coupling coefficient may apply, is many thousands of wavelengths long, even that small coupling between the two polarization modes, applied coherently, can lead to a large power transfer to the horizontal mode, completely changing the wave's net state of polarization. Since that coupling coefficient was unintended and a result of arbitrary stress or bending applied to fiber, the output state of polarization will itself be random, and will vary as those stresses or bends vary; it will also vary with wavelength. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Polarization-maintaining optical fiber」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.