Mabrouki A, Gadonna M, Le Naour R
Appl Opt. 1996 Jul 1;35(19):3591-6. doi: 10.1364/AO.35.003591.
Polarization characterization of a Mach-Zehnder interferometer, based on the state of polarization (SOP) and power measurement at the interferometer output, is presented. We study the SOP and degree of polarization (DOP) of the output light, first as a function of the light power in each arm of the interferometer for a fixed input SOP and DOP, and second as a function of the SOP's in each arm of the interferometer for a fixed input power. Stokes formalism and the Poincaré sphere are used for simultaneous representation of the SOP and DOP, as well as their evolution. It is shown that the SOP and DOP stability and also the output light power are highly dependent on the light source coherence. Knowledge of these different parameters leads to configurations that allow simultaneous control of the SOP and DOP. We can hence realize a quasi-monochromatic nonpolarized light source, which is useful for the polarization-independent characterization of optical components.
本文基于马赫-曾德尔干涉仪输出端的偏振态（SOP）和功率测量，对其偏振特性进行了表征。我们研究了输出光的SOP和偏振度（DOP），首先是在固定输入SOP和DOP的情况下，作为干涉仪各臂光功率的函数；其次是在固定输入功率的情况下，作为干涉仪各臂SOP的函数。斯托克斯形式和庞加莱球用于同时表示SOP和DOP及其演化。结果表明，SOP和DOP的稳定性以及输出光功率高度依赖于光源的相干性。了解这些不同参数可实现对SOP和DOP的同时控制。因此，我们可以实现一种准单色非偏振光源，这对于光学元件的偏振无关表征非常有用。
