The generation of dual-wavelength polarization-color domains (PCD) in a fiber ring laser is experimentally demonstrated. Wavelength-resolved measurements validate the existence of color domains (CD). Simultaneously, polarization-resolved measurements confirm the existence of polarization domain walls. The formation of PCD is attributed to cross-gain saturation combined with cross-polarization coupling through optical Kerr effect induced by the high nonlinear fiber.

中文翻译：

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光纤环形激光器中的偏振色域

实验证明了光纤环形激光器中双波长偏振色域 (PCD) 的生成。波长分辨测量可验证色域 (CD) 的存在。同时，极化分辨测量证实了极化畴壁的存在。PCD的形成归因于交叉增益饱和结合交叉极化耦合通过高非线性光纤引起的光学克尔效应。