School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459.
Opt Lett. 2011 Apr 15;36(8):1425-7. doi: 10.1364/OL.36.001425.
A magneto-optic modulator with a magnetic fluid film inserted into an optical fiber Sagnac interferometer is proposed. The magnetic fluid exhibits variable birefringence and Faraday effect under external magnetic field that will lead to a phase difference and polarization state rotation in the Sagnac interferometer. As a result, the intensity of the output light is modulated under the external magnetic field. Moreover, the modulator has a high extinction ratio and can easily be integrated in a single-mode fiber system. The performance of the modulator is not affected by ambient temperature variation from room temperature to 40 °C.
提出了一种在光纤萨格纳克干涉仪中插入磁流体膜的磁光调制器。在外磁场作用下，磁流体呈现出可变双折射和法拉第效应，这将导致萨格纳克干涉仪中的相位差和偏振态旋转。因此，在外磁场的作用下，输出光的强度被调制。此外，该调制器具有高消光比，并且可以很容易地集成到单模光纤系统中。调制器的性能不受环境温度从室温到 40°C 变化的影响。
