Spun Optical Microfiber

The first report of spun optical microfiber (OM) is presented, with details on its fabrication method and a demonstration of its important role in making practical Faraday-based microcoil current sensors. These sensors have shown potential for significantly higher bandwidth and compactness compared to conventional fiber-optic current sensors. We demonstrate that spun OM exhibits superior resistance to bend- and packaging-induced linear birefringence, which can improve the responsivity and reproducibility of the sensor head.