Ampere force based photonic crystal fiber magnetic field sensor.

Highlights: [•] We report a novel Ampere force based photonic crystal fiber (PCF) magnetic field sensor. [•] The sensor does not have the intrinsic magnetic saturation and hysteresis drawbacks. [•] The sensor has advantages of simple fabrication, low cost, high sensitivity and good repeatability. [•] The qualitative theory is explained and the experiment results are analyzed well. [•] The sensor can even detect the geomagnetic field if we increase the applied electrical current to 1A. [Copyright &y& Elsevier]