Evaluation of serial multiplexed photonic crystal fiber interferometric sensors

摘要

We report the multiplexing of photonic crystal fiber interferometric sensors that exhibit sinusoidal interference pattern.The frequency division multiplexing technique combined with a simple fast Fourier transform demodulation method was used to multiplex several devices in a single channel. To avoid crosstalk between the sensors, we calculate the optimal relationship between their periods. The technique is validated experimentally by multiplexing two-mode PCF interferometers but it can be adapted to multiplex any other optical fiber sensors that exhibit sinusoidal patterns. The technique and results reported here may allow the development of PCFI-based sensor networks.