Tunable Microring Filter Based On-chip Interrogator for Wavelength-modulated Optical Sensor

摘要

We demonstrated a novel approach for the interrogation of wavelength-modulated optical sensors.The interrogator is based on a tunable on-chip microring filter.By tuning the center wavelength of the microring filter,the center wavelength of the sensor can be readout by the corresponding tuning power.This approach has the potential of constructing a compact and cost-effective interrogator with good performance.