Sensors, Vol. 19, Pages 3868: A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry –Perot Sensors

Sensors, Vol. 19, Pages 3868: A Zero-Cross Detection Algorithm for Cavity-Length Interrogation of Fiber-Optic Fabry–Perot Sensors
Sensors doi: 10.3390/s19183868
Authors:
Ma
Song
Huang
Guo
Yuan
Chen
Zhang
Wang

A zero-cross detection algorithm was proposed for the cavity-length interrogation of fiber-optic Fabry–Perot (FP) sensors. The method can avoid the inaccuracy of peak determination in the conventional peak-to-peak method for the cavity-length interrogation of fiber-optic FP sensors caused by the slow variation of the spectral power density in peak neighboring regions. Both simulations and experiments were carried out to investigate the feasibility and performance of the zero-cross detection algorithm. Fiber-optic FP sensors with cavity lengths in the range of 150–1000 μm were successfully interrogated with a maximum error of 0.083 μm.

Source: Sensors - September 6, 2019 Category: Biotechnology Authors: Ma Song Huang Guo Yuan Chen Zhang Wang Tags: Article Source Type: research