Sensitivity enhancement of an all-solid FPE sensor via a programmable Vernier effect
Yang Cheung,
Zhenguo Jing,
Pengdong Cao
et al.
Abstract:All-solid, open-cavity fiber optic Fabry–Perot etalon (FPE) sensors possess a wide static pressure detection range, yet their low sensitivity significantly restricts their application. This study proposes a programmable Vernier effect to improve the gas pressure sensitivity of FPE sensors substantially. By effectively modulating the emission spectrum of a widely tunable laser using a variable optical attenuator (VOA), the emission spectrum at different modulation lengths is expected to produce an optical beati… Show more
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