Remote resilient FBG multiplexing network controlled by a powered by light fiber optic switch

Abstract

In this work, a remote powered by light fiber optic switch is experimentally demonstrated. This fiber optic switch is powered by a photovoltaic power converter illuminated by a Raman laser working at distances up to 50 km. This switch is used to develop a remote resilient FBG multiplexing network interrogated by a commercial FBG interrogator. In the proposed set-up the switch selects the branch of the FBG network 50 km away in order to enable a two-way interrogation path for each sensor to prevent connection failures.

Remote fiber optic switch powered by light for robust interrogation of fiber Bragg grating sensor networks

“…The measured switching time was ∼2 ms. This result is in good agreement with the results presented in [11]. The design of the electronics fixes an input voltage threshold.…”

Fiber optic sensor networks

“…Recently a remote powered by light fiber optic switch for resilient interrogation of FBG sensors arrays was experimentally demonstrated. This fiber optic switch was powered by a photovoltaic power converter illuminated by a Raman laser working at distances up to 50 km [46].…”