The invention provides a distributed
fiber white-light interference
sensor array based on tunable Fabry-Perot
resonant cavity, which is composed of a duplex photoelectric device, a tunable Fabry-Perot
resonant cavity, a single-mode connection
fiber and a sensor, wherein the tunable Fabry-Perot
resonant cavity is composed of a scanning
prism, a self-focusing lens, and a single-mode
optical fiber with
partial reflection surface; the duplex photoelectric device is composed of a wide-
spectrum light source with a
common base, an emitter and a collector, a
photodetector, and a
beam splitter prism; the beam with a certain
spectral width is emitted by the
light source to the resonant cavity directly through the
beam splitter prism and is reflected multiple times by the left and the right surfaces of the resonant cavity to obtain a
signal light; and the
signal light outputted from the right cavity surface enters the sensor through the single-mode connection
fiber, reflected by the left and the right end faces of the sensor, returns along the original path to the resonant, and is outputted from the left cavity surface to the
photodetector. The distributed fiber white-light interference
sensor array has a common light path structure and has the advantages of good temperature stability, simplest
optical fiber path structure, low cost and high practicality.