Fiber optic sensors: a technological leap thanks to quantum photon
Researchers at FEMTO-ST have extended the range of fiber-optic temperature sensors to 150 kilometers, using photonic detection technology derived from quantum physics.
Fiber Optic Quantum Sensing
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Optical fiber quantum sensing, integrating optical fiber sensing with quantum technologies, enhances measurement precision and sensitivity from multiple perspectives, such as exploring high-sensitivity optical fiber sensing installations and generating high-quality optical fiber. Fiber optic distributed sensors can be used for monitoring temperature distributions along power cables to optimise current-carrying capacity, in subsea oil pipelines for flow. The development of integrated photonic systems, both on-chip and fiber-based, has transformed quantum photonics by replacing bulky, fragile free-space optical setups with compact, efficient, and robust circuits. Photonic platforms incorporating fiber-connected sources of correlated and entangled. However, conventional OTDRs lack the spatial resolution required for the most demanding industrial applications. Quantum sensing has performance advantages that far exceed classical sensing, where sensing with photons is one of the most useful branches, and fiberization is a significant development approach to achieve a broader range of applications.
