Optical Fiber Pressure Sensors

Dear Colleagues, 

Optical Fiber Sensors are employed in different applications to measure several physical parameters, among them pressure. Indeed, pressure has been one of the first parameters historically addressed by researchers toward developing specific optical fiber sensors, either single-point and distributed. 

Single-point pressure sensors, such as those based on Fiber Bragg Gratings and Fabry-Perot cavities, have been extensively explored, and the literature counts many of them. Some of them have also reached the market. However, new solutions continue to be sought to ameliorate the performance by addressing long-standing challenges: pressure resolution; measurement range; repeatability/accuracy; robustness; packaging; the cost of interrogation instrumentation; cross-temperature sensitivity; drift; aging; hysteresis; nonlinearity; scalable manufacture; multiplexing; etc.

On the other side, pressure measurement using distributed optical fiber sensors has been less investigated, also because it is very challenging, especially when the expected pressure is relatively low. Today, this topic is attracting renewed interest, driven by new applications and the availability of high-resolution distributed sensing devices. Hitherto, the solutions that have been proposed include the distributed measurement of pressure-induced effects, as the strain and the birefringence in special fibers (high-birefringent and hollow fibers, Photonic Crystal fibers, etc.), compliant coated optical fibers, and engineered cables. 

This Special Issue will focus on the current state-of-the-art optical fiber pressure sensors, both single-point and distributed, covering all recent technological improvements from novel designs, special cables and fibers, new sensing schemes, and emerging applications. Original research papers, short communications, and review articles on this research topic are welcome. Papers focusing on demonstrations of novel sensors in real applications are also very welcome.

Dr. Luca Schenato

Guest Editor

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• pressure sensors
• optical fiber sensors
• distributed optical fiber sensors
• distributed optical fiber pressure sensors
• cable engineering
• special optical fiber