Numerical and Experimental Studies for a High Pressure Photonic Crystal Fiber Based Sensor

Abstract

Abstract. We report a study of using photonic crystal fibers (PCFs) for high pressure applications. An opto-mechanical analysis was realized in regular PCFs and suspended-core microstructured optical fibers for different fiber geometrical parameters. It was found that the pressure sensitivity is highly dependent on the fiber structure. It was also experimentally shown that even small core PCFs with high air filling fraction can deal with pressures as high as 500 bar (7350 psi) without any noticeable problem.

All-fiber devices based on photonic crystal fibers with integrated electrodes

“…4(b)). Microstructured fibers have, however, potential room for improving this figure by optimization of the cladding geometrical parameters and, consequently, of their mechanical properties, as previously suggested [19]. As the device operation relies on thermal effects, its response time can be rather slow, as it is in our case, where both the on/off states are related to heat dissipation.…”

“…The modeling of the detailed change of the cladding geometry and fiber birefringence with the electrode expansion is being carried out and will be published in a future work. It should be pointed out, however, that the presence of the cladding air holes not only allows a wider control of the fiber optical properties but also of its mechanical ones [19].…”