Measurements of polarimetric sensitivity to temperature in birefringent holey fibres

Abstract

We measured spectral dependence of the polarimetric sensitivity to temperature in three birefringent holey fibres with different geometries. Our results show that thermal properties of the birefringent photonic crystal fibres depend very much on the air hole arrangement. Using the procedure which allows us to determine the sign of temperature sensitivity, we demonstrated that one of the investigated fibres is insensitive to temperature at a certain wavelength. We also measured the temperature sensitivities for the fibres with and without polymer coating and showed that the coating changes significantly the fibre response to temperature. Furthermore, we demonstrated experimentally that the spectral dependence of the polarimetric sensitivity to temperature in birefringent holey fibres obeys a scaling law.

Highly Birefringent Four-Hole Fiber for Pressure Sensing

“…Regarding to the fabrication feasibility of the FHF with different size air holes in the cross-section, it is with high possibility to fabricate the FHF using the current fabrication techniques available when different air pressure in the large air hole and small air hole is well controlled and the silica tube for two kinds of air holes are well fixed during the fiber drawing processing. Please note that there are several MSFs with different size air holes in the cross-section have been fabricated [16][17][18][19].…”

“…Side-hole fibers were proposed and demonstrated for pressure sensing [8][9][10][11][12]. More recently, several microstructured fibers (MSFs) (i.e., photonic crystal fibers (PCFs)) were also proposed for pressure sensing [13][14][15][16][17][18][19][20][21][22]. Thanks to the design flexibility of the cross-section, MSFs have achieved excellent properties in birefringence [23][24][25][26][27][28][29], dispersion [30][31][32][33][34], single polarization single mode [35][36][37], nonlinearity [38], and effective mode area [39][40][41] over the past several years.…”

Fiber Optic-Based Pressure Sensing Surface for Skin Health Management in Prosthetic and Rehabilitation Interventions

“…Dedicated microstructured optical fibers (MOF) provide a solution to those difficulties. The experimental results published so far indicate that the sensitivity to temperature in highly birefringent MOFs strongly depends on the fiber geometry and can be up to 3 orders of magnitudes lower than in standard elliptical core fibers [40]- [44]. However, the sensitivities obtained with these MOF are still not sufficient in view of the required pressure measurement resolutions imposed by HMI demanding applications in medical mattresses and prosthetic sockets.…”

Electrolytic Joints Between Metal Surfaces and Metal-Coated Fibers for Application in High Temperature Optical Fiber Sensors

“…Furthermore, with the development of microstructured fiber technology, it is possible to customize the fiber's properties (e.g. chromatic dispersion [6], [7], sensitivity to pressure [8], strain [9], temperature [10], birefringence [11]), by modifying the fibers internal structural parameters. In addition to a wide variety of optical fibers, sensors that use various measurement methods can also be produced [12], [13].…”