Highly birefringent dual-mode microstructured fiber with enhanced polarimetric strain sensitivity of the second order mode

Abstract

We present the results of theoretical and experimental characterization of a designed and manufactured dual-mode highly birefringent microstructured fiber. We also demonstrate the measured values of polarimetric temperature and strain sensitivity of both the fundamental and second order modes. As the mode field of the second order mode has a strong interaction with the fiber air holes, we observed a significant (over two orders of magnitude) increase in the polarimetric strain sensitivity of this mode in comparison to the fundamental mode. The enhanced strain sensitivity together with the low temperature sensitivity makes our fiber very attractive for application as extremely sensitive temperature independent strain transducers.

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].…”

“…However, there are still a few aspects that are severely problematic, such as bonding a glass optical fiber to sensing elements and the performance of optical fibers in high temperatures. Taking into consideration that metal diaphragms attached to optical fibers [11] may be used as transducers sensitive to changes of physical conditions (like stress, vibration, bending or pressure), the point about bonding the fibers mentioned above seems to be crucial. The second point becomes important when FOS have to operate at temperatures exceeding 500°C, because fibers degrade in such conditions.…”

Highly birefringence low loss index guiding photonic crystal fiber with differently sized air-holes in cladding

“…Optical fibers with high birefringence are of significant research interest because they are expected to find many applications in optical communication system, devices, and fiber sensors. Hi-Bi PCFs also offer promising applications in the construction of Photonic sensors, e.g., for measurement of temperature, pressure and strain [1,2,3] . Compared to the conventional polarized maintaining fiber (10 -4 ), PCF has the higher birefringence.…”

Supercontinuum generation in highly birefringent dual-mode fiber

“…2-3. The fiber was originally designed and manufactured for writing of Fibre Bragg Gratings (FBGs) and was used as a very sensitive strain sensor [10][11][12]. Here, we take advantage of dual-mode propagation which can be obtained by using the presented fiber to generate a broadband spectrum of light.…”