Seven-core photonic liquid crystal fibers for simultaneous mode shaping and temperature sensing

Abstract

Through doping liquid crystals into the core region, we propose a kind of seven-core photonic crystal fiber (PCF) which can achieve mode shaping and temperature sensing simultaneously in the communication window of 1.1-1.7 μm. To the best of our knowledge, this is the first time that the function of seven-core PCFs as temperature sensors is investigated. By using the full vectorial finite element method, the characteristics of the fiber with the temperature, such as the effective mode area, the waveguide dispersion, and the confinement loss, are analyzed. This kind of PCF can be competitive in providing temperature sensing in multi-core PCF lasers.

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

“…Another group of multi-core MOFs/PCFs differs from the first one by improved refractive index of cores in comparison with pure silica. So, for example, there are known PCFs with cores, formed by capillaries, filled by liquid crystals, which are declared as alternative solution for temperature sensing [32][33][34] , or by ferrofluids for endoscopic applications 35 . More "conventional" MOF configuration is based on stacks with inclusion of doped silica rods.…”