Multiphysics analysis of an all-photonic crystal fiber device

A multiphysics analysis of an all-fiber device based on photonic crystal fiber is reported. The device is a solid-core high-birefringent photonic crystal fiber with two integrated electrodes at the cladding region. A finite element code was used to perform an electro-thermo-mechanical-opto coupled analysis. The device operates applying an electrical current on the integrated electrodes that causes heating by Joule effect and, consequently, its thermal expansion which squeezes the fiber microstructure. The results demonstrate the possibility of actively tuning the modal birefringence with electrical current.