A Type of Lyot Fiber Depolarizer Based on Photonic Crystal Fiber

In this letter, we utilize the beam-propagation method to design and simulate a high-birefringence square-lattice polarization microstructure to realize 45-degree rotation when light passes through, and confirm its arrangement and parameters. Optical parameters in allusion to polarization controller of photonic crystal fiber such as birefringence characteristics have been studied, and optical simulation of the polarization microstructure of the depolarized Lyot photonic crystal has been performed.