Polarization-Maintaining Photonic Crystal Fiber

Polarization-maintaining photonic crystal fiber can be used in fiber optic gyroscopes and polarization-related devices. It features radiation resistance, high birefringence, and excellent temperature stability. This fiber has a large refractive index step between air and glass, which produces strong birefringence and results in a short beat length. Compared with conventional polarization-maintaining fibers, polarization-maintaining photonic crystal fiber can reduce coupling between different polarization states caused by bending and maintain a high extinction ratio.