Polarization Splitting of Photonic Crystal Fiber With Hybrid Guidance Mechanisms

A polarization splitter is proposed in a photonic crystal fiber with hybrid guidance mechanisms, i.e., total internal reflection and antiresonant reflection. High extinction ratios are achieved in a compact structure over a wavelength range. Moreover, the operating wavelength, splitting length, and bandwidth can be controlled accurately through control of refractive index of the fiber. Our research offers a deep physical insight into the novel light transmission phenomenon and is useful for future applications of the device.