The polarization maintaining optical circulator (high extinction ratio) is a passive component based on the Faraday effect, transmitting light signals from one port to the next sequential port with low loss, but at the same time blocking any light transmission to the previous port. Polarization Maintaining Optical Circulator qualifies as one of the most important building blocks, which allows engineers to implement the most advanced optical routing while maintaining the polarization of the light signals. OZ Optics miniature inline circulators are ideal for OEM applications. They are available with either singlemode or polarization maintaining fiber. Let's explore this essential component that keeps our fiber optic networks running smoothly.