Key to their performance is the "PANDA" (Polarization-maintaining AND Absorption-reducing) or "Bow-Tie" fiber structures. Polarization Maintaining Fiber Optic Patchcords are available with FC/PC or FC/APC terminated connectors. Hybrid terminated connectors enable users to adapt FC/PC or FC/APC patchcords for compatibility with existing fiber assemblies. The PM axis orientation is maintained by using male connectors with a positioning key and a bulkhead female receptacle with a tightly toleranced keyway, ensuring good repeatability in extinction. Patch cord polarity defines the directional optical path between two transceivers, ensuring that the transmit (Tx) signal from one device reaches the receive (Rx) port of the other. We offer a wide range of connector types, including FC, SC, LC, MTP, and E2000, as well as AR-coated variants. All patch cords are produced and individually. There are four different 12/24 Fibers MTP/MPO cassette modules: Type A, AF(Pair Flipped), B1 and B2. Array polarity systems another device.