1x2/2x2 polarization maintaining fiber coupler (400-2000nm)
These 2x2 polarization maintaining (PM) fiber couplers are designed for 460-2200 nm, with selectable coupling ratios of 50:50, 75:25, 90:10, or 99:1. The 2x2 couplers are bidirectional and can be used for separating and mixing signals (see 2x2 coupling example label). Polarization maintaining couplers are made using panda shaped polarization maintaining fibers, so they can maintain a high polarization extinction ratio (PER) when light is emitted along the slow axis of the fiber. As shown in the figure on the right, the stress rod is parallel to the fiber core and applies stress, generating birefringence in the fiber core to achieve polarization maintenance. Typical applications of polarization maintaining couplers include optical sensors, optical amplifiers, and fiber optic gyroscopes. The default alignment method for Xiaoxiao Photon's optical polarization maintaining components is slow axis alignment. Xiaoxiao Photon's polarization maintaining coupler has a high extinction ratio and can operate over a wide temperature range of -40 ° C to 85 ° C. Note that PER will vary with temperature; For details, please refer to the temperature cycling test section in the polarization extinction ratio measurement label. They have Max with connectors or bare fibers The power is 1 W, and during welding it is 5 W (please refer to the damage threshold label for details). These couplers have undergone extensive testing and PER validation