Product Name: Polarization Maintaining Filter Coupler, Nx2 (1053nm) Description: These Polarization Maintaining Filter Couplers offer low insertion loss, high extinction ratio and excellent enviromental stability. Accurate coupling ratios are available with good uniformity in a wide wavelength range. It could be used to perform power splitting and mornitoring functions in CATV Systems, Fiberoptic Sensors, Local Area Network, and other kinds of optical communication systems.