Topographically anisotropic integrated photonics is proposed for extremely broadband polarization-selective devices. Polarization beam-splitting with an unprecedented 116 THz of bandwidth (0. 52 octaves), insertion losses <1. 2 dB and extinction ratio >16 dB is. Fiber optic beam splitters are used to divide light from one fiber into two or more fibers. Both 1XN and 2XN. The Keysight Technology, Inc. 100 individual layers with a reflection in the range of 750 - 850 nm and a transparency in the range of 450 - 745 nm. Unwanted interference effects are reduced due to a slightly wedged substrate, and an AR.
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